StatA

SUBCHAPTER D—TANK VESSELS
PART 30—GENERAL PROVISIONS
NOTE: Parts 151 through 157 in 33 CFR subchapter O contain additional design, equipment, and operations requirements relating
to pollution prevention for vessels that carry
oil.

Subpart 30.01—Administration
Sec.
30.01–1 Purpose of regulations.
30.01–2 OMB control numbers assigned pursuant to the Paperwork Reduction Act.
30.01–3 Incorporation by reference.
30.01–5 Application of regulations—TB/ALL.
30.01–6 Application to vessels on an international voyage.
30.01–7 Ocean or unlimited coastwise vessels
on inland and Great Lakes Routes—TB/
OC.
30.01–10 Application of regulations governing alterations or repairs—TB/ALL.
30.01–15 Effective date of regulations—TB/
ALL.

Subpart 30.10—Definitions
30.10–1 Definition of terms—TB/ALL.
30.10–2 Accommodation space—TB/ALL.
30.10–2a Anniversary date—TB/ALL.
30.10–3 Approved—TB/ALL.
30.10–5 Cargo—TB/ALL.
30.10–5a Cargo area—TB/ALL.
30.10–5b Cargo control station—TB/ALL.
30.10–6 Cargo handling room—TB/ALL.
30.10–6a Category A machinery space—TB/
ALL.
30.10–7 Certificated—TB/ALL.
30.10–9 Classification
requirements—TB/
ALL.
30.10–11 Coastwise—TB/C.
30.10–13 Cofferdam—TB/ALL.
30.10–14 Combination carrier—TB/ALL.
30.10–15 Combustible liquid—TB/ALL.
30.10–17 Commandant—TB/ALL.
30.10–19 Coast Guard District Commander—
TB/ALL.
30.10–19a Control space—TB/ALL.
30.10–20 Deadweight or DWT—TB/ALL.
30.10–21 Flammable or inflammable—TB/
ALL.
30.10–22 Flammable liquid—TB/ALL.
30.10–23 Flame arrester—TB/ALL.
30.10–25 Flame screen—TB/ALL.
30.10–27 Flashpoint—TB/ALL.
30.10–29 Gas free—TB/ALL.
30.10–31 General rules and regulations—TB/
ALL.
30.10–33 Great Lakes—TB/L.
30.10–35 Headquarters—TB/ALL.
30.10–37 Keel laying date—TB/ALL.
30.10–38 Lightweight—TB/ALL.

30.10–39 Liquefied flammable gas—TB/ALL.
30.10–41 Lakes, bays, and sounds—TB/B.
30.10–42 Machinery space—TB/ALL.
30.10–43 Marine inspector or inspector—TB/
ALL.
30.10–45 Ocean—TB/O.
30.10–47 Officer in Charge, Marine Inspection—TB/ALL.
30.10–48 Oil fuel—TB/ALL.
30.10–48a Oil fuel unit—TB/ALL.
30.10–49 Permit—TB/ALL.
30.10–50 Pilot boarding equipment and point
of access.
30.10–55 Pressure vacuum relief valve—TB/
ALL.
30.10–57 Recognized classification society—
TB/ALL.
30.10–59 Reid vapor pressure—TB/ALL.
30.10–61 Rivers—TB/R.
30.10–62 Self-propelled
tank
vessel—TB/
ALL.
30.10–62a Service spaces—TB/ALL.
30.10–63 Spark arrester—TB/ALL.
30.10–65 Tank barge—B/ALL.
30.10–67 Tankship—T/ALL.
30.10–69 Tank vessel—TB/ALL.
30.10–71 Tankerman—TB/ALL.

Subpart 30.15—Equivalents
30.15–1 Conditions under which equivalents
may be used—TB/ALL.

Subpart 30.25—Commodities Regulated
30.25–1 Cargoes carried in vessels certificated under the rules of this subchapter.
30.25–3 Benzene.

Subpart 30.30—Interim Procedures for Evaluating Vessel Personnel Licensing and
Certification Programs of Foreign
Countries
30.30–1
30.30–3
30.30–5
30.30–7
30.30–9
30.30–11

Scope and purpose.
Evaluation materials.
Submission of evaluation materials.
Availability of materials.
Evaluation.
Determinations.

AUTHORITY: 46 U.S.C. 2103, 3306, 3703; Pub.
L. 103–206, 107 Stat. 2439; 49 U.S.C. 5103, 5106;
Department of Homeland Security Delegation No. 0170.1; Section 30.01–2 also issued
under the authority of 44 U.S.C. 3507; Section
30.01–05 also issued under the authority of
Sec. 4109, Pub. L. 101–380, 104 Stat. 515.
EFFECTIVE DATE NOTE: By USCG–2012–0919,
79 FR 53631, Sept. 10, 2014, the authority citation to part 30 was revised, effective Oct. 10,
2014. For the convenience of the user, the revised text is set forth as follows:

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§ 30.01–1

46 CFR Ch. I (10–1–14 Edition)

AUTHORITY: 46 U.S.C. 2103, 3306, 3703; Department of Homeland Security Delegation
No. 0170.1(II)(92)(a), (92)(b).
SOURCE: CGFR 65–50, 30 FR 16657, Dec. 30,
1965, unless otherwise noted.

Subpart 30.01—Administration
§ 30.01–1 Purpose of regulations.
(a) The rules and regulations in this
subchapter are prescribed for all tank
vessels in accordance with the intent of
the various statutes administered by
the Coast Guard and to provide for a
correct and uniform administration of
the vessel inspection requirements applicable to tank vessels.
[CGFR 68–32, 33 FR 5712, Apr. 12, 1968]

§ 30.01–2 OMB control numbers assigned pursuant to the Paperwork
Reduction Act.
(a) Purpose. This section collects and
displays the control numbers assigned
to information collection and recordkeeping requirements in this subchapter by the Office of Management
and Budget (OMB) pursuant to the Paperwork Reduction Act of 1980 (44
U.S.C. 3501 et seq.). The Coast Guard intends that this section comply with the
requirements of 44 U.S.C. 3507(f) which
requires that agencies display a current control number assigned by the
Director of the OMB for each approved
agency information collection requirement.
(b) Display.
46 CFR part or section where identified or described

Current
OMB control
No.

§ 31.10–5(a) .......................................................
§ 31.10–21 .........................................................
§ 31.10–22 .........................................................
§ 31.10–32 .........................................................
§ 31.10–33 .........................................................
§ 31.37–15 .........................................................
§ 31.40–35 .........................................................
§ 35.20–7 ...........................................................
§ 35.35–30 .........................................................
§ 39.10–13 .........................................................

1625–0038
1625–0032
1625–0032
1625–0038
1625–0038
1625–0038
1625–0038
1625–0064
1625–0039
1625–0038

[49 FR 38120, Sept. 27, 1984, as amended by
CGD 89–037, 57 FR 41821, Sept. 11, 1992; USCG2004–18884, 69 FR 58345, Sept. 30, 2004]

§ 30.01–3 Incorporation by reference.
(a) Certain material is incorporated
by reference into this part with the approval of the Director of the Federal

Register under 5 U.S.C. 552(a) and 1
CFR part 51. To enforce any edition
other than that specified in this section, the Coast Guard must publish notice of change in the FEDERAL REGISTER and the material must be available to the public. All approved material is available for inspection at the
National Archives and Records Administration (NARA). For information on
the availability of this material at
NARA, call 202–741–6030 or go to http://
www.archives.gov/federallregister/
codeloflfederallregulations/
ibrllocations.html. Also, it is available
for inspection at the Commandant (CG–
ENG), Attn: Office of Design and Engineering Systems, U.S. Coast Guard
Stop 7509, 2703 Martin Luther King Jr.
Avenue SE., Washington, DC 20593–7509;
telephone 202–372–1405, and is available
from the sources listed below.
(b) American Society for Testing and
Materials (ASTM), 100 Barr Harbor
Drive, West Conshohocken, PA 19428–
2959, telephone 610–832–9585, http://
www.astm.org.
(1) ASTM D 323–94, Standard Test
Method for Vapor Pressure of Petroleum Products (Reid Method), incorporation by reference approved for
§§ 30.10–22; 30.10–59.
(2) [Reserved]
[USCG–2009–0702, 74 FR 49226, Sept. 25, 2009,
as amended by USCG–2013–0671, 78 FR 60146,
Sept. 30, 2013]

§ 30.01–5 Application of regulations—
TB/ALL.
NOTE: 33 CFR subchapter O (parts 151
through 157) contains additional design,
equipment, and operations requirements relating to pollution prevention for vessels
that carry oil.

(a) The regulations in this subchapter contain requirements for materials, design, construction, inspection, manning, and operation of tank
vessels, including handling and stowage of cargo and duties of officers and
crew. However, vessels certificated as
passenger, cargo, and miscellaneous
vessels, whose principal purpose or use
is not the carriage of flammable or
combustible liquid cargo in bulk, may
be granted a permit to carry limited
quantities of flammable or combustible
liquid cargo in bulk in the grades indicated:

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Coast Guard, DHS

§ 30.01–5

(1) Passenger vessels:
(i) Grade E in an integral tank; and
(ii) Grade E in a portable tank, including a marine portable tank (MPT),
in accordance with subpart 98.30 or
98.33 of this chapter.
(2) Cargo vessels:
(i) Grades D and E in an integral
tank; and
(ii) Grades D and E and certain specifically named Grade C in a portable
tank, including an MPT, in accordance
with subpart 98.30 or 98.33 of this chapter.
(3) Miscellaneous vessels, such as
cable, salvage, pile-driving and oildrilling-rig vessels:
(i) Grades B, C, D, and E in a fixed
independent or integral tank authorized by the Commandant; and
(ii) Grades D and E and certain specifically named Grade C in a portable
tank, including an MPT, in accordance
with subpart 98.30 or 98.33 of this chapter.
(b) [Reserved]
(c) The vessels and services to which
each regulation applies are indicated
by letters in the heading of the section
or paragraph. The first letter or two
letters indicate the type of vessel and
the letter or letters following the oblique line indicate the waters in which
such vessels may operate. These letters
are described as follows:
(1) ‘‘T’’ signifies a tankship.
(2) ‘‘B’’ signifies a tank barge when it
precedes an oblique line; or it signifies
service on bays, sounds, and lakes
other than the Great Lakes when it follows an oblique line.
(3) ‘‘ALL’’ signifies service on all waters.
(4) ‘‘O’’ signifies service on ocean waters.
(5) ‘‘C’’ signifies services on coastwise
waters.
(6) ‘‘L’’ signifies service on Great
Lakes waters.
(7) ‘‘R’’ signifies service on river waters.
(d) This subchapter is applicable to
all U.S.-flag vessels indicated in column 2 of table 2.01–7(a), except as follows:
(1) Any vessel operating exclusively
on inland waters which are not navigable waters of the United States.

(2) Any vessel while laid up and dismantled and out of commission.
(3) With the exception of vessels of
the U.S. Maritime Administration, any
vessel with title vested in the United
States and which is used for public purposes.
(e) This subchapter shall be applicable to all foreign flag vessels carrying
combustible or flammable liquid cargo
in bulk while in the navigable waters
over which the United States has jurisdiction, except that:
(1) A vessel of a foreign nation signatory to the International Convention
for Safety of Life at Sea, 1974, which
has on board a current valid Safety
Equipment Certificate, or a vessel of a
foreign nation having inspection laws
approximating those of the United
States, together with reciprocal inspection arrangements with the United
States and which has on board a current valid certificate of inspection
issued by its government under such
arrangements, in either case, shall be
subject only to the requirements of
§ 35.01–1 and the safety and cargo handling requirements in subparts 35.30
and 35.35 of this subchapter. In addition, these vessels shall report marine
casualties occurring while they are in
the navigable waters of the United
States as required by subpart 35.15.
(2) A foreign flag vessel, except a public vessel, which operates on or enters
the navigable waters of the United
States, or which transfers oil in any
port or place subject to the jurisdiction
of the United States, must comply with
the provisions of § 31.10–21a and subparts 32.53, 32.59 and 34.05 of this chapter, as applicable.
(f) Notwithstanding the exceptions
previously noted in paragraph (e) of
this section, foreign vessels of novel design or construction, or whose operation involves potential unusual risks,
shall be subject to inspection to the extent necessary to safeguard life and
property in United States ports, as further provided by § 2.01–13 of subchapter
A (Procedures applicable to the Public)
of this chapter.
(g) Manned barges carrying any of
the cargoes listed in table 30.25–1 will

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§ 30.01–6

46 CFR Ch. I (10–1–14 Edition)

be considered individually by the Commandant and may be required to comply with the requirements of subchapter O of this chapter, as applicable, as well as the requirements of this
subchapter.
(h) Subpart 30.30 contains procedures
for evaluating vessel personnel licensing and certification programs of foreign countries which license or certificate personnel serving on tank vessels
that enter or operate in U.S. navigable
waters and ports.
EDITORIAL NOTE: For FEDERAL REGISTER citations affecting § 30.01–5, see the List of CFR
Sections Affected, which appears in the
Finding Aids section of the printed volume
and at www.fdsys.gov.
EFFECTIVE DATE NOTE: By USCG–2012–0919,
79 FR 53631, Sept. 10, 2014, § 30.01–5 was
amended by removing the phrase ‘‘carrying
passengers or passengers–for–hire’’ from
Table 30.01–5(d), column 5, rows 3 and 4, and
removing the word ‘‘None’’ from column 5,
row 6, adding in its place the phrase ‘‘All
vessels not covered by columns 2, 3, 4, and 6’’,
effective Oct. 10, 2014; however, Table 30.01–
5(d) was removed by USCG–2014–0688, 79 FR
58279, Sept. 29, 2014.

§ 30.01–6 Application to vessels on an
international voyage.
(a) Except as provided in paragraphs
(b), (c), and (d) of this section, the regulations in this subchapter that apply
to a vessel on an international voyage
apply to a vessel that:
(1) Is mechanically propelled and of
at least 500 gross tons; and
(2) Is engaged on a voyage:
(i) From a country to which the
International Convention for Safety of
Life at Sea, 1974 (SOLAS 74) applies, to
a port outside that country or the reverse;
(ii) From any territory, including the
Commonwealth of Puerto Rico, all possessions of the United States, and all
lands held by the United States under
a protectorate or mandate, whose
international relations are the responsibility of a contracting SOLAS 74 government, or which is administered by
the United Nations, to a port outside
that territory or the reverse; or
(iii) Between the contiguous states of
the United States and the states of Hawaii or Alaska or between the states of
Hawaii and Alaska.

(b) The regulations that apply to a
vessel on an international voyage in this
subchapter do not apply to ships engaged on a voyage solely on the Great
Lakes and the St. Lawrence River as
far east as a straight line drawn from
Cap des Rosiers to West Point, Anticosti Island and, on the north side of
Anticosti Island, the 63rd Meridian;
(c) The Commandant or his authorized representative may exempt any
vessel on an international voyage from
the requirements of this subchapter if
the vessel:
(1) Makes a single international voyage in exceptional circumstances; and
(2) Meets safety requirements prescribed for the voyage by the Commandant.
(d) The Commandant or his authorized representative may exempt any
vessel from the construction requirements of this subchapter if the vessel
does not proceed more than 20 nautical
miles from the nearest land in the
course of its voyage.
[CGD 72–131R, 38 FR 29320, Oct. 24, 1973, as
amended by CGD 80–123, 45 FR 64586, Sept. 30,
1980; CGD 90–008, 55 FR 30660, July 26, 1990;
CGD 84–069, 61 FR 25286, May 20, 1996; USCG2001–10224, 66 FR 48619, Sept. 21, 2001]

§ 30.01–7 Ocean or unlimited coastwise
vessels on inland and Great Lakes
Routes—TB/OC.
(a) Vessels inspected and certificated
for ocean or unlimited coastwise routes
shall be considered suitable for navigation insofar as the provisions of this
subchapter are concerned on any inland route, including the Great Lakes.
§ 30.01–10 Application of regulations
governing alterations or repairs—
TB/ALL.
When major alterations or major repairs of tank vessels become necessary
the work shall be done under the direction of the Officer in Charge, Marine
Inspection, and shall be in accordance
with the regulations in effect for new
construction insofar as possible. When
minor alterations or minor repairs of
tank vessels become necessary such
work shall be under the direction of
the Officer in Charge, Marine Inspection, and shall be in accordance with
the regulations in effect at the time
the vessel was contracted for or built,

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Coast Guard, DHS

§ 30.10–6a

or in accordance with the regulations
in effect for new construction insofar
as possible.
§ 30.01–15 Effective
tions—TB/ALL.

date

of

regula-

[CGFR 65–50, 30 FR 16657, Dec. 30, 1997, as
amended by CGD 95–028, 62 FR 51197, Sept. 30,
1997]

Subpart 30.10—Definitions
Definition of terms—TB/ALL.

§ 30.10–2 Accommodation
ALL.

space—TB/

The term accommodation space means
any public space such as a hall, dining
room, mess room, lounge, corridor, lavatory, cabin, office, hospital, cinema,
game and hobby room, pantry that
contains no cooking appliances, and a
similar space open to the passengers
and crew.
[CGD 74–127, 41 FR 3842, Jan. 26, 1976]

Anniversary date—TB/ALL.

The term anniversary date means the
day and the month of each year, which
corresponds to the date of expiration of
the Certificate of Inspection.
[USCG-1999–4976, 65 FR 6499, Feb. 9, 2000]

§ 30.10–3

Cargo area—TB/ALL.

The term cargo area means that part
of a vessel that includes the cargo
tanks and other tanks into which cargo
or cargo vapors are intentionally introduced, holds containing these tanks,
all intervening space within, between,
below, or outboard of these tanks or
holds, and the deck area over the
length and beam of the vessel above
these tanks, holds, or spaces.
[CGD 74–127, 41 FR 3842, Jan. 26, 1976]

§ 30.10–5b
ALL.

Cargo control station—TB/

The term cargo control station means
a location that is manned during cargo
transfer operations for the purpose of
directing or controlling the loading or
unloading of cargo.
[CGD 74–127, 41 FR 3842, Jan. 26, 1976]

Certain terms used in the regulations
in this subchapter are defined in this
subpart.

§ 30.10–2a

Cargo—TB/ALL.

The term cargo means combustible
liquid, flammable liquid, or liquefied
flammable gas unless otherwise stated.
§ 30.10–5a

The regulations in this subchapter
are not retroactive in effect unless specifically made so at the time the regulations are issued. Changes in specification requirements of articles of
equipment, or materials used in construction of tank vessels, shall not
apply to such items which have been
passed as satisfactory until replacement shall become necessary, unless a
specific finding is made that such
equipment or material used is unsafe
or hazardous and has to be removed
from tank vessels.

§ 30.10–1

§ 30.10–5

Approved—TB/ALL.

The term approved means approved
by the Commandant unless otherwise
stated.

§ 30.10–6 Cargo
ALL.

handling

The term cargo handling room means
any enclosed space where cargo is
pumped, compressed, or processed. Examples of cargo handling rooms are
pump rooms, compressor rooms, and
cargo valve rooms.
[CGFR 68–65, 33 FR 19983, Dec. 28, 1968]

§ 30.10–6a Category
space—TB/ALL.

A

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machinery

The term Category A machinery space
means any space and trunks and ducts
to such a space that contains:
(a) Internal combustion machinery
used for main propulsion;
(b) Internal combustion machinery
used for purposes other than main propulsion where the total aggregate
power is at least 500 brake horsepower;
(c) Internal combustion machinery
that uses a fuel that has a flash point
of less than 43.3°C (110°F); or
(d) One or more oil fired boilers or oil
fuel units.
[CGD 74–127, 41 FR 3842, Jan. 26, 1976]

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§ 30.10–7

46 CFR Ch. I (10–1–14 Edition)

§ 30.10–7 Certificated—TB/ALL.
The term certificated when applied to
tank vessels refers to a vessel covered
by a certificate of inspection issued by
the Coast Guard; when applied to men
employed on tank vessels, the term refers to a certificate of ability issued by
the Coast Guard.
§ 30.10–9 Classification requirements—
TB/ALL.
The term classification requirements
means applicable rules and supplementary requirements of the American
Bureau of Shipping, or other recognized classification society.
§ 30.10–11 Coastwise—TB/C.
Under this designation shall be included all tank vessels normally navigating the waters of any ocean or the
Gulf of Mexico 20 nautical miles or less
offshore.
§ 30.10–13 Cofferdam—TB/ALL.
The term cofferdam means a void or
empty space separating two or more
compartments for the purpose of isolation or to prevent the contents of one
compartment from entering another in
the event of the failure of the walls of
one to retain their tightness.
§ 30.10–14 Combination
carrier—TB/
ALL.
The term combination carrier means a
tank vessel designed to carry alternatively liquid and solid cargoes in
bulk.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.10–15 Combustible
liquid—TB/
ALL.
The term combustible liquid means
any liquid having a flashpoint above 80
°F. (as determined from an open-cup
tester, as used for test of burning oils).
In the regulations of this subchapter,
combustible liquids are referred to by
grades, as follows:
(a) Grade D. Any combustible liquid
having a flashpoint below 150 °F. and
above 80 °F.
(b) Grade E. Any combustible liquid
having a flashpoint of 150 °F. or above.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGD 73–96, 42 FR 49023, Sept. 26,
1977]

§ 30.10–17

Commandant—TB/ALL.

The term Commandant means the
Commandant of the Coast Guard.
§ 30.10–19 Coast Guard District Commander—TB/ALL.
The term Coast Guard District Commander means an officer of the Coast
Guard designated as such by the Commandant to command all Coast Guard
activities within his district which include the enforcement and administration of Subtitle II, Title 46, U.S. Code,
Title 46 and Title 33, U.S. Code, and
regulations issued under these statutes.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGD 95–028, 62 FR 51197, Sept. 30,
1997]

§ 30.10–19a

Control space—TB/ALL.

The term control space means an enclosed space in which is located a ship’s
radio, main navigating equipment, or
emergency source of power or in which
is located centralized fire recording or
fire control equipment, but not including firefighting apparatus that must be
located in the cargo area or individual
pieces of firefighting equipment.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.10–20
ALL.

Deadweight

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DWT—TB/

The term deadweight or DWT means
the difference in metric tons between
the lightweight displacement and the
total displacement of a vessel measured in water of specific gravity 1.025
at the load waterline corresponding to
the summer freeboard assigned according to 46 CFR, subchapter E.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.10–21 Flammable or inflammable—
TB/ALL.
The words flammable and inflammable
are interchangeable or synonymous
terms for the purpose of the regulations in this subchapter.
§ 30.10–22

Flammable liquid—TB/ALL.

The term flammable liquid means any
liquid which gives off flammable vapors (as determined by flashpoint from
an open-cup tester, as used for test of
burning oils) at or below a temperature

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Coast Guard, DHS

§ 30.10–39

of 80 °F. Flammable liquids are referred
to by grades as follows:
(a) Grade A. Any flammable liquid
having a Reid 1 vapor pressure of 14
pounds or more.
(b) Grade B. Any flammable liquid
having a Reid 1 vapor pressure under 14
pounds and over 81⁄2 pounds.
(c) Grade C. Any flammable liquid
having a Reid 1 vapor pressure of 81⁄2
pounds or less and a flashpoint of 80 °F.
or below.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGD 73–96, 42 FR 49023, Sept. 26,
1977; USCG-2000–7790, 65 FR 58458, Sept. 29,
2000]

§ 30.10–23

Flame arrester—TB/ALL.

The term flame arrester means any device or assembly of a cellular, tubular,
pressure, or other type used for preventing the passage of flames into enclosed spaces.
§ 30.10–25

Flame screen—TB/ALL.

The term flame screen means a fitted
single screen of corrosion-resistant
wire of at least 30 by 30 mesh, or two
fitted screens, both of corrosion-resistant wire, of at least 20 by 20 mesh,
spaced not less than 1⁄2 inch or more
than 11⁄2 inches apart.
§ 30.10–27

Flashpoint—TB/ALL.

The term flashpoint indicates the
temperature in degrees Fahrenheit at
which a liquid gives off a flammable
vapor when heated in an open-cup tester. For the purpose of the regulations
in this subchapter, flashpoints determined by other testing methods will be
equivalent to those determined with an
open-cup tester, as follows:
TABLE 30.10–27—EQUIVALENT FLASHPOINTS
[In degrees Fahrenheit]

Open-cup tester

Tag closed-cup
tester (A.S.T.M.)

Pensky-Martens
closed tester
(A.S.T.M.)

80 ...........................
150 .........................

75
..............................

..............................
140

[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by USCG–2014–0688, 79 FR 58279,
Sept. 29, 2014]

§ 30.10–29 Gas free—TB/ALL.
The term gas free means free from
dangerous concentrations of flammable
or toxic gases.
§ 30.10–31 General rules and regulations—TB/ALL.
The term general rules and regulations
means the requirements contained in
this chapter.
§ 30.10–33 Great Lakes—TB/L.
Under this designation shall be included all tank vessels navigating the
Great Lakes.
§ 30.10–35 Headquarters—TB/ALL.
The term Headquarters means the
Commandant (CG–CVC), Attn: Office of
Commercial Vessel Compliance, U.S.
Coast Guard Stop 7501, 2703 Martin Luther King Jr. Avenue SE., Washington,
DC 20593–7501.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGFR 68–32, 33 FR 5712, Apr. 12,
1968; CGD 88–070, 53 FR 34533, Sept. 7, 1988;
USCG–2013–0671, 78 FR 60146, Sept. 30, 2013]

§ 30.10–37 Keel laying date—TB/ALL.
The term keel laying date means the
date upon which progressive construction identifiable with a specific vessel
begins, including construction of the
first module or prefabricated section of
the hull that is identifiable with that
vessel.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.10–38 Lightweight—TB/ALL.
The term lightweight means the displacement of a vessel in metric tons
without cargo, oil fuel, lubricating oil,
ballast water, fresh water, feedwater in
tanks, consumable stores, and persons
and their effects.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

1 American Society for Testing Materials
Standard D 323 (incorporated by reference,
see § 30.01–3), Method of Test for Vapor Pressure of Petroleum Products (Reid Method).

§ 30.10–39 Liquefied flammable gas—
TB/ALL.
The term liquefied flammable gas
means any flammable gas having a
Reid vapor pressure exceeding 40
pounds, which has been liquefied.
[CGFR 66–33, 31 FR 15267, Dec. 6, 1966]

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31

§ 30.10–41

46 CFR Ch. I (10–1–14 Edition)

§ 30.10–41 Lakes, bays, and sounds—
TB/B.
Under this designation shall be included all tank vessels navigating the
waters of any of the lakes, bays, or
sounds other than the waters of the
Great Lakes.
§ 30.10–42 Machinery space—TB/ALL.
The term machinery space means any
space that contains machinery and related equipment including Category A
machinery spaces, propelling machinery, boilers, oil fuel units, steam and
internal combustion engines, generators and centralized electrical machinery, oil filling stations, refrigeration,
stabilizing, ventilation, and air conditioning machinery, and similar spaces
and trunks to such spaces.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.10–43 Marine inspector or inspector—TB/ALL.
The terms marine inspector or inspector mean any person from the civilian
or military branch of the Coast Guard
assigned under the superintendence
and direction of an Officer in Charge,
Marine Inspection, or any other person
as may be designated for the performance of duties with respect to the enforcement and administration of Subtitle II, Title 46, U.S. Code, Title 46 and
Title 33, U.S. Code, and regulations
issued under these statutes.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGD 95–028, 62 FR 11597, Sept. 30,
1997; USCG-1998–4442, 63 FR 52190, Sept. 30,
1998]

§ 30.10–45 Ocean—TB/O.
Under this designation shall be included all tank vessels normally navigating the waters of any ocean or the
Gulf of Mexico more than 20 nautical
miles offshore.
§ 30.10–47 Officer in Charge, Marine
Inspection—TB/ALL.
The term Officer in Charge, Marine Inspection, means any person from the civilian or military branch of the Coast
Guard designated as such by the Commandant and who under the superintendence and direction of the Coast
Guard District Commander is in charge
of an inspection zone for the perform-

ance of duties with respect to the enforcement and administration of Subtitle II, Title 46, U.S. Code, Title 46 and
Title 33, U.S. Code, and regulations
issued under these statutes.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGD 95–028, 62 FR 51197, Sept. 30,
1997]

§ 30.10–48

Oil fuel—TB/ALL.

The term oil fuel means oil used as
fuel for machinery in the vessel in
which it is carried.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.10–48a

Oil fuel unit—TB/ALL.

The term oil fuel unit means the
equipment used for the preparation of
oil fuel for delivery to an oil fired boiler, the equipment used for the preparation of heated oil fuel for delivery to an
internal combustion engine, and any
oil fuel pressure pump, filter, and heater that deals with oil at a pressure of
more than 1.8 kilograms per square
centimeter (25 p.s.i.) gauge.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.10–49

Permit—TB/ALL.

The term permit refers to endorsement on the certificate of inspection,
authorizing the presence on board of
liquid flammable or combustible cargoes in bulk, issued by an Officer in
Charge, Marine Inspection, for a tank
vessel which is found to be in substantial compliance with the regulations in
this subchapter.
§ 30.10–50 Pilot boarding equipment
and point of access.
(a) Pilot boarding equipment means a
pilot ladder, accommodation ladder,
pilot hoist, or combination of them as
required by this subchapter.
(b) Point of access means the place on
deck of a vessel where a person steps
onto or off of pilot boarding equipment.
[CGD 79–032, 49 FR 25455, June 21, 1984]

§ 30.10–55 Pressure
vacuum
relief
valve—TB/ALL.
The term pressure vacuum relief valve
means any device or assembly of a mechanical, liquid, weight, or other type
used for the automatic regulation of
pressure or vacuum in enclosed places.

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Coast Guard, DHS

§ 30.15–1

§ 30.10–57 Recognized classification society—TB/ALL.
The term recognized classification society means the American Bureau of
Shipping or other classification society
recognized by the Commandant.
§ 30.10–59
ALL.

Reid

vapor

pressure—TB/

The term Reid vapor pressure means
the vapor pressure of a liquid at a temperature of 100 °F., expressed in pounds
per square inch absolute, as determined
by the Reid Method as described in the
American Society for Testing Materials Standard D 323 (incorporated by
reference, see § 30.01–3), Method of Test
for Vapor Pressure of Petroleum Products. This Standard is available at
Headquarters for reading purposes or it
may be purchased from the Society at
100
Barr
Harbor
Drive,
West
Conshohocken, PA 19428–2959.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by USCG-2000–7790, 65 FR 58458,
Sept. 29, 2000]

§ 30.10–61

Rivers—TB/R.

Under this designation shall be included all tank vessels whose navigation is restricted to rivers and/or to canals, exclusively.
§ 30.10–62 Self-propelled tank vessel—
TB/ALL.
Self-propelled tank vessel means a selfpropelled tank vessel other than a
tankship.
[CGD 79–116, 62 FR 25135, May 8, 1997]

§ 30.10–62a

Service spaces—TB/ALL.

Service spaces are spaces that are
used for galleys, pantries containing
cooking appliances, lockers, storerooms, paint and lamp rooms and similar spaces that contain highly combustible materials, laundries, garbage and
trash disposal and stowage rooms,
workshops other than those forming
part of the machinery spaces, and similar spaces and trunks to such spaces.

and of a size suitable for the retention
or quenching of sparks in exhaust pipes
from internal combustion engines.
§ 30.10–65

Tank barge—B/ALL.

The term tank barge means a nonselfpropelled tank vessel.
[CGD 79–116, 62 FR 25135, May 8, 1997]

§ 30.10–67

Tankship—T/ALL.

The term tankship means a self-propelled tank vessel constructed or
adapted primarily to carry oil or hazardous material in bulk in the cargo
spaces.
[CGD 79–116, 62 FR 25135, May 8, 1997]

§ 30.10–69

Tank vessel—TB/ALL.

The term tank vessel means a vessel
that is constructed or adapted to carry,
or that carries, oil or hazardous material in bulk as cargo or cargo residue,
and that—
(a) Is a vessel of the United States;
(b) Operates on the navigable waters
of the United States; or
(c) Transfers oil or hazardous material in a port or place subject to the jurisdiction of the United States.
[CGD 79–116, 62 FR 25135, May 8, 1997]

§ 30.10–71

Tankerman—TB/ALL.

The following ratings are established
in part 13 of this chapter. The terms for
the ratings identify persons holding
valid endorsements for service in the
ratings issued under that part:
(a) Tankerman-PIC.
(b) Tankerman-PIC (Barge).
(c) Restricted Tankerman-PIC.
(d)
Restricted
Tankerman-PIC
(Barge).
(e) Tankerman-Assistant.
(f) Tankerman-Engineer.
[CGD 79–116, 60 FR 17155, Apr. 4, 1995, as
amended by USCG–2006–24371, 74 FR 11264,
Mar. 16, 2009]

Subpart 30.15—Equivalents

[CGD 74–127, 41 FR 3843, Jan. 26, 1976]

§ 30.15–1 Conditions
under
which
equivalents may be used—TB/ALL.

§ 30.10–63

(a) Where in this subchapter it is provided that a particular fitting, material, appliance, apparatus, or equipment, or type thereof, shall be fitted or

Spark arrester—TB/ALL.

The term spark arrester means any device, assembly, or method of a mechanical, centrifugal, cooling, or other type

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§ 30.25–1

46 CFR Ch. I (10–1–14 Edition)

carried in a vessel, or that any particular provision shall be made or arrangement shall be adopted, the Commandant may accept in substitution
therefor any other fitting, material,
apparatus, or equipment, or type thereof, or any other arrangement: Provided,
That he shall have been satisfied by
suitable trials that the fitting, material, appliance, apparatus, or equipment, or type thereof, or the provision
or arrangement is at least as effective
as that specified in this subchapter.
(b) In any case where it is shown to
the satisfaction of the Commandant
that the use of any particular equipment, apparatus, or arrangement not
specifically required by law is unreasonable or impracticable, the Commandant may permit the use of alternate equipment, apparatus, or arrangement to such an extent and upon such
conditions as will insure, to his satisfaction, a degree of safety consistent
with the minimum standards set forth
in this subchapter.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by USCG-2004–18884, 69 FR 58345,
Sept. 30, 2004; USCG–2004–18884, 69 FR 68089,
Nov. 23, 2004]

Subpart 30.25—Commodities
Regulated
§ 30.25–1 Cargoes carried in vessels
certificated under the rules of this
subchapter.
The cargoes listed in table 30.25–1 are
flammable or combustible and when
transported in bulk must be in vessels
certificated under the rules of this subchapter. A mixture or blend of two or
more cargoes appearing in table 30.25–1
may be transported under the provisions of this subchapter. A category A,
B, or C noxious liquid substance (NLS)
cargo, as defined in § 153.2 of this chapter, that is listed in table 30.25–1 and
any mixture containing one or more
category A, B, or C NLS cargoes listed
in table 30.25–1 may be carried in bulk
under this subchapter if the vessel is
not regulated under part 153 of this
chapter. If the vessel is regulated under
§ 153.1 of this chapter, category A, B,
and C NLS cargoes must be carried
under part 153, or, as an alternative in
the case of category C oil-like NLS,
under 33 CFR part 151. Requirements
for category D NLS cargoes and mixtures of non-NLS cargoes with category D NLS cargoes are in 33 CFR
part 151.

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES
Cargo name

IMO
Annex II
Pollution
Category

Acetone .........................................................................................................................................................................
Acetophenone ...............................................................................................................................................................
Acrylonitrile-Styrene copolymer dispersion in Polyether polyol ....................................................................................
Alcohols (C13+) .............................................................................................................................................................
Alcoholic beverages, n.o.s. ...........................................................................................................................................
Alcohol(C6–C17)(secondary) poly(3-6)ethoxylates .......................................................................................................
Alcohol(C6–C17)(secondary) poly(7-12)ethoxylates .....................................................................................................
Alcohol(C9–C11) poly(2.5-9)ethoxylate ........................................................................................................................
Alcohol(C12–C15) poly( ... )ethoxylates, see Alcohol(C12–C16) poly( ... )ethoxylates ...............................................
Alcohol(C12–C16) poly(1-6)ethoxylates ........................................................................................................................
Alcohol(C12–C16) poly(7-19)ethoxylates ......................................................................................................................
Alcohol(C12–C16) poly(20+)ethoxylates .......................................................................................................................
Alkanes (C6–C9) ...........................................................................................................................................................
n-Alkanes (C10+) ..........................................................................................................................................................
iso- & cyclo-Alkanes (C10–C11) ...................................................................................................................................
iso- & cyclo-Alkanes (C12+) ..........................................................................................................................................
Alkaryl polyether (C9–C20) ...........................................................................................................................................
Alkenyl(C11+) amine .....................................................................................................................................................
Alkenyl(C16–C20) succinic anhydride) .........................................................................................................................
Alkyl(C8+)amine, Alkenyl (C12+) acid ester mixture ....................................................................................................
Alkyl(C9+)benzenes ......................................................................................................................................................
Alkylbenzenesulfonic acid (4% or less) ........................................................................................................................
Alkyl dithiothiadiazole (C6–C24) ...................................................................................................................................
Alkyl ester copolymer (C4–C20) ...................................................................................................................................
Alkyl(C7–C11) phenol poly(4-12)ethoxylates ................................................................................................................
Alkyl phenol sulfide (C8–C40), see Alkyl(C8–C40) phenol sulfide ...............................................................................
Alkyl(C8–C40) phenol sulfide ........................................................................................................................................

III
@D
D
III
III
A
B
B
....................
A
B
C
C
III
D
III
B
D
D
D
III
#
D
D
B
....................
D

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Coast Guard, DHS

§ 30.25–1

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Alkyl(C9–C15) phenyl propoxylate ................................................................................................................................
n-Alkyl phthalates, see individual phthalates ................................................................................................................
Alkyl sulfonic acid ester of phenol ................................................................................................................................
Aminoethyldiethanolamine, Aminoethylethanolamine solution .....................................................................................
Amyl acetate (all isomers) .............................................................................................................................................
Amyl alcohol (iso-, n-, sec-, primary) ............................................................................................................................
Amyl alcohol (tert-) ........................................................................................................................................................
Amylene, see Pentene (all isomers) .............................................................................................................................
tert-Amyl methyl ether (Methyl tert-pentyl ether) ..........................................................................................................
Amyl methyl ketone, see Methyl amyl ketone ..............................................................................................................
Animal and Fish oils, n.o.s. ...........................................................................................................................................
(see also Oil, edible, or Oil, misc.)
Including:
Cod liver oil
Lanolin
Neatsfoot oil
Pilchard oil
Sperm oil
Animal and Fish acid oils and distillates, n.o.s. ............................................................................................................
Including:
Animal acid oil
Fish acid oil
Lard acid oil
Mixed acid oil
Mixed general acid oil
Mixed hard acid oil
Mixed soft acid oil
Aryl polyolefin (C11–C50) .............................................................................................................................................
Asphalt ...........................................................................................................................................................................
Asphalt blending stocks:
Roofers flux ............................................................................................................................................................
Straight run residue ................................................................................................................................................
Barium long chain (C11–C50) alkaryl sulfonate ...........................................................................................................
Barium long chain alkyl(C8–C14)phenate sulfide .........................................................................................................
Behenyl alcohol .............................................................................................................................................................
Benzene tricarboxylic acid trioctyl ester ........................................................................................................................
Benzyl alcohol ...............................................................................................................................................................
Brake fluid base mixtures ..............................................................................................................................................
(containing Poly(2-8)alkylene(C2–C3) glycols, Polyalkylene(C2–C10) glycol monoalkyl(C1–C4) ethers, and
their borate esters)
Butane ...........................................................................................................................................................................
Butene, see Butylene.
Butene oligomer ............................................................................................................................................................
Butyl acetate (all isomers) .............................................................................................................................................
Butyl alcohol (iso-, n-, sec-, tert-), see Butyl alcohol (all isomers) ...............................................................................
Butyl alcohol (all isomers) .............................................................................................................................................
Butyl benzyl phthalate ...................................................................................................................................................
Butylene .........................................................................................................................................................................
Butylene glycol ..............................................................................................................................................................
1,3-Butylene glycol, see Butylene glycol ......................................................................................................................
Butylene polyglycol, see Butylene glycol ......................................................................................................................
iso-Butyl formate ...........................................................................................................................................................
n-Butyl formate ..............................................................................................................................................................
Butyl heptyl ketone ........................................................................................................................................................
Butyl methyl ketone, see Methyl butyl ketone ..............................................................................................................
n-Butyl propionate .........................................................................................................................................................
Butyl stearate ................................................................................................................................................................
Butyl toluene ..................................................................................................................................................................
gamma-Butyrolactone ...................................................................................................................................................
Calcium alkyl(C9)phenol sulfide, polyolefin phosphorosulfide mixture .........................................................................
Calcium alkyl salicylate, see Calcium long chain alkyl salicylate (C13+) .....................................................................
Calcium long chain alkaryl sulfonate (C11–C50) ..........................................................................................................
Calcium long chain alkyl phenate (C8–C40), see Calcium long chain alkyl(C5–C10) phenate or Calcium long
chain alkyl(C11–C40) phenate ..................................................................................................................................
Calcium long chain alkyl(C5–C10) phenate ..................................................................................................................
Calcium long chain alkyl(C11–C40) phenate ................................................................................................................
Calcium long chain alkyl phenate sulfide (C8–C40) .....................................................................................................
Calcium long chain alkyl phenolic amine (C8–C40) .....................................................................................................
Calcium long chain alkyl salicylate (C13+) ...................................................................................................................
Caprolactam solutions ...................................................................................................................................................

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III
....................
III
III
C
D
III
C
C
D
D

D

D
I
I
I
B
[A]
III
III
C
D

LFG
B
C
....................
III
A
LFG
D
....................
....................
D
@D
[C]
....................
C
III
@A
D
A
....................
D
....................
C
D
D
III
C
D

§ 30.25–1

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Cetyl alcohol (hexadecanol), see Alcohols (C13+) .......................................................................................................
Cetyl-Stearyl alcohol), see Alcohols (C13+) .................................................................................................................
† Coal tar .......................................................................................................................................................................
Copper salt of long chain (C17+) alkanoic acid ............................................................................................................
Cumene (isopropylbenzene), see Propylbenzene (all isomers) ...................................................................................
Cyclohexane ..................................................................................................................................................................
Cyclohexanol .................................................................................................................................................................
1,3-Cyclopentadiene dimer (molten) .............................................................................................................................
p-Cymene ......................................................................................................................................................................
Decahydronaphthalene .................................................................................................................................................
iso-Decaldehyde ............................................................................................................................................................
n-Decaldehyde ..............................................................................................................................................................
Decane, see n-Alkanes (C10+) .....................................................................................................................................
Decene ..........................................................................................................................................................................
Decyl acetate .................................................................................................................................................................
Decyl alcohol (all isomers) ............................................................................................................................................
n-Decylbenzene, see Alkyl(C9+)benzenes ...................................................................................................................
Detergent alkylate .........................................................................................................................................................
Diacetone alcohol ..........................................................................................................................................................
Dialkyl(C10–C14) benzenes, see Alkyl(C9+)benzenes ................................................................................................
Dialkyl(C8–C9) diphenylamines ....................................................................................................................................
Dialkyl(C7–C13) phthalates
Including:
Diisodecyl phthalate
Diisononyl phthalate
Dinonyl phthalate
Ditridecyl phthalate
Diundecyl phthalate
Dibutyl carbinol, see Nonyl alcohol (all isomers) ..........................................................................................................
ortho-Dibutyl phthalate ..................................................................................................................................................
Dicyclopentadiene, see 1,3-Cyclopentadiene dimer (molten) ......................................................................................
Diethylbenzene ..............................................................................................................................................................
Diethylene glycol ...........................................................................................................................................................
Diethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether .................................................
Diethylene glycol butyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether acetate .......................
Diethylene glycol dibutyl ether ......................................................................................................................................
Diethylene glycol diethyl ether ......................................................................................................................................
Diethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether .................................................
Diethylene glycol ethyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether acetate .......................
Diethylene glycol n-hexyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether .............................................
Diethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ..............................................
Diethylene glycol methyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether acetate ....................
Diethylene glycol phenyl ether ......................................................................................................................................
Diethylene glycol phthalate ...........................................................................................................................................
Diethylene glycol propyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ...............................................
Di-(2-ethylhexyl)adipate .................................................................................................................................................
Di-(2-ethylhexyl)phthalate, see Dioctyl phthalates ........................................................................................................
Diethyl phthalate ............................................................................................................................................................
Diglycidyl ether of Bisphenol A .....................................................................................................................................
Diheptyl phthalate ..........................................................................................................................................................
Dihexyl phthalate ...........................................................................................................................................................
Diisobutylcarbinol, see Nonyl alcohol (all isomers) ......................................................................................................
Diisobutylene .................................................................................................................................................................
Diisobutyl ketone ...........................................................................................................................................................
Diisobutyl phthalate .......................................................................................................................................................
Diisodecyl phthalate, see Dialkyl(C7–C13) phthalates .................................................................................................
Diisononyl adipate .........................................................................................................................................................
Diisononyl phthalate, see Dialkyl(C7–C13) phthalates .................................................................................................
Diisooctyl phthalate .......................................................................................................................................................
Diisopropylbenzene (all isomers) ..................................................................................................................................
Diisopropyl naphthalene ................................................................................................................................................
Dimethyl adipate ............................................................................................................................................................
Dimethylbenzene, see Xylenes .....................................................................................................................................
Dimethyl glutarate .........................................................................................................................................................
Dimethyl phthalate .........................................................................................................................................................
Dimethylpolysiloxane, see Polydimethylsiloxane ..........................................................................................................
2,2-Dimethylpropane-1,3-diol (molten or solution) ........................................................................................................
Dimethyl succinate ........................................................................................................................................................
Dinonyl phthalate, see Dialkyl(C7–C13) phthalates .....................................................................................................
Dioctyl phthalate ............................................................................................................................................................

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....................
III
A
[D]
....................
C
D
B
C
D
@C
@B
....................
B
B
B
III
D
D
III
D
D

....................
A
B
A
D
....................
....................
D
III
....................
....................
....................
....................
....................
#
D
....................
D
....................
C
B
III
III
C
B
D
B
....................
D
....................
III
A
D
B
....................
C
C
III
D
C
....................
III

Coast Guard, DHS

§ 30.25–1

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Dipentene ......................................................................................................................................................................
Diphenyl .........................................................................................................................................................................
Diphenyl, Diphenyl ether mixture ..................................................................................................................................
Diphenyl ether ...............................................................................................................................................................
Diphenyl ether, Biphenyl phenyl ether mixture .............................................................................................................
Dipropylene glycol .........................................................................................................................................................
Dipropylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ...............................................
Dipropylene glycol dibenzoate ......................................................................................................................................
Dipropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ............................................
Distillates:
Flashed feed stocks ...............................................................................................................................................
Straight run .............................................................................................................................................................
Ditridecyl adipate ...........................................................................................................................................................
Ditridecyl phthalate, see Dialkyl(C7–C13) phthalates ...................................................................................................
Diundecyl phthalate, see Dialkyl(C7–C13) phthalates ..................................................................................................
Dodecane (all isomers), see also n-Alkanes (C10+) ....................................................................................................
Dodecanol .....................................................................................................................................................................
Dodecene (all isomers) .................................................................................................................................................
Dodecyl alcohol, see Dodecanol ...................................................................................................................................
Dodecylbenzene, see Alkyl(C9+)benzenes ..................................................................................................................
Dodecyl hydroxypropyl sulfide ......................................................................................................................................
Dodecyl phenol ..............................................................................................................................................................
Dodecyl xylene ..............................................................................................................................................................
Drilling mud (low toxicity) (if flammable or combustible) ..............................................................................................
Ethane ...........................................................................................................................................................................
2-Ethoxyethyl acetate ....................................................................................................................................................
Ethoxylated alkyloxy alkyl amine, see Ethoxylated long chain (C16+) alkyloxyalkanamine ........................................
Ethoxylated long chain (C16+) alkyloxyalkanamine .....................................................................................................
Ethoxy triglycol (crude) ..................................................................................................................................................
Ethyl acetate ..................................................................................................................................................................
Ethyl acetoacetate .........................................................................................................................................................
Ethyl alcohol ..................................................................................................................................................................
Ethyl amyl ketone ..........................................................................................................................................................
Ethylbenzene .................................................................................................................................................................
Ethyl butanol ..................................................................................................................................................................
Ethyl tert-butyl ether ......................................................................................................................................................
Ethyl butyrate ................................................................................................................................................................
Ethyl cyclohexane .........................................................................................................................................................
Ethylene .........................................................................................................................................................................
Ethylene carbonate .......................................................................................................................................................
Ethylene glycol ..............................................................................................................................................................
Ethylene glycol acetate .................................................................................................................................................
Ethylene glycol butyl ether acetate ...............................................................................................................................
Ethylene glycol diacetate ..............................................................................................................................................
Ethylene glycol dibutyl ether .........................................................................................................................................
Ethylene glycol ethyl ether acetate, see 2-Ethoxyethyl acetate ...................................................................................
Ethylene glycol methyl butyl ether ................................................................................................................................
Ethylene glycol methyl ether acetate ............................................................................................................................
Ethylene glycol phenyl ether .........................................................................................................................................
Ethylene glycol phenyl ether, Diethylene glycol phenyl ether mixture .........................................................................
Ethylene-Propylene copolymer (in liquid mixtures) .......................................................................................................
Ethyl-3-ethoxypropionate ...............................................................................................................................................
2-Ethylhexaldehyde, see Octyl aldehydes ....................................................................................................................
2-Ethylhexanoic acid, see Octanoic acid (all isomers) .................................................................................................
2-Ethylhexanol, see Octanol (all isomers) ....................................................................................................................
Ethylhexoic acid, see 2-Ethylhexanoic acid ..................................................................................................................
Ethyl hexyl phthalate .....................................................................................................................................................
2-Ethyl-2-(hydroxymethyl) propane-1,3-diol, C8–C10 ester .........................................................................................
Ethyl propionate ............................................................................................................................................................
Ethyl toluene ..................................................................................................................................................................
Fatty acid (saturated, C13+), see Fatty acid (saturated, C14+) ...................................................................................
Fatty acid (saturated, C14+) .........................................................................................................................................
Formamide ....................................................................................................................................................................
Furfuryl alcohol ..............................................................................................................................................................
† Gas oil, cracked .........................................................................................................................................................
Gasoline blending stocks:
Alkylates .................................................................................................................................................................
† Reformates ..........................................................................................................................................................
Gasolines:
† Automotive (containing not over 4.23 grams lead per gallon) ...........................................................................

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A
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[III]
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D
D
D
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B
@D
C
C
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LFG
III
D
D
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§ 30.25–1

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

† Aviation (containing not over 4.86 grams lead per gallon) ................................................................................
Casinghead (natural) ..............................................................................................................................................
Polymer ..................................................................................................................................................................
† Straight run .........................................................................................................................................................
Glycerine .......................................................................................................................................................................
Glycerine (83%), Dioxanedimethanol (17%) mixture ....................................................................................................
Glycerol, see Glycerine .................................................................................................................................................
Glycerol monooleate .....................................................................................................................................................
Glycerol polyalkoxylate ..................................................................................................................................................
Glyceryl triacetate ..........................................................................................................................................................
Glycidyl ester of tertiary carboxylic acid, see Glycidyl ester of tridecyl acetic acid .....................................................
Glycidyl ester of C10 trialkylacetic acid, see Glycidyl ester of tridecyl acetic acid ......................................................
Glycidyl ester of tridecyl acetic acid ..............................................................................................................................
Glycidyl ester of versatic acid, see Glycidyl ester of tridecyl acetic acid .....................................................................
Glycol diacetate, see Ethylene glycol diacetate ...........................................................................................................
Glycol triacetate, see Glyceryl triacetate ......................................................................................................................
Glyoxal solution (40% or less) ......................................................................................................................................
Glyphosate solution (not containing surfactant) ............................................................................................................
Heptadecane, see n-Alkanes (C10+) ............................................................................................................................
Heptane (all isomers), see Alkanes (C6–C9) ...............................................................................................................
Heptanoic acid ...............................................................................................................................................................
Heptanol (all isomers) ...................................................................................................................................................
Heptene (all isomers) ....................................................................................................................................................
Heptyl acetate ...............................................................................................................................................................
Herbicide (C15 -H22 -NO2 -Cl), see Metolachlor .........................................................................................................
1-Hexadecylnaphthalene, 1,4-bis(Hexadecyl)naphthalene mixture ..............................................................................
Hexaethylene glycol, see Polyethylene glycol ..............................................................................................................
Hexamethylene glycol ...................................................................................................................................................
Hexamethylenetetramine solutions ...............................................................................................................................
Hexane (all isomers), see Alkanes (C6–C9) ................................................................................................................
Hexanoic acid ................................................................................................................................................................
Hexanol .........................................................................................................................................................................
Hexene (all isomers) .....................................................................................................................................................
Hexyl acetate .................................................................................................................................................................
Hexylene glycol .............................................................................................................................................................
Hog grease, see Lard ...................................................................................................................................................
2-Hydroxy-4-(methylthio)butanoic acid ..........................................................................................................................
Hydroxy terminated polybutadiene, see Polybutadiene, hydroxy terminated ...............................................................
Isophorone .....................................................................................................................................................................
Jet fuels:
† JP-4 .....................................................................................................................................................................
JP-5 (kerosene, heavy) ..........................................................................................................................................
JP-8 ........................................................................................................................................................................
Kerosene .......................................................................................................................................................................
Lactic acid .....................................................................................................................................................................
Lard ...............................................................................................................................................................................
Latex (ammonia (1% or less) inhibited) ........................................................................................................................
Latex, liquid synthetic ....................................................................................................................................................
including:
Styrene-butadiene rubber ...............................................................................................................................
Carboxylated styrene-butadiene copolymer ...................................................................................................
Lecithin ..........................................................................................................................................................................
Long chain alkaryl polyether (C11–C20) ......................................................................................................................
Long chain alkaryl sulfonic acid (C16–C60) .................................................................................................................
Long chain alkylphenate/Phenol sulfide mixture ...........................................................................................................
Magnesium long chain alkaryl sulfonate (C11–C50) ....................................................................................................
Magnesium long chain alkyl phenate sulfide (C8–C20) ...............................................................................................
Magnesium long chain alkyl salicylate (C11+) ..............................................................................................................
Magnesium nonyl phenol sulfide, see Magnesium long chain alkyl phenate sulfide (C8–C20) ..................................
Magnesium sulfonate, see Magnesium long chain alkaryl sulfonate (C11–C50) ........................................................
2-Mercaptobenzothiazol (in liquid mixtures) .................................................................................................................
Methane .........................................................................................................................................................................
3-Methoxy-1-butanol ......................................................................................................................................................
3-Methoxybutyl acetate .................................................................................................................................................
1-Methoxy-2-propyl acetate ...........................................................................................................................................
Methoxy triglycol (triethylene glycol methyl ether), see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ................
Methyl acetate ...............................................................................................................................................................
Methyl acetoacetate ......................................................................................................................................................
Methyl alcohol ...............................................................................................................................................................
Methyl amyl acetate ......................................................................................................................................................

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Coast Guard, DHS

§ 30.25–1

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Methyl amyl alcohol .......................................................................................................................................................
Methyl amyl ketone .......................................................................................................................................................
Methyl butanol, see the amyl alcohols ..........................................................................................................................
Methyl butenol ...............................................................................................................................................................
Methyl tert-butyl ether ...................................................................................................................................................
Methyl butyl ketone .......................................................................................................................................................
Methyl butyrate ..............................................................................................................................................................
Methyl ethyl ketone .......................................................................................................................................................
N-Methylglucamine solution (70% or less) ...................................................................................................................
Methyl heptyl ketone .....................................................................................................................................................
Methyl isobutyl carbinol, see Methyl amyl alcohol ........................................................................................................
Methyl isobutyl ketone ...................................................................................................................................................
3-Methyl-3-methoxybutanol ...........................................................................................................................................
3-Methyl-3-methoxybutyl acetate ..................................................................................................................................
Methyl naphthalene .......................................................................................................................................................
Methyl pentene, see Hexene (all isomers) ...................................................................................................................
Methyl tert-pentyl ether (IMO cargo name) tert-Amyl methyl ether ..............................................................................
2-Methyl-1,3-propanediol ...............................................................................................................................................
Methyl propyl ketone .....................................................................................................................................................
N-Methyl-2-pyrrolidone ..................................................................................................................................................
Metolachlor ....................................................................................................................................................................
Mineral spirits ................................................................................................................................................................
Myrcene .........................................................................................................................................................................
Naphtha:
† Aromatic (having less than 10% Benzene) ........................................................................................................
Heavy .....................................................................................................................................................................
Paraffinic ................................................................................................................................................................
† Petroleum ............................................................................................................................................................
† Solvent ................................................................................................................................................................
Stoddard Solvent ....................................................................................................................................................
† Varnish makers’ and painters’ (75%) .................................................................................................................
Naphthalene sulfonic acid-formaldehyde copolymer, sodium salt solution ..................................................................
Naphthenic acid .............................................................................................................................................................
Nonane (all isomers), see Alkanes (C6–C9) ................................................................................................................
Nonanoic acid (all isomers) ...........................................................................................................................................
Nonanoic, Tridecanoic acid mixture ..............................................................................................................................
Nonene (all isomers) .....................................................................................................................................................
Nonyl acetate ................................................................................................................................................................
Nonyl alcohol (all isomers) ............................................................................................................................................
Nonyl methacrylate monomer .......................................................................................................................................
Nonyl phenol .................................................................................................................................................................
Nonyl phenol poly(4+)ethoxylates .................................................................................................................................
Nonyl phenol sulfide (90% or less), see Alkyl phenol sulfide (C8–C40) ......................................................................
Noxious liquid, N.F., (1) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 1, Cat A (if combustible) ..........
Noxious liquid, F., (2) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 1, Cat A .......................................
Noxious liquid, N.F., (3) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat A (if combustible) ..........
Noxious liquid, F., (4) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat A .......................................
Noxious liquid, N.F., (5) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat B (if combustible) ..........
Noxious liquid, N.F., (6) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat B, mp. equal to or greater than 15 deg. C (if combustible) .............................................................................................................................
Noxious liquid, F., (7) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat B .......................................
Noxious liquid, F., (8) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat B, mp. equal to or greater
than 15 deg. C ...........................................................................................................................................................
Noxious liquid, N.F., (9) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat A (if combustible) ..........
Noxious liquid, F., (10) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat A .....................................
Noxious liquid, N.F., (11) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat B (if combustible) ........
Noxious liquid, N.F., (12) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat B, mp. equal to or
greater than 15 deg. C (if combustible) ....................................................................................................................
Noxious liquid, F., (13) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat B .....................................
Noxious liquid, F., (14) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat B, mp. equal to or greater than 15 deg. C ......................................................................................................................................................
Noxious liquid, N.F., (15) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat C (if combustible) ........
Noxious liquid, F., (16) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat C .....................................
Noxious liquid, n.o.s. (17) (‘‘trade name,’’ contains ‘‘principal components’’), Category D (if flammable or combustible) ...........................................................................................................................................................................
Non-noxious liquid, n.o.s. (18) (‘‘trade name,’’ contains ‘‘principal components’’), appendix III (if flammable or combustible) .....................................................................................................................................................................
Octadecene, see the olefin or alpha-olefin entries .......................................................................................................
Octadecenoamide solution (oleamide) ..........................................................................................................................
Octane (all isomers), see Alkanes (C6–C9) .................................................................................................................

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C

§ 30.25–1

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Octanoic acid (all isomers) ............................................................................................................................................
Octanol (all isomers) .....................................................................................................................................................
Octene (all isomers) ......................................................................................................................................................
Octyl acetate .................................................................................................................................................................
Octyl alcohol (iso-, n-), see Octanol (all isomers) ........................................................................................................
Octyl aldehydes .............................................................................................................................................................
Octyl decyl adipate ........................................................................................................................................................
Octyl phthalate (Di-(2-ethylhexyl)phthalate), see Dioctyl phthalates ............................................................................
Oil, edible:
Beechnut ................................................................................................................................................................
Castor .....................................................................................................................................................................
Cocoa butter ...........................................................................................................................................................
Coconut ..................................................................................................................................................................
Cod liver .................................................................................................................................................................
Corn ........................................................................................................................................................................
Cottonseed .............................................................................................................................................................
Fish, n.o.s. ..............................................................................................................................................................
Groundnut ..............................................................................................................................................................
Hazelnut .................................................................................................................................................................
Lard ........................................................................................................................................................................
Maize, see Corn oil ................................................................................................................................................
Nutmeg butter ........................................................................................................................................................
Olive .......................................................................................................................................................................
Palm .......................................................................................................................................................................
Palm kernel ............................................................................................................................................................
Peanut ....................................................................................................................................................................
Poppy .....................................................................................................................................................................
Raisin seed ............................................................................................................................................................
Rapeseed ...............................................................................................................................................................
Rice bran ................................................................................................................................................................
Safflower ................................................................................................................................................................
Salad ......................................................................................................................................................................
Sesame ..................................................................................................................................................................
Soya bean ..............................................................................................................................................................
Sunflower, see Sunflower seed .............................................................................................................................
Sunflower seed ......................................................................................................................................................
Tucum ....................................................................................................................................................................
Vegetable, n.o.s. ....................................................................................................................................................
Walnut ....................................................................................................................................................................
Oil, fuel:
No. 1 (kerosene) ....................................................................................................................................................
No. 1-D ...................................................................................................................................................................
No. 2 .......................................................................................................................................................................
No. 2-D ...................................................................................................................................................................
No. 4 .......................................................................................................................................................................
No. 5 .......................................................................................................................................................................
No. 6 .......................................................................................................................................................................
Oil, misc:
Aliphatic ..................................................................................................................................................................
Animal, n.o.s. .........................................................................................................................................................
Aromatic .................................................................................................................................................................
Clarified ..................................................................................................................................................................
Coal ........................................................................................................................................................................
Coconut oil, fatty acid ............................................................................................................................................
Coconut oil, fatty acid methyl ester .......................................................................................................................
Cottonseed, fatty acid, see Cottonseed oil, fatty acid ...........................................................................................
† Crude ..................................................................................................................................................................
Diesel .....................................................................................................................................................................
Gas, high pour .......................................................................................................................................................
Gas, low pour .........................................................................................................................................................
Gas, low sulfur .......................................................................................................................................................
Heartcut distillate ....................................................................................................................................................
Lanolin ....................................................................................................................................................................
Linseed ...................................................................................................................................................................
Lubricating ..............................................................................................................................................................
Mineral ....................................................................................................................................................................
Mineral seal ............................................................................................................................................................
Motor ......................................................................................................................................................................
Neatsfoot ................................................................................................................................................................
Oiticica ....................................................................................................................................................................

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D

Coast Guard, DHS

§ 30.25–1

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Palm oil, fatty acid methyl ester .............................................................................................................................
Penetrating .............................................................................................................................................................
Perilla .....................................................................................................................................................................
Pilchard ..................................................................................................................................................................
Pine ........................................................................................................................................................................
Residual .................................................................................................................................................................
Road .......................................................................................................................................................................
Rosin ......................................................................................................................................................................
Seal ........................................................................................................................................................................
Soapstock ...............................................................................................................................................................
Soya bean (epoxidized) .........................................................................................................................................
Sperm .....................................................................................................................................................................
Spindle ...................................................................................................................................................................
Tall ..........................................................................................................................................................................
Tall, fatty acid .........................................................................................................................................................
Transformer ............................................................................................................................................................
Tung .......................................................................................................................................................................
Turbine ...................................................................................................................................................................
Whale .....................................................................................................................................................................
alpha-Olefins (C6–C18) .................................................................................................................................................
alpha-Olefins (C13–C18) ...............................................................................................................................................
Olefin mixtures (C5–C7) ................................................................................................................................................
Olefin mixtures (C5–C15) ..............................................................................................................................................
Olefins (C13+, all isomers) ............................................................................................................................................
Olefin/Alkyl ester copolymer (molecular weight 2000+) ................................................................................................
Oleic acid .......................................................................................................................................................................
Oleyl alcohol (octadecenol), see Alcohols (C13+) ........................................................................................................
Palm kernel acid oil, methyl ester .................................................................................................................................
Palm stearin ..................................................................................................................................................................
n-Paraffins (C10–C20), see n-Alkanes (C10+) .............................................................................................................
Pentadecanol, see Alcohols (C13+) ..............................................................................................................................
Pentaethylene glycol, see Polyethylene glycols ...........................................................................................................
Pentaethylenehexamine ................................................................................................................................................
Pentane (all isomers) ....................................................................................................................................................
Pentanoic acid ...............................................................................................................................................................
Pentene (all isomers) ....................................................................................................................................................
n-Pentyl propionate .......................................................................................................................................................
Petrolatum .....................................................................................................................................................................
1-Phenyl-1-xylyl ethane .................................................................................................................................................
Phosphate esters, alkyl(C12–C14) amine ....................................................................................................................
Phosphosulfurized bicyclic terpene ...............................................................................................................................
Pinene, see the alpha- or beta- isomers ......................................................................................................................
alpha-Pinene .................................................................................................................................................................
beta-Pinene ...................................................................................................................................................................
Polyalkylene glycols, Polyalkylene glycol monoalkyl ethers mixtures ..........................................................................
Polyalkylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ..............................................
Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ........................................................................................................
Including:
Diethylene glycol butyl ether
Diethylene glycol ethyl ether
Diethylene glycol n-hexyl ether
Diethylene glycol methyl ether
Diethylene glycol n-propyl ether
Dipropylene glycol butyl ether
Dipropylene glycol methyl ether
Polypropylene glycol methyl ether
Triethylene glycol butyl ether
Triethylene glycol ethyl ether
Triethylene glycol methyl ether
Tripropylene glycol methyl ether
Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether acetate ...........................................................................................
Including:
Diethylene glycol butyl ether acetate
Diethylene glycol ethyl ether acetate
Diethylene glycol methyl ether acetate
Polyalkylene oxide polyol ..............................................................................................................................................
Polycarboxylic ester (C9+), see Ditridecyl adipate.
Polyalkyl(C10–C20) methacrylate .................................................................................................................................
Polybutadiene, hydroxy terminated ...............................................................................................................................
Polybutene .....................................................................................................................................................................

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D

C
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[III]
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§ 30.25–1

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Polybutenyl succinimide ................................................................................................................................................
Polydimethylsiloxane .....................................................................................................................................................
Polyether (molecular weight 2000+) .............................................................................................................................
Polyethylene glycol ........................................................................................................................................................
Polyethylene glycol dimethyl ether ................................................................................................................................
Polyethylene glycol monoalkyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether .....................................
Polyglycerine, Sodium salts solution (containing less than 3% Sodium hydroxide) ....................................................
Polyglycerol ...................................................................................................................................................................
Polyisobutenyl anhydride adduct ..................................................................................................................................
Poly(4+)isobutylene .......................................................................................................................................................
Polymerized esters ........................................................................................................................................................
Polyolefin (molecular weight 300+) ...............................................................................................................................
Polyolefin amide alkeneamine (C17+) ..........................................................................................................................
Polyolefin amide alkeneamine (C28+) ..........................................................................................................................
Polyolefin amide alkeneamine borate (C28–C250) ......................................................................................................
Polyolefin amide alkeneamine/Molybdenum oxysulfide mixture ...................................................................................
Polyolefin amide alkeneamine polyol ............................................................................................................................
Polyolefin anhydride ......................................................................................................................................................
Polyolefin ester (C28–C250) .........................................................................................................................................
Polyolefin phenolic amine (C28–C250) .........................................................................................................................
Polyolefin phosphorosulfide, barium derivative (C28–C250) ........................................................................................
Poly(20)oxyethylene sorbitan monooleate ....................................................................................................................
Poly(5+)propylene .........................................................................................................................................................
Polypropylene glycol .....................................................................................................................................................
Polypropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether .........................................
Polysiloxane ..................................................................................................................................................................
Potassium oleate ...........................................................................................................................................................
Potassium salt of polyolefin acid ...................................................................................................................................
Propane .........................................................................................................................................................................
n-Propoxypropanol (propylene glycol propyl ether), see Propylene glycol monoalkyl ether .......................................
iso-Propyl acetate ..........................................................................................................................................................
n-Propyl acetate ............................................................................................................................................................
iso-Propyl alcohol ..........................................................................................................................................................
n-Propyl alcohol .............................................................................................................................................................
iso-Propylbenzene (cumene), see Propylbenzene (all isomers) ..................................................................................
n-Propylbenzene, see Propylbenzene (all isomers) .....................................................................................................
Propylbenzene (all isomers) ..........................................................................................................................................
iso-Propylcyclohexane ...................................................................................................................................................
Propylene ......................................................................................................................................................................
Propylene-butylene copolymer ......................................................................................................................................
Propylene carbonate .....................................................................................................................................................
Propylene dimer ............................................................................................................................................................
Propylene glycol ............................................................................................................................................................
Propylene glycol n-butyl ether, see Propylene glycol monoalkyl ether ........................................................................
Propylene glycol ethyl ether, see Propylene glycol monoalkyl ether ...........................................................................
Propylene glycol methyl ether, see Propylene glycol monoalkyl ether ........................................................................
Propylene glycol methyl ether acetate ..........................................................................................................................
Propylene glycol monoalkyl ether .................................................................................................................................
Including:
n-Propoxypropanol
Propylene glycol n-butyl ether
Propylene glycol ethyl ether
Propylene glycol methyl ether
Propylene glycol propyl ether
Propylene glycol phenyl ether .......................................................................................................................................
Propylene glycol propyl ether, see Propylene glycol monoalkyl ether .........................................................................
Propylene polymer (in liquid mixtures) ..........................................................................................................................
Propylene tetramer ........................................................................................................................................................
Propylene trimer ............................................................................................................................................................
Pseudocumene, see Trimethylbenzenes ......................................................................................................................
Rum, see Alcoholic beverages, n.o.s. ..........................................................................................................................
Sodium acetate, Glycol, Water mixture (containing 1% or less, Sodium hydroxide) (if flammable or combustible) ...
Sodium acetate solution ................................................................................................................................................
Sodium benzoate solution .............................................................................................................................................
Sodium long chain alkyl salicylate (C13+) ....................................................................................................................
Soyabean oil (epoxidized) .............................................................................................................................................
Stearic acid, see Fatty acid (saturated, C14+) .............................................................................................................
Stearyl alcohol (octadecanol) ........................................................................................................................................
Sulfohydrocarbon (C3–C88) ..........................................................................................................................................
Sulfohydrocarbon, long chain (C18+) alkylamine .........................................................................................................

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D
#
D
III
III
....................
III
III
III
III
#
III
D
D
D
C
D
D
D
D
C
III
III
D
....................
III
C
III
LFG
....................
III
D
III
III
....................
....................
A
C
LFG
III
III
C
III
....................
....................
....................
D
D

D
....................
#
B
B
....................
....................
#
D
D
[C]
[D]
....................
III
D
B

Coast Guard, DHS

§ 30.25–1

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
Cargo name

IMO
Annex II
Pollution
Category

Sulfolane ........................................................................................................................................................................
Sulfurized fat (C14–C20) ...............................................................................................................................................
Sulfurized polyolefinamide alkene(C28–C250)amine ...................................................................................................
Tallow ............................................................................................................................................................................
Tallow alcohol, see Alcohols (C13+) .............................................................................................................................
Tallow fatty acid ............................................................................................................................................................
Tallow alkyl nitrile ..........................................................................................................................................................
Tetradecanol, see Alcohols (C13+) ...............................................................................................................................
Tetradecene, see the olefin or alpha-olefin entries ......................................................................................................
Tetradecylbenzene, see Alkyl(C9+)benzenes ...............................................................................................................
Tetraethylene glycol ......................................................................................................................................................
Tetrahydronaphthalene .................................................................................................................................................
Tetrapropylbenzene, see Alkyl(C9+)benzenes .............................................................................................................
Toluene ..........................................................................................................................................................................
Triarylphosphate, see Triisopropylated phenyl phosphates .........................................................................................
Tributyl phosphate .........................................................................................................................................................
Tricresyl phosphate (less than 1% of the ortho isomer) ...............................................................................................
Tridecane, see n-Alkanes (C10+) .................................................................................................................................
Tridecanoic acid ............................................................................................................................................................
Tridecanol, see Alcohols (C13+) ...................................................................................................................................
Tridecene, see Olefins (C13+) ......................................................................................................................................
Tridecyl acetate .............................................................................................................................................................
Tridecylbenzene, see Alkyl(C9+)benzenes ...................................................................................................................
Triethylbenzene .............................................................................................................................................................
Triethylene glycol ..........................................................................................................................................................
Triethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ................................................
Triethylene glycol butyl ether mixture ...........................................................................................................................
Triethylene glycol di-(2-ethylbutyrate) ...........................................................................................................................
Triethylene glycol ether mixture ....................................................................................................................................
Triethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ................................................
Triethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ..............................................
Triethyl phosphate .........................................................................................................................................................
Triisooctyl trimellitate .....................................................................................................................................................
Triisopropanolamine ......................................................................................................................................................
Triisopropylated phenyl phosphates .............................................................................................................................
Trimethylbenzene (all isomers) .....................................................................................................................................
Trimethylol propane polyethoxylate ..............................................................................................................................
2,2,4-Trimethyl-1,3-pentanediol diisobutyrate ...............................................................................................................
2,2,4-Trimethyl-3-pentanol-1-isobutyrate ......................................................................................................................
Tripropylene, see Propylene trimer ...............................................................................................................................
Tripropylene glycol ........................................................................................................................................................
Tripropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1–C6) ether ...........................................
Trixylenyl phosphate .....................................................................................................................................................
Trixylyl phosphate, see Trixylenyl phosphate ...............................................................................................................
Turpentine .....................................................................................................................................................................
†Turpentine substitute, see White spirit (low (15–20%) aromatic) ...............................................................................
Undecanol, see 1- Undecyl alcohol ..............................................................................................................................
Undecene ......................................................................................................................................................................
1- Undecyl alcohol .........................................................................................................................................................
Undecylbenzene, see Alkyl(C9+)benzenes ..................................................................................................................
Vegetable oils, n.o.s. (see also Oil, edible) ..................................................................................................................

D
D
D
D
....................
D
#
....................
....................
III
III
C
....................
C
....................
B
A
....................
B
....................
....................
III
III
A
III
....................
#
[C]
#
....................
....................
D
#
III
A
A
D
III
#
....................
III
....................
A
A
B
....................
....................
B
B
III
D

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§ 30.25–1

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
IMO
Annex II
Pollution
Category

Cargo name

Including:
Beechnut oil
Castor oil
Cocoa butter
Coconut oil
Corn oil
Cottonseed oil
Groundnut oil
Hazelnut oil
Linseed oil
Nutmeg butter
Oiticica oil
Olive oil
Palm kernel oil
Palm oil
Peel oil (oranges and lemons)
Perilla oil
Poppy oil
Raisin seed oil
Rapeseed oil
Rice bran oil
Safflower oil
Salad oil
Sesame oil
Soya bean oil
Sunflower seed oil
Tucum oil
Tung oil
Walnut oil
Vegetable acid oils and distillates, n.o.s. ......................................................................................................................
Including:
Corn acid oil
Cottonseed acid oil
Dark mixed acid oil
Groundnut acid oil
Mixed acid oil
Mixed general acid oil
Mixed hard acid oil
Mixed soft acid oil
Rapeseed acid oil
Safflower acid oil
Soya acid oil
Sunflower seed acid oil
Waxes:
Candelilla ................................................................................................................................................................
Carnauba ................................................................................................................................................................
Paraffin ...................................................................................................................................................................
†White spirit, see White spirit (low (15–20%) aromatic) ...............................................................................................
†White spirit (low (15–20%) aromatic) ..........................................................................................................................
Wine, see Alcoholic beverages, n.o.s. ..........................................................................................................................
Xylenes (ortho-, meta-, para-) .......................................................................................................................................
Zinc alkaryl dithiophosphate (C7–C16) .........................................................................................................................
Zinc alkenyl carboxamide ..............................................................................................................................................
Zinc alkyl dithiophosphate (C3–C14) ............................................................................................................................

D

D
@D
@D
III
....................
B
....................
C
C
D
B

NOTE: See table 2 of part 153 for additional cargoes permitted to be carried by tank barge.
Explanation of Symbols: As used in this table the following stands for:
A, B, C, D—NLS Category of Annex II of MARPOL 73/78.
I—Considered an ‘‘oil’’ under Annex I of MARPOL 73/78.
III—Appendix III of Annex II (non-NLS cargoes) of MARPOL 73/78.
LFG—Liquefied flammable gas.
#—No determination of NLS status. For shipping on an oceangoing vessel, see 46 CFR 153.900(c).
[ ]—A NLS category in brackets indicates that the product is provisionally categorized and that further data are necessary to
complete the evaluation of its pollution hazards. Until the hazard evaluation is completed, the pollution category assigned is
used.
@—The NLS category has been assigned by the U.S. Coast Guard, in absence of one assigned by the IMO. The category is
based upon a GESAMP Hazard Profile or by analogy to a closely related product having an NLS assigned.
†—The provisions contained in 46 CFR part 197, subpart C, may apply to this cargo.
Abbreviations for Noxious liquid Cargoes:
N.F.—non-flammable (flash point greater than 60 degrees C (140 degrees F) cc).
F.—flammable (flash point less than or equal to 60 degrees C (140 degrees F) cc).
n.o.s.—not otherwise specified.

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Coast Guard, DHS

§ 30.25–1, Nt.

ST—Ship type.
Cat—Pollution category.
Words in italic are not part of the cargo name but may be used in addition to the cargo name.
When one entry references another entry by use of the word ‘‘see’’, and both names are in roman type, either name may be
used as the cargo name (e.g., Diethyl ether, see Ethyl ether). However, the referenced entry is preferred.

[CGD 00–7079, 65 FR 67157, Nov. 8, 2000]
EFFECTIVE DATE NOTE: By USCG–2013–0423, 78 FR 50152, Aug. 16, 2013, § 30.25–1 was revised,
effective Sept. 16, 2013. At 78 FR 56837, Sept. 16, 2013, the effectiveness was delayed until Jan.
16, 2014. At 79 FR 2106, Jan. 13, 2014, the effectiveness was delayed until Jan. 16, 2015. For the
convenience of the user, the revised text is set forth as follows:
§ 30.25–1 Cargoes carried in vessels certificated under the rules of this subchapter.
(a) Table 30.25–1 lists flammable or combustible cargoes that, when transported in bulk,
must be in vessels certificated under this subchapter D.
(b) A mixture or blend of two or more cargoes appearing in Table 30.25–1 may be transported
under this subchapter D.
(c) A mixture or blend of one or more cargoes appearing in Table 30.25–1 and one or more
cargoes appearing in Table 2, 46 CFR part 153, may be carried under this subchapter D if the
mixture is flammable or combustible.
(d) Any mixture containing one or more substance categorized by the International Maritime Organization (IMO) and listed in Table 30.25–1 as a category X, Y, or Z noxious liquid
substance (NLS) may be carried in bulk—
(1) Under this subchapter D if the vessel is not regulated under 46 CFR part 153;
(2) Under part 153 if the vessel is regulated under that part; or alternatively under 33 CFR
part 151 in the case of a category Y oil-like NLS; or
(3) Under 33 CFR part 151 if the cargo is a category Z NLS or a mixture of non-NLS and
category Z NLS cargoes.

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Acetochlor * ................................................................................................................................................................
Acetone .....................................................................................................................................................................
Acetophenone ...........................................................................................................................................................
Acrylonitrile-Styrene copolymer dispersion in polyether polyol .................................................................................
Alcohol(C6-C17)(secondary) poly(3-6)ethoxylates ....................................................................................................
Alcohol(C6-C17)(secondary) poly(7-12)ethoxylates ..................................................................................................
Alcohol(C9-C11) poly(2.5-9)ethoxylate .....................................................................................................................
Alcohol(C12-C15) poly( . . . )ethoxylates, see Alcohol(C12-C16) poly( . . . ) ethoxylates ..................................
Alcohol(C12-C16) poly(1-6)ethoxylates ....................................................................................................................
Alcohol(C12-C16) poly(7-19)ethoxylates ...................................................................................................................
Alcohol(C12-C16) poly(20+)ethoxylates ....................................................................................................................
Alcohols (C13+) .........................................................................................................................................................
Alcoholic beverages, n.o.s. .......................................................................................................................................
Aliphatic oil ................................................................................................................................................................
Alkanes (C6-C9) ........................................................................................................................................................
Iso- and cyclo-alkanes (C10-C11) ............................................................................................................................
Iso- and cyclo-alkanes (C12+) ..................................................................................................................................
n-Alkanes (C10+) ......................................................................................................................................................
Alkaryl polyethers (C9-C20) ......................................................................................................................................
Alkenyl(C11+) amide * ...............................................................................................................................................
Alkenyl(C8+) amine, Alkenyl(C12+) acid ester mixture ............................................................................................
Alkyl acrylate-Vinylpyridine copolymer in toluene * ...................................................................................................
Alkylbenzene, alkylindane, alkylindene mixture (each C12-C17) * ...........................................................................
Alkyl(C3-C4) benzenes* ............................................................................................................................................
Alkyl(C5-C8) benzenes* ............................................................................................................................................
Alkyl(C8-C9) phenylamine in aromatic solvents* ......................................................................................................
Alkyl(C9+) benzenes .................................................................................................................................................
Alkyl(C11-C17) benzene sulfonic acid * ....................................................................................................................
Alkylbenzene sulfonic acid (4% or less) ...................................................................................................................
Alkyl dithiocarbamate (C19-C35) * ............................................................................................................................
Alkyl dithiothiadiazole (C6-C24) ................................................................................................................................
Alkyl ester copolymer (C4-C20) ................................................................................................................................
Alkyl(C7-C11)phenol poly(4-12) ethoxylate ...............................................................................................................
Alkyl phenol sulfide (C8-C40), see Alkyl(C8-C40) phenol sulfide.
Alkyl(C8-C40) phenol sulfide .....................................................................................................................................
Alkyl(C8-C9) phenylamine in aromatic solvents * .....................................................................................................

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X
Z
#
Y
Y
Y
Y
Y
Y
Y
Y
Y
Z
I
X
Y
Y
Y
Y
X
#
Y
Z
Y
X
Y
Y
Y
#
Y
Y
Y
Y
Z
Y

§ 30.25–1, Nt.

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Alkyl(C9-C15) phenyl propoxylate .............................................................................................................................
Alkyl(C8-C10) polyglucoside solution (65% or less) * ...............................................................................................
Alkyl(C12-C14) polyglucoside solution (55% or less) * .............................................................................................
Alkyl(C8-C10)/(C12-C14):(40% or less/60% or more) polyglucoside solution (55% or less) * .................................
Alkyl(C8-C10)/(C12-C14):(60% or more/40% or less) polyglucoside solution (55% or less) * .................................
Alkyl(C8-C10)/(C12-C14):(50%/50%) polyglucoside solution (55% or less)* ...........................................................
Alkyl(C10-C20, saturated and unsaturated) phosphate * ..........................................................................................
n-Alkyl phthalates, see individual phthalates.
Alkyl sulfonic acid ester of phenol ............................................................................................................................
Aminoethyldiethanolamine/Aminoethylethanolamine solution ...................................................................................
2-Amino-2-methyl-1-propanol * ..................................................................................................................................
Amyl acetate (all isomers) .........................................................................................................................................
Amyl alcohol (iso-, n-, sec-, primary, tert-) ...............................................................................................................
tert-Amyl ethyl ether * ................................................................................................................................................
tert-Amyl methyl ether ...............................................................................................................................................
Amyl methyl ketone, see Methyl amyl ketone.
Amylene, see Pentene (all isomers).
Animal acid oil ...........................................................................................................................................................
Animal and Fish acid oils and distillates, n.o.s. ........................................................................................................
Animal and Fish oils, n.o.s. .......................................................................................................................................
Animal oil ...................................................................................................................................................................
Aromatic oil ................................................................................................................................................................
Aryl polyolefins (C11-C50) ........................................................................................................................................
Asphalt .......................................................................................................................................................................
Asphalt blending stocks:
Roofers flux .................................................................................................................................................
Straight run residue ....................................................................................................................................
Aviation alkylates (C8 paraffins and iso-paraffins BPT 95-120 °C) * ........................................................................
Barium long-chain alkyl (C8-C14) phenate sulfide ...................................................................................................
Beechnut oil ...............................................................................................................................................................
Behenyl alcohol, see Alcohols (C13+).
Benzene tricarboxylic acid, trioctyl ester ...................................................................................................................
Benzyl acetate* .........................................................................................................................................................
Benzyl alcohol ...........................................................................................................................................................
Brake fluid base mix: Poly(2-8)alkylene(C2-C3) glycols/Polyalkylene(C2-C10) glycols monoalkyl(C1-C4) ethers
and their borate esters ..........................................................................................................................................
Butene, see Butylene.
Butene oligomer ........................................................................................................................................................
Butyl acetate (all isomers) .........................................................................................................................................
Butyl alcohol (iso-, n-, sec-, tert-), see Butyl alcohol (all isomers).
Butyl alcohol (all isomers) .........................................................................................................................................
Butylbenzene (all isomers) * ......................................................................................................................................
Butyl benzyl phthalate ...............................................................................................................................................
Butyl butyrate (all isomers) * .....................................................................................................................................
Butylene glycol ..........................................................................................................................................................
1,3-Butylene glycol, see Butylene glycol.
iso-Butyl formate .......................................................................................................................................................
n-Butyl formate ..........................................................................................................................................................
Butyl heptyl ketone ....................................................................................................................................................
Butyl methyl ketone, see Methyl butyl ketone.
n-Butyl propionate .....................................................................................................................................................
Butyl stearate ............................................................................................................................................................
Butyl toluene ..............................................................................................................................................................
gamma-Butyrolactone ...............................................................................................................................................
Calcium alkyl(C9)phenol sulfide, polyolefin phosphorosulfide mixture .....................................................................
Calcium alkyl salicylate, see Calcium long-chain alkyl salicylate (C13+).
Calcium long-chain alkaryl sulfonate (C11-C50) ......................................................................................................
Calcium long-chain alkyl phenate (C8-C40), see Calcium long-chain alkyl(C5-C10) phenate or Calcium longchain alkyl(C11-C40) phenate.
Calcium long-chain alkyl(C5-C10) phenate ...............................................................................................................
Calcium long-chain alkyl(C11-C40) phenate ............................................................................................................
Calcium long-chain alkyl phenolic amine (C8-C40) ..................................................................................................
Calcium long-chain alkyl salicylate (C13+) ...............................................................................................................
Candelilla wax, see Waxes.
Caprolactam solutions, see epsilon-Caprolactam (molten or aqueous solutions).
epsilon-Caprolactam (molten or aqueous solutions) * ..............................................................................................
Carnauba wax, see Waxes.
Cetyl alcohol, see Alcohols (C13+).

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31

Z
Y
Y
Y
Y
Y
Y
Y
Z
Z
Y
Z
Z
X

#
#
#
#
I
Y
I
I
I
X
#
#
Y
Y
Y
Z
X
Y
Z
X
X
Y
Z
#
#
#
Y
#
#
Y
#
#

Y
Y
#
Y

Z

Coast Guard, DHS

§ 30.25–1, Nt.

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Cetyl- stearyl alcohol, see Alcohols (C13+).
Chlorinated paraffins (C10-C13) * .............................................................................................................................
1-(4-Chlorophenyl)-4,4-dimethyl-pentan-3-one * .......................................................................................................
Citric acid (70% or less) * ..........................................................................................................................................
Clarified oil .................................................................................................................................................................
Coal oil ......................................................................................................................................................................
Coconut oil fatty acid methyl ester * ..........................................................................................................................
Cod liver oil ...............................................................................................................................................................
Copper salt of long-chain (C17+) alkanoic acid ........................................................................................................
Corn acid oil ..............................................................................................................................................................
Cotton seed acid oil ..................................................................................................................................................
Cotton seed, fatty acid, see Cotton seed oil, fatty acid.
Cotton seed oil, fatty acid .........................................................................................................................................
Crude Isononylaldehyde ............................................................................................................................................
Crude Isopropanol .....................................................................................................................................................
dagger; Crude oil .......................................................................................................................................................
Cumene , see Propylbenzene (all isomers).
Cycloheptane * ...........................................................................................................................................................
Cyclohexane ..............................................................................................................................................................
Cyclohexanol .............................................................................................................................................................
Cyclohexyl acetate * ..................................................................................................................................................
1,3-Cyclopentadiene dimer (molten) .........................................................................................................................
Cyclopentane * ...........................................................................................................................................................
Cyclopentene * ...........................................................................................................................................................
p-Cymene ..................................................................................................................................................................
Dark mixed acid oil ....................................................................................................................................................
Decahydronaphthalene .............................................................................................................................................
iso-Decaldehyde ........................................................................................................................................................
n-Decaldehyde ..........................................................................................................................................................
Decane, see n-Alkanes (C10+).
Decanoic acid * ..........................................................................................................................................................
Decene ......................................................................................................................................................................
Decyl acetate .............................................................................................................................................................
Decyl alcohol (all isomers) ........................................................................................................................................
n-Decylbenzene, see Alkyl(C9+)benzenes.
Detergent alkylate, see Alkyl(C9+)benzenes.
Diacetone alcohol ......................................................................................................................................................
Dialkyl(C10-C14) benzenes, see Alkyl(C9+) benzenes.
Dialkyl(C8-C9) diphenylamines .................................................................................................................................
Dialkyl(C7-C13) phthalates .......................................................................................................................................
Including:
Diisodecyl phthalate.
Diisononyl phthalate.
Dinonyl phthalate.
Ditridecyl phthalate.
Diundecyl phthalate.
Dibutyl carbinol, see Nonyl alcohol (all isomers).
Dibutyl hydrogen phosphonate * ...............................................................................................................................
2,6-Di-tert-butylphenol * .............................................................................................................................................
Dibutyl phthalate * ......................................................................................................................................................
ortho-Dibutyl phthalate, see Dibutyl phthalate.
Dibutyl terephthalate * ...............................................................................................................................................
Dicyclopentadiene, see 1,3-Cyclopentadiene dimer (molten).
Diesel oil ....................................................................................................................................................................
Diethylbenzene ..........................................................................................................................................................
Diethylene glycol .......................................................................................................................................................
Diethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Diethylene glycol butyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether acetate.
Diethylene glycol diethyl ether ..................................................................................................................................
Diethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Diethylene glycol ethyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether acetate.
Diethylene glycol n-hexyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Diethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Diethylene glycol methyl ether acetate, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether acetate.
Diethylene glycol phenyl ether ..................................................................................................................................
Diethylene glycol phthalate .......................................................................................................................................
Diethylene glycol propyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Di-(2-ethylhexyl)adipate .............................................................................................................................................

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X
Y
Z
I
#
Y
#
Y
#
#
#
#
@Z
I
X
Y
Y
Y
Y*
Y
Y
Y
#
Y
#
#
X
X
#
Y

Z
Z
X

Y
X
X
Y
I
Y
Z

Z

#
Y
Y

§ 30.25–1, Nt.

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Di-(2-ethylhexyl)phthalate, see Dioctyl phthalate.
Diethyl phthalate ........................................................................................................................................................
Diglycidyl ether of bisphenol A ..................................................................................................................................
Diglycidyl ether of bisphenol F * ................................................................................................................................
Diheptyl phthalate ......................................................................................................................................................
Di-n-hexyl adipate * ...................................................................................................................................................
Dihexyl phthalate .......................................................................................................................................................
Diisobutyl carbinol, see Nonyl alcohol (all isomers).
Diisobutylene .............................................................................................................................................................
Diisobutyl ketone .......................................................................................................................................................
Diisobutyl phthalate ...................................................................................................................................................
Diisodecyl phthalate, see Dialkyl(C7-C13) phthalates.
Diisononyl adipate .....................................................................................................................................................
Diisononyl phthalate, see Dialkyl(C7-C13) phthalates.
Diisooctyl phthalate ...................................................................................................................................................
Diisopropylbenzene (all isomers) ..............................................................................................................................
Diisopropylnaphthalene .............................................................................................................................................
Dimethyl adipate ........................................................................................................................................................
Dimethylbenzene, see Xylenes.
Dimethyl glutarate .....................................................................................................................................................
Dimethyl octanoic acid * ............................................................................................................................................
Dimethyl phthalate .....................................................................................................................................................
Dimethylpolysiloxane .................................................................................................................................................
2,2-Dimethylpropane-1,3-diol (molten or solution) ....................................................................................................
Dimethyl succinate ....................................................................................................................................................
Dinonyl phthalate .......................................................................................................................................................
Dioctyl phthalate ........................................................................................................................................................
Dipentene ..................................................................................................................................................................
Diphenyl .....................................................................................................................................................................
Diphenylamine (molten) * ..........................................................................................................................................
Diphenylamines, alkylated * .......................................................................................................................................
Diphenyl/Diphenyl ether mixtures .............................................................................................................................
Diphenyl ether ...........................................................................................................................................................
Diphenyl ether/Diphenyl phenyl ether mixture ..........................................................................................................
Diphenylol propane-epichlorohydrin resins * .............................................................................................................
Dipropylene glycol .....................................................................................................................................................
Dipropylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Dipropylene glycol dibenzoate ..................................................................................................................................
Dipropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Dithiocarbamate ester (C7-C35)* ..............................................................................................................................
Distillates:
Flashed feed stocks ....................................................................................................................................
Straight run .................................................................................................................................................
Diundecyl phthalate ...................................................................................................................................................
Dodecane (all isomers) .............................................................................................................................................
Dodecanol, see Dodecyl alcohol.
Dodecene (all isomers) .............................................................................................................................................
Dodecyl alcohol .........................................................................................................................................................
Dodecyl benzene, see Alkyl (C9+) benzenes.
Dodecyl hydroxypropyl sulfide ..................................................................................................................................
Dodecyl phenol ..........................................................................................................................................................
Dodecyl xylene ..........................................................................................................................................................
Drilling brines (containing zinc salts) (if flammable or combustible) * .......................................................................
Drilling brines, including: Calcium bromide solution, calcium chloride solution and sodium chloride solution (if
flammable or combustible) * ..................................................................................................................................
Drilling mud (low toxicity) (if flammable or combustible) ..........................................................................................
ETBE, see Ethyl tert-butyl ether.
2-Ethoxyethyl acetate ................................................................................................................................................
Ethoxylated alkyloxy alkyl amine, see Ethoxylated long-chain (C16+) alkyloxyalkylamine.
Ethoxy triglycol (crude) ..............................................................................................................................................
Ethyl acetate ..............................................................................................................................................................
Ethyl acetoacetate .....................................................................................................................................................
Ethyl alcohol ..............................................................................................................................................................
Ethyl amyl ketone ......................................................................................................................................................
Ethylbenzene .............................................................................................................................................................
Ethyl butanol ..............................................................................................................................................................
Ethyl tert-butyl ether ..................................................................................................................................................
Ethyl butyrate ............................................................................................................................................................

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Coast Guard, DHS

§ 30.25–1, Nt.

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Ethyl cyclohexane .....................................................................................................................................................
S-Ethyl dipropylthiocarbamate * ................................................................................................................................
Ethylene carbonate ...................................................................................................................................................
Ethylene glycol ..........................................................................................................................................................
Ethylene glycol acetate .............................................................................................................................................
Ethylene glycol butyl ether acetate ...........................................................................................................................
Ethylene glycol diacetate ..........................................................................................................................................
Ethylene glycol dibutyl ether .....................................................................................................................................
Ethylene glycol ethyl ether acetate, see 2-Ethoxyethyl acetate.
Ethylene glycol methyl butyl ether ............................................................................................................................
Ethylene glycol methyl ether acetate ........................................................................................................................
Ethylene glycol phenyl ether .....................................................................................................................................
Ethylene glycol phenyl ether/Diethylene glycol phenyl ether mixture ......................................................................
Ethyl-3-ethoxypropionate ...........................................................................................................................................
2-Ethylhexaldehyde, see Octyl aldehydes.
2-Ethylhexanoic acid .................................................................................................................................................
Ethylhexoic acid, see 2-Ethylhexanoic acid.
2-Ethylhexanol, see Octanol (all isomers).
Ethyl hexyl phthalate .................................................................................................................................................
2-Ethyl-2-(hydroxymethyl) propane-1,3-diol, (C8-C10) ester ....................................................................................
Ethyl propionate ........................................................................................................................................................
Ethyl toluene ..............................................................................................................................................................
Fatty acid (saturated, C13+) .....................................................................................................................................
Fatty acids, (C16+) * ..................................................................................................................................................
Fatty acids, essentially linear (C6-C18) 2-ethylhexyl ester * ....................................................................................
Fish acid oil ...............................................................................................................................................................
Formamide ................................................................................................................................................................
Furfuryl alcohol ..........................................................................................................................................................
dagger; Gas oil, cracked ...........................................................................................................................................
Gas oil, high pour ......................................................................................................................................................
Gas oil, low pour .......................................................................................................................................................
Gas oil, low sulfur ......................................................................................................................................................
Gasoline blending stocks:
Alkylates ......................................................................................................................................................
dagger; Reformates ....................................................................................................................................
Gasolines:
dagger; Automotive (containing not over 4.23 grams lead per gallon) ......................................................
dagger; Aviation (containing not over 4.86 grams lead per gallon) ...........................................................
Casinghead (natural) ..................................................................................................................................
Polymer .......................................................................................................................................................
dagger; Straight run ....................................................................................................................................
Gasoline (Natural gas condensate) ..........................................................................................................................
Glycerine ...................................................................................................................................................................
Glycerine (83%), Dioxanedimethanol (17%) mixture ................................................................................................
Glycerol, see Glycerine.
Glycerol ethoxylated * ................................................................................................................................................
Glycerol monooleate .................................................................................................................................................
Glycerol polyalkoxylate ..............................................................................................................................................
Glycerol, propoxylated and ethoxylated * ..................................................................................................................
Glycerol/sucrose blend propoxylated and ethoxylated * ...........................................................................................
Glyceryl triacetate ......................................................................................................................................................
Glycidyl ester of tridecyl acetic acid, see Glycidyl ester of C10 trialkylacetic acid.
Glycidyl ester of versatic acid, see Glycidyl ester of C10 trialkylacetic acid.
Glycidyl ester of C10 trialkylacetic acid ....................................................................................................................
Glycol diacetate, see Ethylene glycol diacetate.
Glycol triacetate, see Glyceryl triacetate.
Glyoxal solution (40% or less) ..................................................................................................................................
Glyphosate solution (not containing surfactant) ........................................................................................................
Groundnut acid oil .....................................................................................................................................................
Groundnut oil * ...........................................................................................................................................................
Hazelnut oil ................................................................................................................................................................
Heartcut distillate .......................................................................................................................................................
Heptadecane, see n-Alkanes (C10+).
Heptane (all isomers) ................................................................................................................................................
Heptanoic acid, see n-Heptanoic acid.
n-Heptanoic acid * .....................................................................................................................................................
Heptanol (all isomers) ...............................................................................................................................................
Heptene (all isomers) ................................................................................................................................................

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§ 30.25–1, Nt.

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Heptyl acetate ...........................................................................................................................................................
Herbicide (C15H22NO2Cl), see N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methylchloroacetanilide.
Hexadecanol, see Alcohol (C 13+).
1-Hexadecylnaphthalene/1,4-Bis(hexadecyl)naphthalene mixture ...........................................................................
Hexaethylene glycol, see Polyethylene glycol.
Hexamethylene glycol ...............................................................................................................................................
Hexamethylenetetramine solutions ...........................................................................................................................
Hexane (all isomers) .................................................................................................................................................
1,6-Hexanediol, distillation overheads * ....................................................................................................................
Hexanoic acid ............................................................................................................................................................
Hexanol .....................................................................................................................................................................
Hexene (all isomers) .................................................................................................................................................
Hexyl acetate .............................................................................................................................................................
Hexylene glycol .........................................................................................................................................................
Hydrogenated starch hydrolysate * ...........................................................................................................................
2-Hydroxy-4-(methylthio)butanoic acid ......................................................................................................................
Hydroxy terminated polybutadiene, see Polybutadiene, hydroxy terminated.
Illipe oil * ....................................................................................................................................................................
Isoamyl alcohol * ........................................................................................................................................................
Isobutyl alcohol * ........................................................................................................................................................
Isobutyl formate * .......................................................................................................................................................
Isobutyl methacrylate * ..............................................................................................................................................
Isopropyl acetate * .....................................................................................................................................................
Isopropyl alcohol* ......................................................................................................................................................
Isopropylcyclohexane* ...............................................................................................................................................
Jatropha oil* ..............................................................................................................................................................
Jet fuels:
dagger; JP-4 ...............................................................................................................................................
JP-5 (kerosene, heavy) ...............................................................................................................................
JP-8 .............................................................................................................................................................
Kerosene ...................................................................................................................................................................
Lactic acid .................................................................................................................................................................
Lanolin oil ..................................................................................................................................................................
Lard acid oil ...............................................................................................................................................................
Latex: Carboxylated styrene-Butadiene copolymer; Styrene-Butadiene rubber* .....................................................
Lauric acid* ................................................................................................................................................................
Lecithin ......................................................................................................................................................................
Long-chain alkaryl polyether (C11-C20) ...................................................................................................................
Long-chain alkaryl sulfonic acid (C16-C60) ..............................................................................................................
Long-chain alkylphenate/Phenol sulfide mixture .......................................................................................................
Lubricating oil ............................................................................................................................................................
L-Lysine solution (60% or less) * ...............................................................................................................................
Magnesium long-chain alkaryl sulfonate (C11-C50) .................................................................................................
Magnesium long-chain alkyl phenate sulfide (C8-C20) ............................................................................................
Magnesium long-chain alkyl salicylate (C11+) ..........................................................................................................
Magnesium nonyl phenol sulfide, see Magnesium long-chain alkyl phenate sulfide (C8-C20).
Mango kernel oil * ......................................................................................................................................................
2-Mercaptobenzothiazol (in liquid mixtures) .............................................................................................................
3-Methoxy-1-butanol ..................................................................................................................................................
3-Methoxybutyl acetate .............................................................................................................................................
1-Methoxy-2-propyl acetate .......................................................................................................................................
N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methylchloroacetanilide * ............................................................................
Methoxy triglycol, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Methyl acetate ...........................................................................................................................................................
Methyl acetoacetate ..................................................................................................................................................
Methyl alcohol ...........................................................................................................................................................
Methylamyl acetate ...................................................................................................................................................
Methylamyl alcohol ....................................................................................................................................................
Methyl amyl ketone ...................................................................................................................................................
Methyl butanol, see the amyl alcohols.
Methylbutenol ............................................................................................................................................................
Methyl tert-butyl ether ...............................................................................................................................................
Methyl butyl ketone ...................................................................................................................................................
Methylbutynol * ..........................................................................................................................................................
Methyl butyrate ..........................................................................................................................................................
Methylcyclohexane * ..................................................................................................................................................
Methylcyclopentadiene dimmer * ...............................................................................................................................
Methyl 3-(3,5 di-tert-butyl-4-hydroxyphenyl)propionate crude melt * ........................................................................

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Coast Guard, DHS

§ 30.25–1, Nt.

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Methyl ethyl ketone ...................................................................................................................................................
N-Methylglucamine solution (70% or less) ...............................................................................................................
Methyl heptyl ketone .................................................................................................................................................
Methyl isobutyl carbinol, see Methyl amyl alcohol.
Methyl isobutyl ketone ...............................................................................................................................................
3-Methyl-3-methoxybutanol .......................................................................................................................................
3-Methyl-3-methoxybutyl acetate ..............................................................................................................................
Methyl pentene, see Hexene (all isomers).
Methyl tert-pentyl ether, see tert-Amyl methyl ether.
2-Methyl-1,3-propanediol ...........................................................................................................................................
Methyl propyl ketone .................................................................................................................................................
N-Methyl-2-pyrrolidone ..............................................................................................................................................
Methyl salicylate * ......................................................................................................................................................
Metolachlor, see N-(2-Methoxy-1-methylethyl)-2-ethyl-6-methylchloroacetanilide.
Mineral oil ..................................................................................................................................................................
Mineral seal oil ..........................................................................................................................................................
Mineral spirits ............................................................................................................................................................
Mixed acid oil ............................................................................................................................................................
Mixed general acid oil ...............................................................................................................................................
Mixed hard acid oil ....................................................................................................................................................
Mixed soft acid oil .....................................................................................................................................................
Motor oil .....................................................................................................................................................................
MTBE, see Methyl tert-butyl ether.
Myrcene .....................................................................................................................................................................
Naphtha:
dagger; Aromatic (having less than 10% Benzene) ...................................................................................
Heavy ..........................................................................................................................................................
Paraffinic .....................................................................................................................................................
dagger; Petroleum ......................................................................................................................................
dagger; Solvent ...........................................................................................................................................
Stoddard Solvent ........................................................................................................................................
dagger; Varnish makers’ and painters’ (75%) ............................................................................................
Naphthenic acid .........................................................................................................................................................
Neatsfoot oil ..............................................................................................................................................................
Neodecanoic acid * ....................................................................................................................................................
Nitrilotriacetic acid, trisodium salt solution * ..............................................................................................................
Nonane (all isomers) .................................................................................................................................................
Nonanoic acid (all isomers) .......................................................................................................................................
Nonanoic, Tridecanoic acid mixture ..........................................................................................................................
Nonene (all isomers) .................................................................................................................................................
Nonyl acetate ............................................................................................................................................................
Nonyl alcohol (all isomers) ........................................................................................................................................
Nonyl methacrylate monomer ...................................................................................................................................
Nonylphenol ...............................................................................................................................................................
Nonylphenol poly(4+)ethoxylate ................................................................................................................................
Nonyl phenol sulfide (90% or less), see Alkyl (C8-C40) phenol sulfide.
Noxious liquid, F, (2) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 1, Cat X ....................................
Noxious liquid, F, (4) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat X ....................................
Noxious liquid, F, (6) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 2, Cat Y ....................................
Noxious liquid, F, (8) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat Y ....................................
Noxious liquid, F, (10) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) ST 3, Cat Z ..................................
Noxious liquid, (11) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) Cat Z (if flammable or combustible)
Non noxious liquid, (12) n.o.s. (‘‘trade name’’ contains ‘‘principle components’’) Cat OS (if flammable or combustible) .................................................................................................................................................................
Nutmeg butter oil .......................................................................................................................................................
Octadecanol, see Alcohols (C13+).
Octadecene, see the olefin or alpha-olefin entries.
Octadeceneamide solution ........................................................................................................................................
Octamethylcyclotetrasiloxane* ...................................................................................................................................
Octane (all isomers) ..................................................................................................................................................
Octanoic acid (all isomers) ........................................................................................................................................
Octanol (all isomers) .................................................................................................................................................
Octene (all isomers) ..................................................................................................................................................
Octyl acetate, see n-Octyl acetate.
n-Octyl acetate * ........................................................................................................................................................
Octyl alcohol (iso-, n-), see Octanol (all isomers).
Octyl aldehydes .........................................................................................................................................................
Octyl decyl adipate ....................................................................................................................................................

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§ 30.25–1, Nt.

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Octyl phthalate, see Dioctyl phthalate.
Oil, edible: Poppy seed .............................................................................................................................................
Oil, fuel:
No. 1 (kerosene) .........................................................................................................................................
No. 1-D ........................................................................................................................................................
No. 2 ...........................................................................................................................................................
No. 2-D ........................................................................................................................................................
No. 4 ...........................................................................................................................................................
No. 5 ...........................................................................................................................................................
No. 6 ...........................................................................................................................................................
Oiticica oil ..................................................................................................................................................................
alpha-Olefins (C6-C18) mixtures ...............................................................................................................................
alpha-Olefins (C13-C18) mixtures, see alpha-Olefins (C6-C18).
Olefins (C13+, all isomers) ........................................................................................................................................
Olefin-Alkyl ester copolymer (molecular weight 2000+) ...........................................................................................
Olefin mixtures (C5-C7) ............................................................................................................................................
Olefin mixtures (C5-C15) ..........................................................................................................................................
Oleic acid ...................................................................................................................................................................
Oleyl alcohol, see Alcohols (C13+).
Orange juice (concentrated) * ....................................................................................................................................
Palm kernel acid oil, methyl ester .............................................................................................................................
Palm kernel olein * .....................................................................................................................................................
Palm kernel stearin * .................................................................................................................................................
Palm mid-fraction * ....................................................................................................................................................
Palm oil fatty acid methyl ester * ...............................................................................................................................
Palm olein * ................................................................................................................................................................
Palm stearin * ............................................................................................................................................................
Paraffin wax ...............................................................................................................................................................
n-Paraffins (C10-C20), see n-Alkanes (C10+).
Peanut oil, see Groundnut oil.
Peel oil (oranges and lemons) ..................................................................................................................................
Penetrating oil ...........................................................................................................................................................
Pentadecanol, see Alcohols (C13+).
Pentaethylene glycol, see Polyethylene glycols.
Pentane (all isomers) ................................................................................................................................................
Pentanoic acid ...........................................................................................................................................................
Pentene (all isomers) ................................................................................................................................................
n-Pentyl propionate ...................................................................................................................................................
Perilla oil ....................................................................................................................................................................
Petrolatum .................................................................................................................................................................
1-Phenyl-1-xylyl ethane .............................................................................................................................................
Phosphate esters, alkyl (C12-C14) amine ................................................................................................................
Phosphosulfurized bicyclic terpene ...........................................................................................................................
Pilchard oil .................................................................................................................................................................
Pinene, see the alpha- or beta- isomers.
alpha-Pinene .............................................................................................................................................................
beta-Pinene ...............................................................................................................................................................
Pine oil * .....................................................................................................................................................................
Polyalkyl(C18-C22) acrylate in xylene * ....................................................................................................................
Polyalkylene glycols, polyalkylene glycol monoalkyl ethers mixtures .......................................................................
Polyalkylalkenaminesuccinimide, molybdenum oxysulfide * .....................................................................................
Polyalkylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether ....................................................................................................
Including:
Diethylene glycol butyl ether.
Diethylene glycol ethyl ether.
Diethylene glycol n-hexyl ether.
Diethylene glycol methyl ether.
Diethylene glycol n-propyl ether.
Dipropylene glycol butyl ether.
Dipropylene glycol methyl ether.
Polypropylene glycol methyl ether.
Triethylene glycol butyl ether.
Triethylene glycol ethyl ether.
Triethylene glycol methyl ether.
Tripropylene glycol methyl ether.
Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether acetate .......................................................................................
Including:

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Coast Guard, DHS

§ 30.25–1, Nt.

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Diethylene glycol butyl ether acetate.
Diethylene glycol ethyl ether acetate.
Diethylene glycol methyl ether acetate.
Polyalkylene oxide polyol ..........................................................................................................................................
Polyalkyl(C10-C20) methacrylate ..............................................................................................................................
Polyalkyl(C10-C18) methacrylate/ethylene-propylene copolymer mixture * ..............................................................
Polybutadiene, hydroxy terminated ...........................................................................................................................
Polybutene .................................................................................................................................................................
Polybutenyl succinimide ............................................................................................................................................
Poly(2+)cyclic aromatics * ..........................................................................................................................................
Polydimethylsiloxane, see Dimethylpolysiloxane.
Polyether (molecular weight 1350+) .........................................................................................................................
Polyether polyols .......................................................................................................................................................
Polyethylene glycol ....................................................................................................................................................
Polyethylene glycol dimethyl ether ............................................................................................................................
Poly(ethylene glycol) methylbutenyl ether (MW≤1000) * ...........................................................................................
Polyethylene glycol monoalkyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Polyglycerine, sodium salt solution (containing less than 3% sodium hydroxide) ...................................................
Polyglycerol ...............................................................................................................................................................
Polyisobutenamine in aliphatic (C10-C14) solvent * .................................................................................................
Polyisobutenyl anhydride adduct ..............................................................................................................................
Poly(4+)isobutylene ...................................................................................................................................................
Polymerized esters ....................................................................................................................................................
Polyolefin amide alkeneamine (C17+) ......................................................................................................................
Polyolefin amide alkeneamine (C28+), see Polyolefin amide alkeneamine (C17+).
Polyolefin amide alkeneamine borate (C28-C250) ...................................................................................................
Polyolefin amide alkeneamine/Molybdenum oxysulfide mixture ...............................................................................
Polyolefin amide alkeneamine polyol ........................................................................................................................
Polyolefinamine (C28-C250) * ...................................................................................................................................
Polyolefinamine in alkyl (C2-C4) benzenes * ............................................................................................................
Polyolefinamine in aromatic solvent * ........................................................................................................................
Polyolefin aminoester salts (molecular weight 2000+) * ...........................................................................................
Polyolefin anhydride ..................................................................................................................................................
Polyolefin ester (C28-C250) ......................................................................................................................................
Polyolefin phenolic amine (C28-C250) .....................................................................................................................
Polyolefin phosphorosulfide, barium derivative (C28-C250) .....................................................................................
Poly(20)oxyethylene sorbitan monooleate ................................................................................................................
Poly(5+)propylene .....................................................................................................................................................
Polypropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Polysiloxane ..............................................................................................................................................................
Poppy oil ....................................................................................................................................................................
Potassium oleate .......................................................................................................................................................
Potassium salt of polyolefin acid ...............................................................................................................................
n-Propoxypropanol, see Propylene glycol monoalkyl ether.
n-Propyl acetate ........................................................................................................................................................
n-Propyl alcohol .........................................................................................................................................................
iso-Propylbenzene, see Propylbenzene (all isomers).
n-Propylbenzene, see Propylbenzene (all isomers).
Propylbenzene (all isomers) ......................................................................................................................................
Propylene-Butylene copolymer .................................................................................................................................
Propylene carbonate .................................................................................................................................................
Propylene dimer ........................................................................................................................................................
Propylene glycol ........................................................................................................................................................
Propylene glycol n-butyl ether, see Propylene glycol monoalkyl ether.
Propylene glycol ethyl ether, see Propylene glycol monoalkyl ether.
Propylene glycol methyl ether, see Propylene glycol monoalkyl ether.
Propylene glycol methyl ether acetate ......................................................................................................................
Propylene glycol monoalkyl ether .............................................................................................................................
Including:
n-Propoxypropanol.
Propylene glycol n-butyl ether.
Propylene glycol ethyl ether.
Propylene glycol methyl ether.
Propylene glycol propyl ether.
Propylene glycol phenyl ether ...................................................................................................................................
Propylene glycol propyl ether, see Propylene glycol monoalkyl ether.
Propylene polymer (in liquid mixtures) ......................................................................................................................
Propylene tetramer ....................................................................................................................................................

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#
Y
Y
#
Y
Y
X
Y
#
Z
Z
Z
Z
#
Y
Z
Y
#
Y
Y
#
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
#
Y
#
Y
Y

Y
#
Z
#
Z

Z
Z

Z
#
X

§ 30.25–1, Nt.

46 CFR Ch. I (10–1–14 Edition)

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Propylene trimer ........................................................................................................................................................
Pseudocumene, see Trimethylbenzenes.
Raisin seed oil ...........................................................................................................................................................
Rapeseed acid oil ......................................................................................................................................................
Rape seed oil fatty acid methyl esters* ....................................................................................................................
Residual oil ................................................................................................................................................................
Road oil .....................................................................................................................................................................
Rosin * .......................................................................................................................................................................
Rosin oil .....................................................................................................................................................................
Rum, see Alcoholic beverages, n.o.s.
Safflower acid oil .......................................................................................................................................................
Salad oil .....................................................................................................................................................................
Seal oil .......................................................................................................................................................................
Sesame oil .................................................................................................................................................................
Soapstock oil .............................................................................................................................................................
Sodium acetate, Glycol, Water mixture (containing 1% or less, Sodium hydroxide) (if flammable or combustible)
Sodium benzoate ......................................................................................................................................................
Sodium long-chain alkyl salicylate (C13+) ................................................................................................................
Sodium thiocyanate solution (56% or less) * ............................................................................................................
Soya acid oil ..............................................................................................................................................................
Soyabean fatty acid methyl ester ..............................................................................................................................
Soyabean oil (epoxidized) .........................................................................................................................................
Spindle oil ..................................................................................................................................................................
Stearic acid, see Fatty acid (saturated, C13+).
Stearyl alcohol, see Alcohols (C13+).
Sulfohydrocarbon (C3-C88) ......................................................................................................................................
Sulfohydrocarbon, long-chain (C18+) alkylamine .....................................................................................................
Sulfolane ....................................................................................................................................................................
Sulfurized fat (C14-C20) ...........................................................................................................................................
Sulfurized polyolefinamide alkene(C28-C250) amine ...............................................................................................
Sunflower oil, see Sunflower seed acid oil.
Sunflower seed acid oil .............................................................................................................................................
Tall oil, distilled * ........................................................................................................................................................
Tall oil, fatty acid .......................................................................................................................................................
Tallow ........................................................................................................................................................................
Tallow alcohol, see Alcohols (C13+).
Tallow alkyl nitrile ......................................................................................................................................................
Tallow fatty acid ........................................................................................................................................................
TAME, see tert-Amyl methyl ether.
Tetradecanol, see Alcohols (C13+).
Tetradecene, see alpha-Olefins (C6-C18) mixtures, Olefin mixtures (C5-C15), or Olefins (C13+, all isomers).
Tetradecylbenzene, see Alkyl(C9+)benzenes.
Tetraethylene glycol ..................................................................................................................................................
Tetraethyl silicate monomer/oligomer (20% in ethanol) * .........................................................................................
Tetrahydronaphthalene .............................................................................................................................................
Tetramethylbenzene (all isomers) * ...........................................................................................................................
Tetrapropylbenzene, see Alkyl(C9+)benzenes.
Toluene ......................................................................................................................................................................
Transformer oil ..........................................................................................................................................................
Triarylphosphate, see Triisopropylated phenyl phosphates.
Tributyl phosphate .....................................................................................................................................................
Tridecane ...................................................................................................................................................................
Tridecanoic acid ........................................................................................................................................................
Tridecanol, see Alcohols (C13+).
Tridecene, see Olefins (C13+, all isomers).
Tridecyl acetate .........................................................................................................................................................
Tridecylbenzene, see Alkyl(C9+)benzenes.
Triethylbenzene .........................................................................................................................................................
Triethylene glycol ......................................................................................................................................................
Triethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Triethylene glycol butyl ether mixture .......................................................................................................................
Triethylene glycol di-(2-ethylbutyrate) .......................................................................................................................
Triethylene glycol ether mixture ................................................................................................................................
Triethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Triethylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Triethyl phosphate .....................................................................................................................................................
Triisooctyl trimellitate .................................................................................................................................................
Triisopropanolamine ..................................................................................................................................................

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Y
#
#
Y
I
I
Y
#
#
#
I
#
#
#
Z
#
Y
#
#
#
I

Y
#
Y
Z
Z
#
Y
#
Y
#
Y

Z
Z
Y
X
Y
I
Y
Y
Y

Y
X
Z
#
#
#

Z
#
Z

Coast Guard, DHS

§ 30.25–3

TABLE 30.25–1—LIST OF FLAMMABLE AND COMBUSTIBLE BULK LIQUID CARGOES—Continued
[See NOTES at the end of the Table for explanation of symbols and terms used. See Table 2, 46 CFR part 153, for additional
cargoes that may be carried by tank barge.]
IMO Annex II
pollution
category

Cargo name
Triisopropylated phenyl phosphates .........................................................................................................................
Trimethylbenzene (all isomers) .................................................................................................................................
2,2,4-Trimethyl-1,3-pentanediol diisobutyrate ...........................................................................................................
2,2,4-Trimethyl-1,3-pentanediol-1-isobutyrate * .........................................................................................................
2,2,4-Trimethyl-3-pentanol-1-isobutyrate ...................................................................................................................
Tripropylene, see Propylene trimer.
Tripropylene glycol ....................................................................................................................................................
Tripropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether.
Trixylenyl phosphate, see Trixylyl phosphate.
Trixylyl phosphate .....................................................................................................................................................
Tucum oil ...................................................................................................................................................................
Turbine oil ..................................................................................................................................................................
Turpentine .................................................................................................................................................................
dagger; Turpentine substitute, see White spirit (low (15–20%) aromatic).
Undecanoic acid ........................................................................................................................................................
1-Undecanol, see Undecyl alcohol.
Undecene, see 1-Undecene.
1-Undecene ...............................................................................................................................................................
1-Undecyl alcohol, see Undecyl alcohol.
Undecyl alcohol .........................................................................................................................................................
Undecylbenzene, see Alkyl(C9+)benzenes.
Vegetable oils, n.o.s ..................................................................................................................................................
Vegetable protein solution (hydrolyzed) (if flammable or combustible) * ..................................................................
Walnut oil ...................................................................................................................................................................
Waxes ........................................................................................................................................................................
dagger; White spirit, see White spirit (low (15–20%) aromatic).
dagger; White spirit, low (15–20%) aromatic ............................................................................................................
Wine, see Alcoholic beverages, n.o.s.
Xylenes ......................................................................................................................................................................
Xylenes/Ethylbenzene (10% or more) mixture * .......................................................................................................
Zinc alkaryl dithiophosphate (C7-C16) ......................................................................................................................
Zinc alkenyl carboxamide ..........................................................................................................................................
Zinc alkyl dithiophosphate (C3-C14) .........................................................................................................................

X
X
Y
Y
#
Z

X
#
I
X
Y

X
X
#
OS
#
Y
Y
Y
Y
Y
Y
Y

NOTES:
‘‘#’’ = NLS status is undetermined—see 46 CFR 153.900(c) for shipping on an oceangoing vessel.
‘‘dagger;’’ = Marine occupational safety and health regulations for benzene, 46 CFR part 197, subpart C, may apply to this
cargo.
‘‘[ ]’’ = Provisional categorization to which the United States is party.
‘‘@’’ = The NLS category has been assigned by the U.S. Coast Guard, in absence of one assigned by the IMO. The category
is based upon a GESAMP Hazard Profile or by analogy to a closely related product having an NLS assigned.
‘‘*’’ From the March 2012 Annex to the 2007 edition of the IBC Code.
‘‘Cat’’ = Pollution category.
‘‘F’’ = Flammable (flash point less than or equal to 60 degrees C (140 degrees F) NLS.
‘‘I’’ = An ‘‘oil’’ under MARPOL Annex I.
Italicized words are not part of the cargo name but may be used in addition to the cargo name.
‘‘n.o.s.’’ = Not otherwise specified.
‘‘OS’’ = An ‘‘other substance’’ considered at present to present no harm to marine resources, human health, amenities, or
other legitimate uses of the sea when discharged into the sea from tank cleaning or deballasting operations.
‘‘see’’ = A redirection to the preferred, alternative cargo name—for example in ‘‘Diethyl ether, see Ethyl ether,’’ the pollution
category for ‘‘diethyl ether’’ will be found under the preferred, alternative cargo name ‘‘ethyl ether.’’
‘‘ST’’ = Ship type.
‘‘X,’’ ‘‘Y,’’ and ‘‘Z’’ = NLS categories under MARPOL Annex II.

§ 30.25–3

Benzene.

The provisions contained in 46 CFR
part 197, subpart C, apply to liquid cargoes containing 0.5% or more benzene
by volume.

Subpart 30.30—Interim Procedures
for Evaluating Vessel Personnel Licensing and Certification Programs of Foreign
Countries

[CGD 88–040, 56 FR 65006, Dec. 13, 1991]
SOURCE: CGD 79–081a, 45 FR 23427, Apr. 7,
1980, unless otherwise noted.

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§ 30.30–1
§ 30.30–1

46 CFR Ch. I (10–1–14 Edition)
Scope and purpose.

§ 30.30–7

Availability of materials.

(a) This subpart contains procedures
for evaluating vessel personnel licensing and certification programs of foreign countries. Evaluations are done
for countries which license or certificate personnel serving on tank vessels
that enter or operate in U.S. navigable
waters and ports.
(b) The purpose of each evaluation is
to determine whether a foreign licensing and certification program has
standards that are comparable to or
more stringent than U.S. standards.
(c) A determination that licensing
and certification standards of a foreign
country are not comparable to or more
stringent than U.S. standards will subject tank vessels manned with officers
licensed by that country to the prohibition in 33 U.S.C. 1228(a)(5) on operation with those officers in U.S. navigable waters and ports.

Evaluation materials submitted in
accordance with this subpart will be
available for inspection and copying at
Coast Guard Headquarters. Contact
Commandant (CG–CVC), Attn: Office of
Commercial Vessel Compliance, U.S.
Coast Guard Stop 7501, 2703 Martin Luther King Jr. Avenue SE., Washington,
DC 20593–7501; telephone 202–372–1251.

§ 30.30–3

§ 30.30–11

Evaluation materials.

The materials to be submitted for
evaluation must include the English
text of the following:
(a) All laws, decrees, orders, and regulations relating to manning, training,
qualification, and watchkeeping of personnel on tank vessels engaged in foreign trade.
(b) A copy of each type of license and
certificate issued by the country to
tank vessel personnel.
§ 30.30–5 Submission of evaluation materials.
(a) The evaluation materials listed in
§ 30.30–3 should be sent to Commandant
(CG–CVC), Attn: Office of Commercial
Vessel Compliance, U.S. Coast Guard
Stop 7501, 2703 Martin Luther King Jr.
Avenue SE., Washington, DC 20593–7501.
The materials should include the name
and address of the person to whom correspondence concerning the evaluation
can be sent.
(b) Updated materials may be submitted at any time during the evaluation process.
[CGD 79–081a, 45 FR 23427, Apr. 7, 1980, as
amended by CGD 95–072, 60 FR 50461, Sept. 29,
1995; CGD 96–041, 61 FR 50726, Sept. 27, 1996;
USCG–2009–0702, 74 FR 49226, Sept. 25, 2009;
USCG–2013–0671, 78 FR 60146, Sept. 30, 2013]

[USCG–2013–0671, 78 FR 60146, Sept. 30, 2013]

§ 30.30–9

Evaluation.

Materials submitted in accordance
with this subpart will be evaluated by
comparison to the regulations in parts
5, 10, and 13 of this chapter, and by
comparison to the U.S. laws referenced
in those regulations.
[CGD79–081a, 45 FR 23427, Apr. 7, 1980, as
amended by CGD 97–057, 62 FR 51043, Sept. 30,
1997]

Determinations.

(a) After evaluation of materials submitted in accordance with this subpart,
a determination will be made as to
whether the licensing and certification
program described by the materials has
standards that are comparable to or
more stringent than standards set by
the regulations and laws referenced in
§ 30.30–9.
(b) Notice of each determination
made in accordance with this section
and a brief explanation of reasons
therefor will be published in the FEDERAL REGISTER. A copy of this notice
will also be sent to the person whose
name is provided in accordance with
§ 30.30–5.
(c) Each determination remains in effect for 5 years unless sooner cancelled.
(d) Any request to reconsider a determination must be submitted to the address listed in § 30.30–5 and must include a statement of reasons in support. The person submitting the request will be notified in writing of the
action taken.
[CGD 79–081a, 45 FR 23427, Apr. 7, 1980, as
amended by USCG-2004–18884, 69 FR 58345,
Sept. 30, 2004; USCG–2004–18884, 69 FR 68089,
Nov. 23, 2004]

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Coast Guard, DHS

Pt. 31

PART 31—INSPECTION AND
CERTIFICATION
Subpart 31.01—General
Sec.
31.01–1 Inspections required—TB/ALL, preemptive effect.
31.01–3 Alternate compliance.
31.01–5 Scope of initial inspection—TB/ALL.
31.01–10 Authority of marine inspectors—
TB/ALL.
31.01–15 Application for a Certificate of inspection—TB/ALL.
31.01–20 Application for inspection of a new
tank vessel or conversion of a vessel to a
tank vessel—TB/ALL.

31.10–35 Permit to proceed to another port
for repair—TB/ALL.
31.10–40 Inspection during trial trip—T/
ALL.
31.10–45 Inspection of crew accommodations—TB/ALL.
31.10–50 Inspection of bilges—TB/ALL.

Subpart 31.15—Manning of Tank Vessels
31.15–1 Officers and crews—TB/ALL.
31.15–5 Tank barges—B/ALL.
31.15–10 Towing vessels may carry persons
in addition to crew—B/LBR.

Subpart 31.20—Waters Operated Over
31.20–1

Waters—TB/ALL.

31.25–1

Load lines required—TB/OCL.

Subpart 31.25—Load Lines

Subpart 31.05—Certificates of Inspection
31.05–1 Issuance of certificate of inspection—TB/ALL.
31.05–5 Posting the certificate of inspection—TB/ALL.
31.05–10 Period of validity for a Certificate
of Inspection—TB/ALL.
31.05–15 Certificate of inspection; terms; endorsements—TB/ALL.

Subpart 31.10—Inspections
31.10–1 Recognized classification society—
TB/ALL.
31.10–5 Inspection of new tank vessels—TB/
ALL.
31.10–10 Vessels converted to tank vessels—
TB/ALL.
31.10–15 Inspection for certification—TB/
ALL.
31.10–16 Inspection and certification of
cargo gear—TB/ALL.
31.10–17 Annual and periodic inspections—
TB/ALL.
31.10–17a Certificate of inspection: Conditions of validity.
31.10–18 Firefighting equipment: General—
TB/ALL.
31.10–18a Liquefied gas vessels: additional
firefighting equipment inspections.
31.10–19 All firefighting equipment may be
tested—TB/ALL.
31.10–20 Definitions relating to hull examinations—T/B ALL.
31.10–21 Drydock
examination,
internal
structural examination, cargo tank internal examination, and underwater survey intervals—TB/ALL.
31.01–21a Periodic gauging of tank vessel
midbodies more than 30 years old that
carry certain oil cargoes—TB/ALL.
31.10–22 Notice and plans required.
31.10–24 Integral fuel oil tank examinations—T/ALL.
31.10–25 Inspection covering repairs and alterations involving safety—TB/ALL.
31.10–30 Stability requirements—TB/ALL.
31.10–32 Loading information—TB/ALL.

Subpart 31.30—Marine Engineering
31.30–1 Marine engineering regulations and
material specifications—TB/ALL.

Subpart 31.35—Electrical Engineering
31.35–1 Electrical installations, lighting and
power equipment, batteries, etc.—TB/
ALL.
31.35–5 Communications; alarm systems,
telephone and voice tube systems, engine
telegraph systems, etc.—TB/ALL.

Subpart 31.36—Lifesaving Appliances and
Arrangements
31.36–1 Lifesaving appliances and arrangements—TB/ALL.

Subpart 31.40—Certificates Under International Convention for Safety of Life
at Sea, 1974
31.40–1 Application—T/ALL.
31.40–5 Cargo Ship Safety Construction Certificate—T/ALL.
31.40–10 Cargo Ship Safety Equipment Certificate—T/ALL.
31.40–15 Cargo Ship Safety Radio Certificate—T/ALL.
31.40–25 Exemption Certificate—T/ALL.
31.40–30 Safety Management Certificate—T/
ALL.
31.40–35 Availability of certificates.
31.40–40 Duration of Convention certificates—T/ALL.
31.40–45 American Bureau of Shipping—T/
ALL.
AUTHORITY: 33 U.S.C. 1321(j); 46 U.S.C. 2103,
3205, 3306, 3307, 3703; 46 U.S.C. Chapter 701; 49
U.S.C. 5103, 5106; E.O. 12234, 45 FR 58801, 3
CFR, 1980 Comp., p. 277; E.O. 12777, 56 FR
54757, 3 CFR, 1991 Comp., p. 351; Department
of Homeland Security Delegation No. 0170.1.

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§ 31.01–1

46 CFR Ch. I (10–1–14 Edition)

Section 31.10–21 also issued under the authority of Sect. 4109, Pub. L. 101–380, 104 Stat. 515.
SOURCE: CGFR 65–50, 30 FR 16662, Dec. 30,
1965, unless otherwise noted.

Subpart 31.01—General
§ 31.01–1 Inspections
required—TB/
ALL, preemptive effect.
(a) Every tank vessel subject to the
regulations in this subchapter shall be
inspected every 5 years or more often,
if necessary, by the Coast Guard to see
that the hull, boilers, machinery,
equipment, apparatus for storage, and
appliances of the vessel comply with
marine inspection laws, and the regulations in this subchapter, and when applicable, subchapters E, F, J, O, Q, S,
and W of this chapter and 33 CFR parts
155 and 157.
(b) Tank vessels which are laid up,
dismantled, and out of commission are
exempt from inspections required by
law or regulations in this subchapter,
provided that such vessels are cleaned
of all cargo residue and maintained in
a gas free condition.
(c) For inspection and tests of tanks
containing certain dangerous cargoes
in bulk, see part 98 and subchapter O of
this chapter.
(d) The regulations in this part have
preemptive effect over State or local
regulations in the same field.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGFR 70–10, 35 FR 3709, Feb. 25,
1970; CGD 80–009, 48 FR 36458, Aug. 11, 1983;
CGD 79–023, 48 FR 51006, Nov. 4, 1983; CGD 84–
069, 61 FR 25286, May 20, 1996; CGD 97–057, 62
FR 51043, Sept. 30, 1997; USCG-1999–4976, 65
FR 6499, Feb. 9, 2000; USCG–2006–24797, 77 FR
33872, June 7, 2012]

§ 31.01–3 Alternate compliance.
(a) In place of compliance with other
applicable provisions of this subchapter, the owner or operator of a vessel subject to plan review and inspection under this subchapter for initial
issuance or renewal of a Certificate of
Inspection may comply with the Alternate Compliance Program provisions of
part 8 of this chapter.
(b) For the purposes of this section, a
list of authorized classification societies, including information for ordering copies of approved classification society rules and supplements, is avail-

able from Commandant (CG–ENG),
Attn: Office of Design and Engineering
Systems, U.S. Coast Guard Stop 7509,
2703 Martin Luther King Jr. Avenue
SE., Washington, DC 20593–7509; telephone 202–372–1372 or fax 202–372–1925.
Approved classification society rules
and supplements are incorporated by
reference into 46 CFR 8.110(b).
[CGD 95–010, 62 FR 67536, Dec. 24, 1997, as
amended by USCG-1999–5004, 64 FR 30439,
June 8, 1999; USCG-2004–18884, 69 FR 58345,
Sept. 30, 2004; USCG–2006–25697, 71 FR 55745,
Sept. 25, 2006; USCG–2009–0702, 74 FR 49226,
Sept. 25, 2009; USCG–2013–0671, 78 FR 60146,
Sept. 30, 2013]

§ 31.01–5 Scope of initial inspection—
TB/ALL.
The initial inspection, which may
consist of a series of inspections during
the construction of a vessel, shall include a complete inspection of the
structure, including the outside of the
vessel’s bottom, the machinery, unfired
pressure vessels, equipment and the inside and outside of the boilers. The inspection shall be such as to insure that
the
arrangements,
material,
and
scantlings of the structure, boilers and
other pressure vessels and their appurtenances, piping, main and auxiliary
machinery, electrical installations,
lifesaving appliances, fire-detecting
and extinguishing equipment, pilot
boarding equipment and other equipment fully comply with the applicable
regulations for such vessel and are in
accordance with approved plans, and
determine that the vessel is in possession of a valid certificate issued by the
Federal Communications Commission,
if any. The inspection shall be such as
to ensure that the workmanship of all
parts of the vessel and its equipment is
in all respects satisfactory and that
the vessel is provided with lights,
means of making sound signals, and
distress signals as required by applicable statutes and regulations.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGFR 68–32, 33 FR 5712, Apr. 12,
1968; CGFR 68–82, 33 FR 18804, Dec. 18, 1968;
CGD 82–036, 48 FR 654, Jan. 6, 1983; CGD 79–
032, 49 FR 25455, June 21, 1984; CGD 95–012, 60
FR 48049, Sept. 18, 1995]

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Coast Guard, DHS

§ 31.05–10

§ 31.01–10 Authority of marine inspectors—TB/ALL.
Inspectors may at any time lawfully
inspect any tank vessel.
§ 31.01–15 Application for a Certificate
of inspection—TB/ALL.
(a) You must submit a written application for an inspection for certification to the cognizant OCMI. To
renew a Certificate of Inspection, you
must submit an application at least 30
days before the expiration of the tank
vessel’s current Certificate of Inspection. When renewing a Certificate of
Inspection, you must schedule an inspection for certification within the 3
months before the expiration date of
the current Certificate of Inspection.
(b) The application should be on
Form CG-3752, Application for Inspection of U.S. Vessel, which requires information on name and type of vessel,
nature of employment and route in
which to be operated, grade or type of
cargo to be carried, place where and
date when the vessel may be inspected,
and that no other application has been
made to any Officer in Charge, Marine
Inspection, since the issuance of the
last valid certificate of inspection.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by USCG-1999–4976, 65 FR 6499, Feb.
9, 2000]

§ 31.01–20 Application for inspection of
a new tank vessel or conversion of
a vessel to a tank vessel—TB/ALL.
Prior to the commencement of the
construction of any new tank vessel, or
prior to the commencement of the conversion of any vessel to a tank vessel,
application for the approval of contract
plans and specifications and for a certificate of inspection shall be made in
writing to the Coast Guard and no such
construction or conversion shall be
proceeded with until such approval is
granted. (See § 31.10–1.)

Subpart 31.05—Certificates of
Inspection
§ 31.05–1 Issuance of certificate of inspection—TB/ALL.
(a) When a tank vessel is found to
comply with all applicable regulations,
including the applicable provisions of

subchapters E, F, J, O, Q, S, and W of
this chapter and of 33 CFR parts 104,
155, and 157, the Officer in Charge, Marine Inspection will issue a certificate
of inspection to the vessel or to its
owners.
(b) Certificates of inspection for tank
vessels shall be similar in form to certificates issued to other cargo vessels,
and in addition to the manning requirements and waters over which they
may be operated, they shall be appropriately endorsed Inspected and approved for the carriage of flammable or
combustible liquids of Grade A, B, C, D,
or E (as the case may be), and such endorsement shall serve as a permit for
such vessel to operate. The endorsement for the carriage of liquefied flammable gases is set forth in § 38.01–5 of
this subchapter.
(c) The certificate of inspection shall
be delivered to the master or owner of
the tank vessel to which it relates.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGD 73–96, 42 FR 49024, Sept. 26,
1977; CGD 79–023, 48 FR 51006, Nov. 4, 1983;
CGD 84–069, 61 FR 25286, May 20, 1996; USCG2003–14749, 68 FR 39314, July 1, 2003]

§ 31.05–5 Posting the certificate of inspection—TB/ALL.
The certificate of inspection shall be
framed under glass and posted in a conspicuous part of the vessel, except that
where it is not practicable to so expose
the certificate of inspection it shall be
carried in the vessel in such manner as
authorized by the Officer in Charge,
Marine Inspection.
§ 31.05–10 Period of validity for a Certificate of Inspection—TB/ALL.
(a) A Certificate of Inspection is
valid for 5 years.
(b) Application may be made by the
master, owner, or agent for inspection
and issuance of a new certificate of inspection at any time during the period
of validity of the current certificate.
(c) Certificates of inspection may be
revoked or suspended by the Coast
Guard where such process is authorized
by law. This may occur if the vessel
does not meet the requirements of law
or regulations in this chapter or if

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§ 31.05–15

46 CFR Ch. I (10–1–14 Edition)

there is a failure to maintain the safety requirements requisite to the
issuance of a certificate of inspection.
[CGFR 68–82, 33 FR 18804, Dec. 18, 1968, as
amended by CGD 95–012, 60 FR 48049, Sept. 18,
1995; USCG-1999–4976, 65 FR 6499, Feb. 9, 2000]

§ 31.05–15 Certificate of inspection;
terms; endorsements—TB/ALL.
The terms, endorsements and conditions set forth on a certificate of inspection shall have the same force and
effect as the regulations contained in
this subchapter.

Subpart 31.10—Inspections
§ 31.10–1 Recognized classification society—TB/ALL.
(a) In the inspection of hulls, boilers,
and machinery, the current standards
established by the American Bureau of
Shipping and designated Rules for
Building and Classing Steel Vessels respecting material and construction of
hulls, boilers, and machinery, except as
otherwise provided for by law and regulations in this chapter, shall be accepted as standard by the Coast Guard.
(b) The current standards established
by the American Bureau of Shipping in
effect at the time of construction of
the vessel, or otherwise as applicable,
shall be used. The book Rules for Building and Classing Steel Vessels is usually
published annually and may be purchased from the American Bureau of
Shipping, ABS Plaza, 16855 Northchase
Drive, Houston, TX 77060. These standards may also be examined at the Coast
Guard Headquarters. Contact Commandant (CG–5PS), Attn: Director of
Commercial Regulations and Standards, U.S. Coast Guard Stop 7509, 2703
Martin Luther King Jr. Avenue SE.,
Washington, DC 20593–7509, or at the office of any Coast Guard District Commander or Officer in Charge, Marine
Inspection.
(c) The approved plans and certificate of the American Bureau of Shipping, or other recognized classification
society for classed vessels, may be accepted by the Coast Guard as evidence
of the structural efficiency of the hull
and reliability of machinery of vessels
subject to the regulations in this subchapter, except as otherwise provided

for by laws and regulations in this
chapter.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGFR 68–32, 33 FR 5712, Apr. 12,
1968; CGD 88–070, 53 FR 34533, Sept. 7, 1988; 53
FR 37570, Sept. 27, 1988; 53 FR 44011, Nov. 1,
1988; CGD 95–072, 60 FR 50461, Sept. 29, 1995;
USCG-2000–7790, 65 FR 58459, Sept. 29, 2000;
USCG–2009–0702, 74 FR 49226, Sept. 25, 2009;
USCG–2010–0759, 75 FR 60002, Sept. 29, 2010;
USCG–2013–0671, 78 FR 60146, Sept. 30, 2013]

§ 31.10–5 Inspection of new tank vessels—TB/ALL.
(a) Plans. Triplicate copies of contract plans and specifications shall be
forwarded to the Officer in Charge, Marine Inspection, in whose district the
construction will take place, for submission to the Commanding Officer
(MSC), Attn: Marine Safety Center,
U.S. Coast Guard Stop 7410, 4200 Wilson
Boulevard Suite 400, Arlington, VA
20598–7410, for approval, but if the tank
vessel is to be classed, such plans and
specifications shall first be approved
by a recognized classification society.
If the plans and specifications are
found to be in substantial agreement
with the regulations in this chapter,
they shall be approved, properly
stamped and dated and distributed as
follows: One set to owner or builder;
one set to Officer in Charge, Marine Inspection, of the district in which the
vessel is to be built; and one set shall
be retained at the Marine Safety Center. If such plans and specifications are
not approved, the Marine Safety Center
shall notify the owner or builder
promptly wherein they fail to comply
with the regulations in this chapter.
For list of electrical plans see subchapter J (Electrical Engineering) of
this chapter.
(1) The plans and specifications shall
include the arrangement of the cargo
gear. Prior to submission to the Officer
in Charge, Marine Inspection, plans
and specifications for cargo gear shall
be approved by either a recognized
classification society or the International Cargo Gear Bureau, Inc.,
whose home office is located at 321
West 44th Street, New York, NY 10036,
on the Internet at http://www.icgb.com.
(2) For vessels of 100 meters (328 feet)
or more in length contracted for on or
after September 7, 1990, a plan must be
included which shows how visibility

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Coast Guard, DHS

§ 31.10–16

from the navigation bridge will meet
the standards contained in § 32.16–1 of
this subchapter.
(b) Inspection. During construction,
and upon completion of each tank vessel, it shall be inspected by the Officer
in Charge, Marine Inspection, to determine whether it has been built in accordance with the approved plans and
specifications, and, if so, a certificate
of inspection endorsed as a permit for
the carriage of flammable or combustible liquids in bulk for the proper
grade or grades of cargo shall be issued
to the vessel or its owner.
(c) Certificate of class may be accepted.
In the event such tank vessel is classed
by the American Bureau of Shipping or
other recognized classification society,
the approved plans and certificates of
such society may be accepted by the
Coast Guard as evidence of the structural efficiency of the hull and reliability of machinery, except as otherwise provided for by law and the rules
and regulations in this subchapter.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGD 74–125A, 47 FR 15230, Apr. 8,
1982; CGD 85–099, 55 FR 32247, Aug. 8, 1990;
CGD 95–028, 62 FR 51197, Sept. 30, 1997; USCG2000–7790, 65 FR 58459, Sept. 29, 2000; USCG–
2007–29018, 72 FR 53964, Sept. 21, 2007; USCG–
2008–0906, 73 FR 56509, Sept. 29, 2008; USCG–
2009–0702, 74 FR 49226, Sept. 25, 2009; USCG–
2013–0671, 78 FR 60146, Sept. 30, 2013]

§ 31.10–10 Vessels converted to tank
vessels—TB/ALL.
The procedure for the inspection of
vessels converted to tank vessels shall
conform to the inspection for new tank
vessels as called for in § 31.10–5(b), and
such vessels shall comply with the requirements of inspections for converted
vessels as set forth in the regulations
in this subchapter.
§ 31.10–15 Inspection
for
certification—TB/ALL.
(a) After receiving an application for
inspection, the OCMI will inspect a
tank vessel in his or her jurisdiction
once every 5 years. The OCMI will ensure that every tank vessel is of a
structure suitable for the carriage of
flammable and/or combustible liquids
in bulk and for the proper grade or
grades of cargo the vessel carries while
in service. If the OCMI deems it necessary, he or she may direct the vessel

to be put in motion, and may adopt
any other suitable means to test the
tank vessel and its equipment.
(b) The inspection for certification
shall include an inspection of the
structure, boilers, and other pressure
vessels, machinery and equipment. The
inspection shall be such as to insure
that the vessel, as regards the structure, boilers, and other pressure vessels
and their appurtenances, piping, main
and auxiliary machinery, electrical installations, life-saving appliances, firedetecting and extinguishing equipment, pilot boarding equipment, and
other equipment is in satisfactory condition and fit for the service for which
it is intended, and that it complies
with the applicable regulations for
such vessels, and determine that the
vessel is in possession of a valid certificate issued by the Federal Communications Commission, if required. The
lights, means of making sound signals,
and distress signals carried by the vessel shall also be subject to the abovementioned inspection for the purpose
of ensuring that they comply with the
requirements of the applicable statutes
and regulations.
(c) If the vessel passes the inspection
for certification, the OCMI will issue a
new Certificate of Inspection.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGFR 68–32, 33 FR 5712, Apr. 12,
1968; CGFR 68–82, 33 FR 18804, Dec. 18, 1968;
CGD 82–036, 48 FR 655, Jan. 6, 1983; CGD 79–
032, 49 FR 25455, June 21, 1984; CGD 95–012, 60
FR 48049, Sept. 18, 1995; CGD 95–027, 61 FR
25997, May 23, 1996; USCG-1999–4976, 65 FR
6499, Feb. 9, 2000]

§ 31.10–16 Inspection and certification
of cargo gear—TB/ALL.
(a) The owner, operator or master
shall provide the Officer in Charge, Marine Inspection with all current valid
certificates and registers of cargo gear
issued by competent persons or a recognized organization or nonprofit association approved by the Commandant
to certify the suitability of the cargo
gear.
(b) Every acceptable cargo gear certificate and/or register shall be properly executed by a person authorized to
do so and shall:
(1) Certify as to the tests and examinations conducted;

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§ 31.10–17

46 CFR Ch. I (10–1–14 Edition)

(2) Show the dates on which the tests
and examinations were conducted; and
(3) Indicate that the cargo gear described in the certificate or register
complies with the standards of the organization or association authorized to
issue the certificate or register.
(c) Competent persons for the purposes of this section are defined as—
(1) Surveyors of a classification society recognized by the Commandant
under 46 U.S.C. 3316,
(2) Surveyors of a recognized cargo
gear organization; or
(3) Responsible officials or employees
of the testing laboratories, companies,
or organizations who conduct tests of
pieces of loose cargo gear, wire rope, or
the annealing of gear as may be required by the standards of the organization or association authorized to
issue the certificate or register.
(d) The registers issued in connection
with cargo gear certification must
have all required entries fully completed as of the dates indicated, shall
be kept current, and shall include the
following:
(1) A register of the cargo handling
machinery and the gear accessory
thereto carried on the vessel named
therein;
(2) Certification of the testing and
examination of winches, derricks, and
their accessory gear;
(3) Certification of the testing and
examination of cranes, hoists, and
their accessory gear;
(4) Certification of the testing and
examination of chains, rings, hooks,
shackles, swivels, and blocks;
(5) Certification of the testing and
examination of wire rope;
(6) Certification of the heat treatment of chains, rings, hooks, shackles,
and swivels which require such treatment; and,
(7) Certification of the annual thorough examinations of gear not required
to be periodically heat treated.
(e) The authorization for organizations to perform the required inspection is granted by the Chief, Office of
Vessel Activities, Commandant (CG–
CVC), and will continue until superseded, canceled, or modified. The following organizations are currently recognized by the Commandant (CG–CVC)

as having the technical competence to
handle the required inspection:
(1) National Cargo Bureau, Inc., with
home offices at 17 Battery Place, Suite
1232, New York, NY 10004; on the Internet at http://www.natcargo.org.
(2) The International Cargo Gear Bureau, Inc., with home office at 321 West
44th Street, New York, NY 10036; on the
Internet at http://www.icgb.com.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965,
amended by CGD 95–028, 62 FR 51197, Sept.
1997; USCG–2007–29018, 72 FR 53964, Sept.
2007; USCG–2008–0394, 73 FR 35961, June
2008; USCG–2008–0906, 73 FR 56509, Sept.
2008]

§ 31.10–17 Annual and periodic inspections—TB/ALL.
(a) Annual inspection. Your vessel
must undergo an annual inspection
within 3 months before or after each
anniversary date, except as specified in
paragraph (b) of this section.
(1) You must contact the cognizant
OCMI to schedule an inspection at a
time and place which he or she approves. No written application is required.
(2) The scope of the annual inspection
is the same as the inspection for certification but in less detail unless the
cognizant marine inspector finds deficiencies or determines that a major
change has occurred since the last inspection. If deficiencies are found or a
major change to the vessel has occurred, the marine inspector will conduct an inspection more detailed in
scope to ensure that the vessel is in
satisfactory condition and fit for the
service for which it is intended. If your
vessel passes the annual inspection, the
marine inspector will endorse your vessel’s current Certificate of Inspection.
(3) If the annual inspection reveals
deficiencies in your vessel’s maintenance, you must make any or all repairs or improvements within the time
period specified by the OCMI.
(4) Nothing in this subpart limits the
marine inspector from conducting such
tests or inspections he or she deems
necessary to be assured of the vessel’s
seaworthiness.
(b) Periodic inspection. Your vessel
must undergo a periodic inspection
within 3 months before or after the second or third anniversary of the date of

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Coast Guard, DHS

§ 31.10–18

your vessel’s Certificate of Inspection.
This periodic inspection will take the
place of an annual inspection.
(1) You must contact the cognizant
OCMI to schedule an inspection at a
time and place which he or she approves. No written application is required.
(2) The scope of the periodic inspection is the same as that for the inspection for certification, as specified in
§ 31.10–15(b). The OCMI will ensure that
the vessel is in satisfactory condition
and fit for the service for which it is intended. If your vessel passes the periodic inspection, the marine inspector
will endorse your vessel’s current Certificate of Inspection.
(3) If the periodic inspection reveals
deficiencies in your vessel’s maintenance, you must make any or all repairs or improvements within the time
period specified by the OCMI.
(4) Nothing in this subpart limits the
marine inspector from conducting such
tests or inspections he or she deems
necessary to be assured of the vessel’s
seaworthiness.

the tests and inspections. Such records
shall be made available to the marine
inspector upon request and shall be
kept for the period of validity of the
vessel’s current certificate of inspection. Where practicable, these records
should be kept in or with the vessel’s
logbook. The conduct of these tests and
inspections does not relieve the owner,
master, or person in charge of his responsibility to maintain this firefighting equipment in proper condition
at all times.
(b) The following tests and inspections of portable fire extinguishing
equipment shall be made:

[USCG-1999–4976, 65 FR 6499, Feb. 9, 2000]

Cartridge operated
(water, antifreeze or
loaded stream).

§ 31.10–17a Certificate of
Conditions of validity.

Inspection:

To maintain a valid Certificate of Inspection, you must complete your annual and periodic inspections within
the periods specified in § 31.10–17 (a) and
(b) and your Certificate of Inspection
must be endorsed.

TABLE 31.10–18(b)
Type unit

Test

Soda acid ......................

Discharge. Clean hose and inside
of extinguisher thoroughly. Recharge.
Discharge. Clean hose and inside
of extinguisher thoroughly. Recharge.
Discharge. Clean hose and inside
of extinguisher thoroughly. Recharge with clean water or antifreeze.
Examine pressure cartridge and
replace if end is punctured or if
cartridge is otherwise determined to have leaked or to be in
unsuitable condition. Remove
liquid, clean hose and inside of
extinguisher thoroughly. Recharge with clean water, solution,
or
antifreeze.
Insert
charged cartridge.
See that pressure gage is in operating range. If not, or if seal is
broken, weigh or otherwise determine that full charge is in extinguisher. Recharge if pressure
is low or if extinguishing agent is
needed.
Weigh cylinders. Recharge if
weight loss exceeds 10 percent
of weight of charge. Inspect
hose and nozzle to be sure they
are clear.1
Examine pressure cartridge and
replace if end is punctured or if
cartridge is otherwise determined to have leaked or to be in
unsuitable condition. Inspect
hose and nozzle to see if they
are clear. Insert charged cartridge. Be sure dry chemical is
freeflowing (not caked) and
chamber contains full charge.
See that pressure gage is in operating range. If not, or if seal is
broken, weigh or otherwise determine that full charge of dry
chemical is in extinguisher. Recharge if pressure is low or if dry
chemical is needed.

Foam .............................

Pump tank (water or
antifreeze).

Stored pressure (water,
antifreeze or loaded
stream).

[USCG-1999–4976, 65 FR 6500, Feb. 9, 2000]

§ 31.10–18 Firefighting
General—TB/ALL.

equipment:
Carbon dioxide ..............

(a) It shall be the duty of the owner,
master, or person in charge of a tank
vessel to require and have performed at
least once in every 12 months, the tests
and inspections of all hand portable
fire extinguishers, semiportable fire extinguishing systems, and fixed fire extinguishing systems on board, as described in paragraphs (b), (c), and (d) of
this section. The owner, master, or person in charge shall keep records of such
tests and inspections showing the dates
when performed, the number and/or
other identification of each unit tested
and inspected, and the name(s) of the
person(s) and/or company conducting

Dry chemical (cartridgeoperated type).

Dry chemical (stored
pressure type).

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§ 31.10–18

46 CFR Ch. I (10–1–14 Edition)

TABLE 31.10–18(b)—Continued
Type unit

TABLE 31.10–18(c)—Continued

Test

liquid 2

Vaporizing
(pump type).

Pump a few strokes into clean pail
and replace liquid. Keep water
out of extinguisher or liquid.
Keep extinguisher completely full
of liquid.
2
Vaporizing liquid
See that pressure gage is in oper(stored pressure type).
ating range. Weigh or check liquid level to determine that full
charge of liquid is in extinguisher. Recharge if pressure is
low or if liquid is needed.
1 Cylinders must be tested and marked, and all flexible connections and discharge hoses of semi-portable carbon dioxide
and halon extinguishers must be tested or renewed, as required by §§ 147.60 and 147.65 of this chapter.
2 Vaporizing-liquid type fire extinguishers containing carbon
tetrachloride or chlorobromomethane or other toxic vaporizing
liquids shall be removed from all vessels.

(c) The following tests and inspections of fixed fire extinguishing equipment shall be made:
TABLE 31.10–18(c)
Type system

Test

Foam ................

Systems utilizing a soda solution must
have that solution replaced. In all cases,
ascertain that powder is not caked.
Weigh cylinders. Recharge cylinder if
weight loss exceeds 10 percent of the
weight of the charge. Test time delays,
alarms, and ventilation shutdowns with
carbon dioxide, nitrogen, or other nonflammable gas as stated in the system
manufacturer’s instruction manual. Inspect hoses for damage or decay. Ensure that nozzles are unobstructed. Cylinders must be tested and marked, and
all flexible connections on fixed carbon
dioxide systems must be tested or renewed, as required by 46 CFR 147.60
and 147.65.
Recharge or replace if weight loss exceeds
5 percent of the weight of the charge or
if cylinder has a pressure gauge, recharge cylinder if pressure loss exceeds
10 percent adjusted for temperature.
Test time delays, alarms, and ventilation
shutdowns with carbon dioxide, nitrogen,
or other nonflammable gas as stated in
the system manufacturer’s instruction
manual. Inspect hoses for damage or
decay. Ensure that nozzles are unobstructed. Cylinders must be tested and
marked, and all flexible connections to
Halon 1301 and halocarbon cylinders
must be tested or renewed, as required
by 46 CFR 147.60 and 147.65 or
147.67.
NOTE: Halon 1301 system approvals have
expired, but existing systems may be retained if they are in good and serviceable condition to the satisfaction of the
Coast Guard inspector.

Carbon dioxide

Halon 1301 and
halocarbon.

Type system

Test

Inert gas ...........

Recharge or replace cylinder if cylinder
pressure loss exceeds 5 percent of the
specified gauge pressure, adjusted for
temperature. Test time delays, alarms,
and ventilation shutdowns with carbon
dioxide, nitrogen, or other nonflammable
gas as stated in the system manufacturer’s instruction manual. Ensure that nozzles are unobstructed. Cylinders must be
tested and marked, and all flexible connections on fixed inert extinguishers
must be tested or renewed, as required
by 46 CFR 147.60 and 147.66.
Maintain system in accordance with the
maintenance instructions in the system
manufacturer’s design, installation, operation, and maintenance manual.

Water mist .......

(d) Deck foam systems shall be tested
at the inspection for certification and
the periodic inspection by discharging
foam for approximately 15 seconds
from any nozzle designated by the marine inspector. It shall not be required
to deliver foam from all foam outlets,
but all lines and nozzles shall be tested
with water to prove them to be clear of
obstruction. Before the inspection for
certification and periodic inspection of
deck foam systems utilizing a mechanical foam system, a representative
sample of the foam liquid shall be submitted to the manufacturer who will
issue a certificate indicating gravity,
pH, percentage of water dilution and
solid content.
(e) At each inspection for certification, periodic inspection, and at such
other times as considered necessary,
the inspector shall determine that all
fire extinguishing equipment is in suitable condition and that the tests and
inspections required by paragraphs (b)
through (i) of this section have been
conducted. In addition, the marine inspector may require such tests as are
considered necessary to determine the
condition of the equipment.
(f) The marine inspector must check
all fire extinguishing system piping,
controls, valves, and alarms to ascertain that the system is in good operating condition. For carbon dioxide or
clean agent systems as described in 46
CFR subpart 95.16, the marine inspector must:
(1) Verify that flow is continuous and
that the piping and nozzles are unobstructed; and

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§ 31.10–20

(2) Verify that any discharge delays
and pre-discharge alarms function
properly during the flow test.
(g) The fire main system shall be operated and the pressure checked at the
most remote and highest outlets by the
marine inspector. All fire hose shall be
subjected to a test pressure equivalent
to the maximum pressure to which
they may be subjected in service, but
not less than 100 p.s.i. The marine inspector shall check that the hose couplings are securely fastened in accordance with the regulations of this subchapter.
(h) At each inspection for certification, periodic inspection, and at such
other times as considered necessary,
all carbon dioxide cylinders for fixed,
semiportable, and portable systems
shall be examined and replaced if any
corrosion is found. They shall also be
checked by weighing to determine
their contents, and if found to be more
than 10 percent under the required contents of carbon dioxide, they shall be
recharged.
(i) Steam smothering lines shall be
tested with at least 50 pounds per
square inch of air pressure or by blowing steam through the lines at the
working pressure and a survey made
for detecting corrosion and defects
using hammer test or such other means
as may be necessary.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGFR 68–32, 33 FR 5712, Apr. 12,
1968; CGD 84–044, 53 FR 7748, Mar. 10, 1988;
USCG-1999–4976, 65 FR 6500, Feb. 9, 2000;
USCG–2006–24797, 77 FR 33872, June 7, 2012]

§ 31.10–18a Liquefied gas vessels: additional firefighting equipment inspections.
(a) Once during each 12 month period
after the month an original Certificate
of Inspection is issued for a liquefied
gas vessel under § 31.05–1, the master
shall ensure that the firefighting systems required in part 154 of this chapter for a liquefied gas vessel meets the
following:
(1) The exterior water spray system
must past a water spray test.
(2) The dry chemical system must
meet the manufacturer’s specifications
for—
(i) The amount of dry chemical powder; and

(ii) The pressure for nitrogen bottles.
(3) The piping, valves, and controls of
the system must be operable.
(b) On the same date that the requirements under paragraph (a) of this
section are met, the master shall
record in the vessel’s official logbook
the following information:
(1) The date of the inspection.
(2) The identification of each device
inspected.
(3) The name of the inspector.
[CGD 74–289, 44 FR 26006, May 3, 1979]

§ 31.10–19 All firefighting equipment
may be tested—TB/ALL.
(a) During the inspection of firefighting equipment, the Officer in
Charge, Marine Inspection, may require fire apparatus to be tested, and
used, except as provided under §§ 31.10–
18(h) and 34.15–90(a) of this subchapter.
(b) [Reserved]
§ 31.10–20 Definitions relating to hull
examinations—T/B ALL.
As used in this part—
(a) Drydock examination means hauling out of a vessel or placing a vessel in
a drydock or slipway for an examination of all accessible parts of the vessel’s underwater body and all throughhull fittings.
(b) Internal structural examination
means an examination of the vessel
while afloat or in drydock and consists
of a complete examination of the vessel’s main strength members, including
the major internal framing, the hull
plating, voids, and ballast tanks, but
not including cargo or fuel oil tanks.
(c) Cargo tank internal examination
means an examination of the vessel
while afloat or in drydock and consists
of an examination of the internals of
all cargo tanks; except, if the vessel is
certificated to carry cargoes regulated
under part 38 or subchapter O of this
chapter, the cargo tank internal examination must be accomplished as specified in parts 38 and 151 of this chapter
respectively.
(d) Underwater survey means the examination, while the vessel is afloat, of

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§ 31.10–21

46 CFR Ch. I (10–1–14 Edition)

all accessible parts of the vessel’s underwater body and all through-hull fittings.
[CGD 84–024, 52 FR 39649, Oct. 23, 1987, as
amended by CGD 84–024, 53 FR 32229, Aug. 24,
1988; CGD 95–028, 62 FR 51197, Sept. 30, 1997]

§ 31.10–21 Drydock examination, internal structural examination, cargo
tank internal examination, and underwater survey intervals—TB/ALL.
(a) Except as provided in paragraphs
(b) through (g) of this section, each

tank vessel must undergo drydock, internal structural, and cargo tank internal examinations as follows:
(1) Except under paragraph (a)(2) of
this section, vessels that operate in
salt water must be inspected in accordance with the intervals set forth in
table 31.10–21(a). Where table 31.10–21(a)
indicates a 2.5 year examination interval, it means a vessel must undergo
two examinations within any five year
period. No more than three years may
elapse between any two examinations.

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Coast Guard, DHS

§ 31.10–21

(2) Vessels that operate in fresh
water at least six months in every 12
month period since the last drydock
examination must be examined in ac-

cordance with the intervals set forth in
table 31.10–21(b). Where table 31.10–21(b)
indicates a 2.5 year examination interval, it means a vessel must undergo

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ER30JY96.000

443

§ 31.10–21

46 CFR Ch. I (10–1–14 Edition)

two examinations within any five year
period. No more than three years may
elapse between any two examinations.

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Coast Guard, DHS

§ 31.10–21a

(b) During each inspection or reinspection for certification, all wing
voids, rakes, cofferdams, and other
void spaces on tank barges must be
opened and checked from on-deck for
the presence of water or cargo indicating hull damage or cargo tank leakage. If water or cargo is not present,
these spaces need not be gas freed, ventilated, cleaned, or otherwise prepared
for personnel entry. If water or cargo is
present, an internal structural examination may be required.
(c) If, during an internal structural
examination, cargo tank internal examination, or underwater survey, damage or deterioration to the hull plating, structural members, or cargo
tanks is discovered, the Officer in
Charge, Marine Inspection, may require the vessel to be drydocked or otherwise taken out of service to further
assess the extent of the damage and to
effect permanent repairs.
(d) Vessels less than 15 years of age
(except wooden hull vessels) that are in
salt water service with a 2.5 year drydock interval (as indicated in table
31.10–21(a) of this section) or that are in
fresh water service with a five year
drydock interval (as indicated in table
31.10–21(b) of this section) may be considered for an underwater survey instead of alternate drydock examinations, provided the vessel is fitted with
an effective hull protection system.
Vessel owners or operators must apply
to the Officer in Charge, Marine Inspection, for approval of underwater
surveys instead of alternate drydock
examinations for each vessel. The application must include the following
information:
(1) The procedure to be followed in
carrying out the underwater survey.
(2) The location where the underwater survey will be accomplished.
(3) The method to be used to accurately determine the diver location relative to the hull.
(4) The means that will be provided
for examining through-hull fittings.
(5) The means that will be provided
for taking shaft bearing clearances.
(6) The condition of the vessel, including the anticipated draft of the
vessel at the time of the survey.
(7) A description of the hull protection system.

(e) Vessels otherwise qualifying
under paragraph (d) of this section,
that are 15 years of age or older may be
considered for continued participation
in or entry into the underwater survey
program on a case-by-case basis, if—
(1) Before the vessel’s next scheduled
drydocking, the owner or operator submits a request for participation or continued participation to Commandant
(CG–CVC);
(2)
During
the
vessel’s
next
drydocking after the request is submitted, no appreciable hull deterioration is indicated as a result of a complete set of hull gaugings; and
(3) The results of the hull gauging
and the results of the Coast Guard drydock examination together with the
recommendation of the Officer in
Charge, Marine Inspection, are submitted to Commandant (CG–CVC) for
final approval.
(f) Each vessel which has not met
with the applicable examination schedules in paragraphs (a) through (e) of
this section because it is on a voyage,
must undergo the required examinations upon completion of the voyage.
(g) The Commandant (CG–CVC) may
authorize extensions to the examination intervals specified in paragraph
(a) of this section.
[CGD 84–024, 52 FR 39649, Oct. 23, 1987, as
amended at 53 FR 32230, Aug. 24, 1988; 53 FR
34872, Sept. 8, 1988; CGD 95–072, 60 FR 50461,
Sept. 29, 1995; CGD 91–045, 61 FR 39792, July
30, 1996; CGD 96–041, 61 FR 50726, Sept. 27,
1996; CGD 95–028, 62 FR 51198, Sept. 30, 1997;
USCG–2009–0702, 74 FR 49226, Sept. 25, 2009]

§ 31.10–21a Periodic gauging of tank
vessel midbodies more than 30
years old that carry certain oil cargoes—TB/ALL.
(a) As used in this section, the term
‘‘midbody’’ means the 40-percent midship length (0.40L) of the tank vessel.
The age of the midbody is determined
from its year of original construction.
(b) Midbodies of all tank vessels certificated to carry a pollution category
I oil cargo listed in 46 CFR table 30.25–
1 must undergo an initial gauging survey and periodic regauging surveys as
follows:
(1) An initial midbody gauging survey must be accomplished no later
than the next drydocking inspection

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§ 31.10–22

46 CFR Ch. I (10–1–14 Edition)

after the midbody becomes 30 years
old.
(2) Regaugings:
(i) Midbodies of double hull tank vessels, or single hull tank vessels with
independent tanks, that operated in
fresh water at least 6 months in every
12-month period since the last drydock
examination must be regauged at intervals not exceeding 10 years;
(ii) Midbodies of all other tank vessels must be regauged at intervals not
exceeding 5 years.
(c) The midbody gauging survey must
be comprised of at least three transverse (girth) belts of deck, bottom,
side, inner hull, trunk, and longitudinal bulkhead plating and attached
longitudinal members. The number and
specific locations of the gauging points
shall be to the satisfaction of the Officer in Charge of Marine Inspection
(OCMI).
(d) Except as provided in paragraph
(f) of this section, within 60 days of the
vessel’s required compliance date the
owner or operator shall submit the following to the OCMI that issued the vessel’s current Certificate of Inspection:
(1) The gauging survey results.
(2) An engineering analysis signed by
a registered Professional Engineer licensed by any state of the United
States or the District of Columbia, or
signed by a Coast Guard-approved organization, that—
(i) Certifies the vessel’s compliance
with the minimum section modulus
and plating thickness requirements of
subpart 32.59 of this chapter; or
(ii) Proposes structural repairs and/or
modifications that will bring the vessel
up to the required strength standards.
(e) The vessel owner or operator shall
keep a permanent copy of the Coast
Guard-approved gauging report available for inspection by the OCMI.
(f) Instead of the submittals required
by paragraphs (c) and (d) of this section, current classification with the
American Bureau of Shipping or another recognized classification society,
or a load line certificate issued in accordance with the International Convention on Load Lines or the International Voyage Load Line Act, may
be submitted as evidence of compliance
with the requirements of this section.
[CGD 91–209, 58 FR 52602, Oct. 8, 1993]

§ 31.10–22

Notice and plans required.

(a) The master, owner, operator, or
agent of the vessel shall notify the Officer in Charge, Marine Inspection,
whenever the vessel is to be drydocked
regardless
of
the
reason
for
drydocking.
(b) Each vessel, except barges, that
holds a Load Line Certificate must
have on board a plan showing the vessel’s scantlings. This plan must be
made available to the Coast Guard marine inspector whenever the vessel undergoes a drydock examination, internal structural examination, cargo tank
internal examination, or underwater
survey or whenever repairs are made to
the vessel’s hull.
(c) Each barge that holds a Load Line
Certificate must have a plan showing
the vessel’s scantlings. The plan need
not be maintained on board the barge
but must be made available to the
Coast Guard marine inspector whenever the barge undergoes a drydock examination, internal structural examination, cargo tank internal examination or underwater survey or whenever
repairs are made to the barge’s hull.
[CGD 84–024, 52 FR 39651, Oct. 23, 1987]

§ 31.10–24 Integral fuel oil tank examinations—T/ALL.
(a) Each fuel oil tank with at least
one side integral to the vessel’s hull
and located within the hull (integral
fuel oil tank) is subject to inspection as
provided in this section. The owner or
operator of the vessel shall have the
tanks cleaned out and gas freed as necessary to permit internal examination
of the tank or tanks designated by the
marine inspector. The owner or operator shall arrange for an examination
of the fuel tanks of each vessel during
an internal structural examination at
intervals not to exceed five years.
(b) Integral non-double-bottom fuel
oil tanks need not be cleaned out and
internally examined if the marine inspector is able to determine by external examination that the general condition of the tanks is satisfactory.
(c) Double-bottom fuel oil tanks on
vessels less than 10 years of age need
not be cleaned out and internally examined if the marine inspector is able
to determine by external examination

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Coast Guard, DHS

§ 31.10–35

that the general condition of the tanks
is satisfactory.
(d) All double-bottom fuel oil tanks
on vessels 10 years of age or older but
less than 15 years of age need not be
cleaned out and internally examined if
the marine inspector is able to determine by internal examination of at
least one forward double-bottom fuel
oil tank, and by external examination
of all other double-bottom fuel oil
tanks on the vessel, that the general
condition of the tanks is satisfactory.
(e) All double-bottom fuel oil tanks
on vessels 15 years of age or older but
less than 25 years of age need not be
cleaned out and internally examined if
the marine inspector is able to determine by internal examination of at
least one forward, one amidships, and
one aft double-bottom fuel oil tank,
and by external examination of all
other double-bottom fuel oil tanks on
the vessel, that the general condition
of the tanks is satisfactory.
(f) All double-bottom fuel oil tanks
on vessels 25 years of age or older need
not be cleaned out and internally examined if the marine inspector is able
to determine by internal examination
of at least one double-bottom fuel oil
tank in way of each cargo tank, and by
external examination of all other double-bottom fuel oil tanks, that the general condition of the tanks is satisfactory.
[CGD 84–024, 52 FR 39651, Oct. 23, 1987, as
amended at 53 FR 32230, Aug. 24, 1988]

§ 31.10–25 Inspection covering repairs
and alterations involving safety—
TB/ALL.
No extensive alterations involving
the safety of a tank vessel either in regard to hull or machinery shall be
made without the approval of the Commandant. Before such alterations are
carried out, copies of plans and specifications in triplicate for the work involved shall be forwarded to the Officer
in Charge, Marine Inspection, in whose
zone the repairs will be made, for submission to Headquarters for approval.
If approved one set of the plans and
specifications, properly stamped and
dated, shall be returned to the owner
or to the repair yard designated by the
owner; one set to the Officer in Charge,
Marine Inspection, who forwarded the

plans and specifications to Headquarters; and one set shall be retained
at Headquarters. If such plans and
specifications are not approved, the
Commandant shall promptly notify the
owner or designated shipyard wherein
they fail to comply with the regulations in this chapter. No extensive repairs to the hull or machinery which
affect the safety of a vessel shall be
made without the knowledge of the Officer in Charge, Marine Inspection.
§ 31.10–30
ALL.

Stability requirements—TB/

Each tank vessel must meet the applicable requirements in subchapter S
of this chapter.
[CGD 79–023, 48 FR 51006, Nov. 4, 1983]

§ 31.10–32
ALL.

Loading

information—TB/

(a) This section applies to each tankship and tank barge the construction of
which begins on or after September 6,
1977.
(b) Each tank vessel over 300 feet in
length must have the loading information prescribed in either § 42.15–1(a) or
§ 45.105(a) of this chapter. For tank vessels subject to the Load Line Acts the
information must be approved by the
Commandant or by a recognized classification society that is approved by the
Commandant. For tank vessels not
subject to the Load Line Acts loading
information must be approved by the
Commandant. If the vessel is a tankship, the approved information must be
provided to the master of the vessel. If
the vessel is a tank barge, the information must be provided to the person in
charge of handling the cargo during
loading or off-loading of the barge.
[CGD 75–041, 42 FR 28887, June 6, 1977; 42 FR
35650, July 11, 1977]

§ 31.10–35 Permit to proceed to another port for repair—TB/ALL.
(a) The Officer in Charge, Marine Inspection, may issue a permit to proceed
to another port for repair, Form CG948, to a vessel if in his judgment it can
be done with safety even if the certificate of inspection of the vessel has expired or is about to expire.

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§ 31.10–40

46 CFR Ch. I (10–1–14 Edition)

(b) Such permit will only be issued
upon the written application of the
master, owner or agent of the vessel.
(c) The permit will state upon its
face the conditions under which it is
issued and whether or not the vessel is
permitted to carry freight or passengers. Passengers may not be carried
if the certificate of inspection has expired.
(d) The permit shall be carried in a
manner similar to that described in
§ 31.05–5 for a certificate of inspection.
§ 31.10–40 Inspection
during
trial
trip—T/ALL.
On the trial trip of each new or converted tankship, an inspector shall be
present to observe from the standpoint
of safety in the carriage of flammable
and/or combustible liquids in bulk, the
operation of boilers, engines, steering
gear, and auxiliaries; and if not satisfied with the performance of such boilers and machinery, appliances, and apparatus for stowage, he shall make
such requirements as in his judgment
will overcome any deficiencies which
may have come under his observation.
§ 31.10–45 Inspection of crew accommodations—TB/ALL.
Crew’s quarters shall be inspected to
determine their sanitary condition.
The Officer in Charge, Marine Inspection, upon completing such inspection,
shall notify the master or officer in
charge of the vessel of his findings,
which shall be entered in the vessel’s
log book.
§ 31.10–50 Inspection of bilges—TB/
ALL.
(a) When inspecting oil-burning vessels, either internal-combustion type
or steam-driven type, the marine inspector shall examine the tank tops
and bilges in the fireroom and
engineroom to see that there is no accumulation of oil which might create a
fire hazard.

(COI) for each tank vessel the complement of officers and crew that are
required by statute and regulation and
that in the judgment of the OCMI are
necessary for its safe operation. The
OCMI may change the complement
from time to time by endorsement to
the COI for changes in conditions of
employment.
[CGD 79–116, 60 FR 17155, Apr. 4, 1995]

§ 31.15–5

[CGD 81–059, 54 FR 151, Jan. 4, 1989]

§ 31.15–10 Towing vessels may carry
persons in addition to crew—B/
LBR.
(a) Towing vessels engaged in towing
tank barges on the Great Lakes, inland
waters, or rivers, may be authorized by
the Coast Guard District Commander
of the district to carry on board such
number of persons in addition to its
crew as shall be deemed necessary to
carry on the legitimate business of
such towing vessel or barge, not exceeding, however, one person to every
net ton of the towing vessel.
(b) A Coast Guard District Commander granting a license to a vessel
engaged in towing to carry persons in
addition to its crew shall notify the Officer in Charge, Marine Inspection, in
whose jurisdiction the vessel receiving
the permit is engaged, and the Officer
in Charge, Marine Inspection, shall
keep a record of the same.

Subpart 31.20—Waters Operated
Over
§ 31.20–1

Subpart 31.15—Manning of Tank
Vessels
§ 31.15–1 Officers and crews—TB/ALL.
The Officer in Charge, Marine Inspection (OCMI), that inspects the vessel
enters on the Certificate of Inspection

Tank barges—B/ALL.

Tank barges subject to the provisions
of this subchapter need not be manned
unless, in the judgment of the Officer
in Charge, Marine Inspection, such
manning is necessary for the protection of life and property and for the
safe operation of the vessel.

Waters—TB/ALL.

The certificate of inspection shall
show the waters over which the tank
vessel is permitted to operate, such as:
all waters; oceans; coastwise; Great
Lakes; bays, sounds, and lakes other
than the Great Lakes; rivers; or inland
waters tributary to the Gulf of Mexico.

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Coast Guard, DHS

§ 31.40–10

Subpart 31.25—Load Lines
§ 31.25–1 Load
OCL.

lines

Subpart 31.36—Lifesaving
Appliances and Arrangements

required—TB/

All tank vessels of 150 gross tons or
over, or 79 feet in length or greater,
navigating the oceans, coastwise waters, and Great Lakes are subject to
the regulations in parts 42 to 45, inclusive, subchapter E (Load Lines), of this
chapter, as applicable.

§ 31.36–1 Lifesaving appliances and arrangements—TB/ALL.
All lifesaving appliances and arrangements on tank vessels must be in
accordance with subchapter W (Lifesaving Appliances and Arrangements)
of this chapter.
[CGD 84–069, 61 FR 25286, May 20, 1996]

[CGFR 69–72, 34 FR 17481, Oct. 29, 1969]

Subpart 31.40—Certificates Under
International Convention for
Safety of Life at Sea, 1974

Subpart 31.30—Marine
Engineering
§ 31.30–1 Marine engineering regulations and material specifications—
TB/ALL.
(a) All tank vessels are subject to the
regulations contained in parts 50 to 63,
inclusive, of subchapter F (Marine Engineering) of this chapter, whenever
applicable, except as such regulations
are modified by the regulations in this
subchapter for tank vessels.
[CGFR 68–82, 33 FR 18804, Dec. 18, 1968]

Subpart 31.35—Electrical
Engineering
§ 31.35–1 Electrical installations, lighting and power equipment, batteries, etc.—TB/ALL.
All tank vessels are subject to the
regulations contained in subchapter J
(Electrical Engineering) of this chapter
except as such regulations are modified
by the regulations in this subchapter
for tank vessels.
§ 31.35–5 Communications; alarm systems, telephone and voice tube systems, engine telegraph systems,
etc.—TB/ALL.
All tank vessels are subject to the
regulations contained in subchapter J
(Electrical Engineering) of this chapter
except as such regulations are modified
by the regulations in this subchapter
for tank vessels.

§ 31.40–1

Application—T/ALL

The provisions of this subpart shall
apply to all tankships on an international voyage. (See § 30.01–6 of this
chapter.)
[CGD 95–012, 60 FR 48049, Sept. 18, 1995, as
amended by USCG-1999–4976, 65 FR 6500, Feb.
9, 2000]

§ 31.40–5 Cargo Ship Safety Construction Certificate—T/ALL.
(a) All tankships on an international
voyage are required to have a Cargo
Ship Safety Construction Certificate.
This certificate shall be issued by the
U.S. Coast Guard or the American Bureau of Shipping to certain vessels on
behalf of the United States of America
as provided in Regulation 12, Chapter I,
of the International Convention for
Safety of Life at Sea, 1974.
(b) All such tankships shall meet the
applicable requirements of this chapter
for tankships on an international voyage.
[CGFR 65–50, 30 FR 16662, Dec. 30, 1965, as
amended by CGD 90–008, 55 FR 30660, July 26,
1990]

§ 31.40–10 Cargo Ship Safety Equipment Certificate—T/ALL.
(a) All tankships on an international
voyage are required to have a Cargo
Ship Safety Equipment Certificate.
(b) All such tankships shall meet the
applicable requirements of this chapter
for tankships on an international voyage.

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§ 31.40–15

46 CFR Ch. I (10–1–14 Edition)

§ 31.40–15 Cargo Ship Safety Radio
Certificate—T/ALL.
Every tankship equipped with a radio
installation on an international voyage
must have a Cargo Ship Safety Radio
Certificate. Each radio installation
must meet the requirements of the
Federal Communication Commission
and the International Convention for
Safety of Life at Sea.

(b) An Exemption certificate must
not be valid for longer than the period
of the certificate to which it refers.
(c) A Convention certificate may be
withdrawn, revoked, or suspended at
any time when it is determined that
the vessel is no longer in compliance
with applicable requirements. (See
§ 2.01–70 of this chapter for procedures
governing appeals.)

[USCG-1999–4976, 65 FR 6500, Feb. 9, 2000]

[USCG-1999–4976, 65 FR 6500, Feb. 9, 2000]

§ 31.40–25 Exemption
Certificate—T/
ALL.
(a) A tankship may be exempted by
the Commandant from complying with
certain requirements of the Convention
under his administration upon request
made in writing to him and transmitted via the Officer in Charge, Marine Inspection.
(b) When an exemption is granted to
a tankship by the Commandant under
and in accordance with the Convention,
an Exemption Certificate describing
such exemption shall be issued through
the appropriate Officer in Charge, Marine Inspection, in addition to other required certificates.

§ 31.40–45 American Bureau of Shipping—T/ALL.
(a) The American Bureau of Shipping, with its home office at ABS
Plaza, 16855 Northchase Drive, Houston, TX 77060, is hereby designated as
an organization duly authorized to
issue the Cargo Ship Safety Construction
Certificate to certain tankships on behalf of the United States of America as
provided in Regulation 12, chapter I, of
the International Convention for Safety of Life at Sea, 1974, and executive
order 12234 and the certificate shall be
subject to the requirements in this subpart. The American Bureau of Shipping
is authorized to place the official seal
of the United States of America on the
certificate. This designation and delegation to the American Bureau of Shipping shall be in effect from May 26,
1965, until terminated by proper authority and notice of cancellation is
published in the FEDERAL REGISTER.
(b) At the option of the owner or
agent of a tankship on an international
voyage and on direct application to the
American Bureau of Shipping, the Bureau may issue to such tankship a
Cargo Ship Safety Construction Certificate, having a period of validity of
not more than 60 months after
ascertaining that the tankship:
(1) Has met the applicable requirements of the Convention; and,
(2) Is currently classed by the Bureau
and classification requirements have
been dealt with to the satisfaction of
the Bureau.
(c) When the Bureau determines that
a tankship to which it has issued a
Cargo Ship Safety Construction Certificate no longer complies with the
Bureau’s applicable requirements for
classification, the Bureau shall immediately furnish to the Coast Guard all
relevant information, which will be

§ 31.40–30 Safety Management Certificate—T/ALL.
All tankships to which 33 CFR part 96
applies on an international voyage
must have a valid Safety Management
Certificate and a copy of their company’s valid Document of Compliance
certificate on board.
[CGD 95–073, 62 FR 67514, Dec. 24, 1997]

§ 31.40–35 Availability of certificates.
The Convention certificates shall be
on board the vessel and readily available for examination at all times.
[USCG-1999–4976, 65 FR 6500, Feb. 9, 2000]

§ 31.40–40 Duration of Convention certificates—T/ALL.
(a) The following certificates are
valid for a period of not more than 60
months.
(1) A Cargo Ship Safety Construction
Certificate.
(2) A Cargo Ship Safety Equipment
Certificate.
(3) A Safety Management Certificate.
(4) A Cargo Ship Safety Radio Certificate.

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Coast Guard, DHS

Pt. 32

used by the Coast Guard to determine
whether or not to withdraw, revoke or
suspend the Cargo Ship Safety Construction Certificate.
[CGFR 65–50, 30 FR 16662, Dec. 30,
amended by CGD 90–008, 55 FR 30660,
1990; CGD 96–041, 61 FR 50726, Sept.
USCG-2000–7790, 65 FR 58459, Sept. 29,

1965, as
July 26,
27, 1996;
2000]

PART 32—SPECIAL EQUIPMENT,
MACHINERY, AND HULL REQUIREMENTS

Subpart 32.25—General Alarm Systems
32.25–1 General alarm systems for tankships
and manned tank barges.

Subpart 32.30—Sound Powered Telephone,
Voice Tube, and Engine Order Telegraph Systems
32.30–1 Voice tubes or telephone equipment—T/ALL.
32.30–5 Engine order telegraph equipment—
T/ALL.

Subpart 32.35—Main and Auxiliary
Machinery

Subpart 32.01—General
Sec.
32.01–1

Incorporation by reference.

Subpart 32.02—Safety Requirements
32.02–1 Means of escape—T/ALL.
32.02–5 Communication
between
deckhouses—TB/OCLB.
32.02–10 Rails—TB/ALL.
32.02–15 Guards at dangerous places—TB/
ALL.

Subpart 32.05—Markings
32.05–1 Draft marks and draft indicating
systems—TB/ALL.
32.05–5 Vessel’s name on equipment—TB/
ALL.
32.05–10 Name of tankship—T/ALL.
32.05–15 Name of tank barge—B/ALL.

Subpart 32.15—Navigation Equipment
32.15–5 Whistles—T/ALL.
32.15–10 Sounding machines—T/OCL.
32.15–15 Anchors, Chains, and Hawsers—TB/
ALL.
32.15–30 Radar—T/OC.
32.15–35 Magnetic
Compass
and
Gyrocompass—T/OC.

Subpart 32.16—Navigation Bridge Visibility
32.16–1

32.35–1 Boilers and machinery—TB/ALL.
32.35–5 Installation of internal combustion
engines—TB/ALL.
32.35–10 Steering apparatus on tank vessels—TB/ALL.
32.35–15 Installation of air compressors on
tank vessels contracted for on or after
June 15, 1977—TB/ALL.

Subpart 32.40—Accommodations for
Officers and Crew
32.40–1 Application—TB/ALL.
32.40–5 Intent—T/ALL.
32.40–10 Location of crew spaces—T/ALL.
32.40–15 Construction—T/ALL.
32.40–20 Sleeping accommodations—T/ALL.
32.40–25 Washrooms and toilet rooms—T/
ALL.
32.40–30 Messrooms—T/ALL.
32.40–35 Hospital space—T/ALL.
32.40–40 Other spaces—T/ALL.
32.40–45 Lighting—T/ALL.
32.40–50 Heating and cooling—T/ALL.
32.40–55 Insect screens—T/ALL.
32.40–60 Crew accommodations on tankships
of less than 100 gross tons and manned
tank barges—T/ALL.
32.40–65 Crew accommodations on tankships
constructed before June 15, 1987—T/ALL.

Subpart 32.45—Electrical Installations
32.45–1

Navigation bridge visibility-T/ALL.

Installation and details.

Subpart 32.50—Pumps, Piping, and Hose
for Cargo Handling

Subpart 32.20—Equipment Installations
32.20–1 Equipment installations on vessels
during World War II—TB/ALL.
32.20–5 Pressure vacuum relief valves—TB/
ALL.
32.20–10 Flame arresters—TB/ALL.
32.20–20 Liquid level gaging—T/ALL.

32.50–1 Cargo pumps for tank vessels constructed on or after November 10, 1936—
TB/ALL.
32.50–3 Cargo discharge—TB/ALL.
32.50–5 Cargo pump gauges on tank vessels
constructed on or after November 10,
1936—TB/ALL.
32.50–10 Cargo pumps on tank vessels with
independent cargo tanks which were constructed prior to November 10, 1936—TB/
ALL.

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46 CFR Ch. I (10–1–14 Edition)

32.50–15 Cargo piping on tank vessels constructed on or after July 1, 1951—TB/
ALL.
32.50–20 Cargo piping for tank vessels constructed between November 10, 1936, and
July 1, 1951—TB/ALL.
32.50–25 Cargo pumps and piping on tank
vessels constructed prior to November 10,
1936—TB/ALL.
32.50–30 Cargo hose—TB/ALL.
32.50–35 Remote manual shutdown for internal combustion engine driven cargo
pump on tank vessels—TB/ALL.

Subpart 32.52—Bilge Systems
32.52–1 Bilge pumps on tank vessels constructed or converted on or after November 19, 1952—TB/ALL.
32.52–5 Bilge piping for pump rooms and adjacent cofferdams on tank vessels constructed or converted on or after November 19, 1952—TB/ALL.
32.52–10 Bilge pumps and piping on tank
vessels constructed or converted prior to
November 19, 1952—TB/ALL.

Subpart 32.53—Inert Gas System
32.53–1 Application—T/ALL.
32.53–3 Exemptions.
32.53–5 Operation—T/ALL.
32.53–10 General—T/ALL.
32.53–30 Positive pressure—T/ALL.

32.55–50 Ventilation of tankships that have
a keel laying date on or after January 1,
1975—T/ALL.

Subpart 32.56—Structural Fire Protection for
Tank Ships With a Keel Laying Date On
or After January 1, 1975
32.56–1 Application—T/ALL.
32.56–5 General—T/ALL.
32.56–10 Navigation positions—T/ALL.
32.56–15 Deck spills—T/ALL.
32.56–20 Insulation of exterior boundaries:
Superstructures and deckhouses—T/ALL.
32.56–21 Openings in exterior boundaries:
Accommodation, service, and control
spaces—T/ALL.
32.56–22 Openings in and insulation of
boundaries: Other spaces—T/ALL.
32.56–25 Category A machinery spaces: Windows and port lights—T/ALL.
32.56–30 Category A machinery spaces:
Bulkheads and decks—T/ALL.
32.56–35 Doors—T/ALL.
32.56–40 Category A machinery spaces: Insulation—T/ALL.
32.56–45 Draft stops—T/ALL.
32.56–50 Combustible veneers—T/ALL.
32.56–55 Control spaces—T/ALL.
32.56–60 Ventilation ducts—T/ALL.

Subpart 32.57—Structural Fire Protection for
Tank Vessels Contracted for On or
After January 1, 1963
32.57–1 Application—TB/ALL.
32.57–5 Definitions—TB/ALL.
32.57–10 Construction—TB/ALL.

Subpart 32.55—Ventilation and Venting
32.55–1 Ventilation of tank vessels constructed on or after July 1, 1951—TB/
ALL.
32.55–5 Ventilation of tank vessels constructed between November 10, 1936, and
July 1, 1951—TB/ALL.
32.55–10 Ventilation of tank vessels contracted prior to November 10, 1936—TB/
ALL.
32.55–15 Ventilation for hold spaces—TB/
ALL.
32.55–20 Venting of cargo tanks of tankships
constructed on or after July 1, 1951—T/
ALL.
32.55–25 Venting of cargo tanks of tank
barges constructed on or after July 1,
1951—B/ALL.
32.55–30 Venting of cargo tanks of tank vessels constructed between November 10,
1936, and July 1, 1951—TB/ALL.
32.55–35 Venting of cargo tanks on tank vessels constructed prior to November 10,
1936—TB/ALL.
32.55–45 Venting of cofferdams and void
spaces of tank vessels constructed on or
after November 10, 1936—TB/ALL.

Subpart
32.59—Minimum
Longitudinal
Strength and Plating Thickness Requirements for Unclassed Tank Vessels
That Carry Certail Oil Cargoes—TB/ALL
32.59–1 Minimum section modulus and plating thickness requirements—TB/ALL.

Subpart 32.60—Hull Requirements for Tank
Vessels Constructed On or After July 1,
1951
32.60–1 Scantlings, material, and workmanship—TB/ALL.
32.60–5 Subdivision of cargo space—TB/ALL.
32.60–10 Segregation of cargo; Grade A, B, C,
or D—TB/ALL.
32.60–15 Segregation of cargo; Grade E—TB/
ALL.
32.60–20 Pumprooms on tank vessels carrying Grade A, B, C, D and/or E liquid
cargo—TB/ALL.
32.60–25 Living quarters—TB/ALL.
32.60–30 Tank vessels with independent
tanks—TB/ALL.
32.60–35 Tank vessels carrying Grade A liquid cargo—TB/ALL.

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Coast Guard, DHS

§ 32.01–1

32.60–40 Construction and testing of cargo
tanks and bulkheads—TB/ALL.
32.60–45 Segregation of spaces containing
the emergency source of electric power—
TB/ALL.

Subpart 32.63—Hull and Cargo Tank Requirements for Tank Barges Constructed or Converted On or After July
1, 1964, and Carrying Certain Dangerous Bulk Cargoes

Subpart 32.80—Tank Barges Constructed of
Materials Other Than Steel or Iron
32.80–1

General requirements—B/ALL.

Subpart 32.85—Lamp and Paint Rooms
and Similar Compartments on Tankships
32.85–1 Fireproofing of lamp, oil and paint
rooms—T/ALL.

Subpart 32.90—Pilot Boarding Equipment
32.90–1

32.63–1 Application—B/ALL.
32.63–5 Barge hull classifications—B/ALL.
32.63–8 Alternative arrangements—B/ALL.
32.63–10 Rakes and coamings—B/ALL.
32.63–20 Hull structure—B/ALL.
32.63–25 Cargo tanks and supports—B/ALL.

Pilot boarding equipment.

AUTHORITY: 46 U.S.C. 2103, 3306, 3703, 3719;
E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p.
277; Department of Homeland Security Delegation No. 0170.1; Subpart 32.59 also issued
under the authority of Sec. 4109, Pub. L. 101–
380, 104 Stat. 515.

Subpart 32.65—Hull Requirements for Tank
Vessels Constructed On or After November 10, 1936, and Prior to July 1,
1951

SOURCE: CGFR 65–50, 30 FR 16671, Dec. 30,
1965, unless otherwise noted.

32.65–1 Application—TB/ALL.
32.65–5 Scantlings, material, and workmanship—TB/ALL.
32.65–10 Subdivision of cargo space—TB/
ALL.
32.65–15 Cofferdams—TB/ALL.
32.65–20 Pumprooms—TB/ALL.
32.65–25 Living quarters—TB/ALL.
32.65–30 Tank vessels with independent
tanks—TB/ALL.
32.65–35 Tank vessels carrying Grade A liquids—TB/ALL.
32.65–40 Construction and testing of cargo
tanks and bulkheads—TB/ALL.

§ 32.01–1 Incorporation by reference.
(a) Certain material is incorporated
by reference into this part with the approval of the Director of the Federal
Register in accordance with 5 U.S.C.
552(a). To enforce any edition other
than that specified in paragraph (b) of
this section, the Coast Guard must
publish notice of change in the FEDERAL REGISTER and make the material
available to the public. All approved
material is on file at the Coast Guard
Headquarters. Contact Commandant
(CG–ENG), Attn: Office of Design and
Engineering Systems, U.S. Coast Guard
Stop 7509, 2703 Martin Luther King Jr.
Avenue SE., Washington, DC 20593–7509.
You may also inspect this material at
the National Archives and Records Administration (NARA). For information
on the availability of this material at
NARA, call 202–741–6030, or go to: http://
www.archives.gov/federallregister/
codeloflfederallregulations/
ibrllocations.html. All material is
available from the sources indicated in
paragraph (b) of this section.
(b) American Bureau of Shipping
(ABS), ABS Plaza, 16855 Northchase
Drive, Houston, TX 77060, 281–877–5800,
http://www.eagle.org.
(1) Rules for Building and Classing
Steel Vessels, 1989, incorporation by
reference approved for §§ 32.15–15; 32.60–
10; 32.65–40.
(2) [Reserved]

Subpart 32.70—Hull Requirements for Steel
Hull Tank Vessels Constructed Prior to
November 10, 1936
32.70–1 Application—TB/ALL.
32.70–5 Hull
requirements;
general—TB/
ALL.
32.70–10 Cofferdams—TB/ALL.
32.70–15 Pumprooms—TB/ALL.
32.70–20 Pump-engine
compartment—TB/
ALL.
32.70–25 Cargo tanks—TB/ALL.

Subpart 32.75—Hull Requirements for Wood
Hull Tank Vessels Constructed Prior to
November 10, 1936
32.75–1 Application—TB/ALL.
32.75–5 Hull
requirements;
general—TB/
ALL.
32.75–10 Cargo tanks—TB/ALL.
32.75–15 Electric bonding and grounding for
tanks—TB/ALL.
32.75–20 Hold spaces and bulkheads—TB/
ALL.

Subpart 32.01—General

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§ 32.02–1

46 CFR Ch. I (10–1–14 Edition)

(c) ASTM International, 100 Barr
Harbor Drive, P.O. Box C700, West
Conshohocken, PA 19428–2959, 877–909–
2786, http://www.astm.org.
(1) ASTM D4986–98, Standard Test
Method for Horizontal Burning Characteristics of Cellular Polymeric Materials, incorporation by reference approved for § 32.57–10.
(2) ASTM F1273–91 (Reapproved 2007),
Standard Specification for Tank Vent
Flame Arresters (approved December 1,
2007), incorporation by reference approved for § 32.20–10.
[CGD88–032, 56 FR 35820, July 29, 1991, as
amended by CGD 95–072, 60 FR 50461, Sept. 29,
1995; CGD 96–041, 61 FR 50727, Sept. 27, 1996;
CGD 97–057, 62 FR 51043, Sept. 30, 1997; USCG–
1999–5151, 64 FR 67177, Dec. 1, 1999; USCG2000–7790, 65 FR 58459, Sept. 29, 2000; USCG–
2009–0702, 74 FR 49227, Sept. 25, 2009; USCG–
2012–0866, 78 FR 13249, Feb. 27, 2013; USCG–
2013–0671, 78 FR 60146, Sept. 30, 2013]

Subpart 32.02—Safety
Requirements
§ 32.02–1 Means of escape—T/ALL.
On all tankships where the plans and
arrangements will possibly permit, all
passageways leading to living quarters,
or places where anyone may be regularly employed, shall be provided with
not less than two avenues of escape so
located that if one of such avenues is
not available another may be. The locality and arrangement of such additional means of escape shall be determined by the inspectors as will in their
judgment best carry out the purpose
for which this provision was made.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965. Redesignated by CGD 88–032, 56 FR 35820, July 29,
1991]

§ 32.02–5 Communication
between
deckhouses—TB/OCLB.
On all tank vessels where the distance between deckhouses is more than
46 meters (150 feet), a fixed means of facilitating
communication
between
both ends of the vessel, such as a raised
fore and aft bridge or side tunnels,
must be provided. Previously approved
arrangements may be retained so long
as they are maintained in satisfactory
condition to the satisfaction of the Officer in Charge, Marine Inspection.
[CGD 95–027, 61 FR 25997, May 23, 1996]

§ 32.02–10 Rails—TB/ALL.
(a) All tank vessels, except unmanned tank barges, contracted for on
or after July 1, 1969, shall have efficient guard rails or bulwarks on decks
and bridges. The height of rails or bulwarks shall be at least 391⁄2 inches from
the deck except that where this height
would interfere with the normal operation of the vessel, a lesser height may
be approved by the Commandant. At
exposed peripheries of the freeboard
and superstructure decks the rails
shall be in at least three courses including the top. The opening below the
lowest course shall not be more than 9
inches. The courses shall not be more
than 15 inches apart. In the case of
ships with rounded gunwales, the guard
rail supports shall be placed on the flat
of the deck. On other decks and bridges
the rails shall be in at least two
courses, including the top, approximately evenly spaced. All rails shall
consist of solid or tubular sections or
chains or wire rope or a combination
thereof.
(b) Where it can be shown to the satisfaction of the Commandant that a
vessel is engaged exclusively on voyages of a sheltered nature, the provisions of paragraph (a) of this section
may be relaxed.
(c) Tank vessels contracted for prior
to July 1, 1969, except unmanned tank
barges, assigned a deeper load line
under part 42 of subchapter E (Load
Lines) of this chapter shall have efficient guard rails or bulwarks as required by paragraph (a) of this section.
Otherwise, existing rails and bulwarks
previously approved will be considered
satisfactory so long as they are maintained in good condition. Minor repairs
and alterations may be made to the
same standards as the original construction.
(d) All tank vessels in ocean and
coastwise service, except unmanned
tank barges, constructed on or after
June 15, 1987, must have suitable storm
rails installed in all passageways and
at the deckhouse sides on weather
decks where persons on board might
have normal access. Storm rails must
be installed on both sides of passageways which are six feet or more in
width. Tank vessels to which this paragraph applies constructed prior to June

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Coast Guard, DHS

§ 32.05–15

15, 1987, may retain previously accepted
or approved installations so long as
they are maintained in good condition
to the satisfaction of the Officer in
Charge, Marine Inspection.
[CGFR 69–72, 34 FR 17481, Oct. 29, 1969, as
amended by CGD 84–073; 52 FR 18362, May 15,
1987; 52 FR 22751, June 15, 1987. Redesignated
by CGD 88–032, 56 FR 35820, July 29, 1991]

§ 32.02–15 Guards
places—TB/ALL.

at

dangerous

All exposed and dangerous places
such as gears and machinery shall be
properly protected with covers, guards
or rails in order that the danger of accidents may be minimized. On vessels
equipped with radio communication,
the lead-ins shall be efficiently incased
or insulated to insure against accidental shock. Such lead-ins shall be located so as not to interfere with the
launching of lifeboats and life rafts.
[CGFR 65–50, 30 FR 16671, Dec 30, 1965. Redesignated by CGD 88–032, 56 FR 35820, July 29,
1991]

(e) Draft marks must be separated so
that the projections of the marks onto
a vertical plane are of uniform height
equal to the vertical spacing between
consecutive marks.
(f) Draft marks must be painted in
contrasting color to the hull.
(g) In cases where draft marks are obscured due to operational constraints
or by protrusions, the vessel must be
fitted with a reliable draft indicating
system from which the bow and stern
drafts can be determined.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGD 89–037, 57 FR 41821, Sept. 11,
1992]

§ 32.05–5 Vessel’s name
ment—TB/ALL.

§ 32.05–1 Draft marks and draft indicating systems—TB/ALL.
(a) All vessels must have draft marks
plainly and legibly visible upon the
stem and upon the sternpost or
rudderpost or at any place at the stern
of the vessel as may be necessary for
easy observance. The bottom of each
mark must indicate the draft.
(b) The draft must be taken from the
bottom of the keel to the surface of the
water at the location of the marks.
(c) In cases where the keel does not
extend forward or aft to the location of
the draft marks, due to raked stem or
cutaway skeg, the datum line from
which the drafts shall be taken, shall
be obtained by projecting the line of
the bottom of the keel forward or aft,
as the case may be, to the location of
the draft marks.
(d) In cases where a vessel may have
a skeg or other appendage extending
locally below the line of the keel, the
draft at the end of the vessel adjacent
to such appendage shall be measured to
a line tangent to the lowest part of
such appendage and parallel to the line
of the bottom of the keel.

Name of tankship—T/ALL.

Every tankship shall have the name
marked upon each bow and upon the
stern, and the home port shall also be
marked upon the stern. The name shall
be in a light color on a dark ground, or
in a dark color on a light ground, and
shall be distinctly visible. The smallest
letters used shall be not less than 4
inches in size. In addition, every tankship shall have her name conspicuously
displayed in distinct plain letters, of
not less than 6 inches in size, on each
outer side of the pilothouse.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGFR 72–104R, 37 FR 14233, July
18, 1972]

§ 32.05–15

Name of tank barge—B/ALL.

Every tank barge shall have its name
or number carved, punch-marked, or
welded on the main beam, inside the
cargo hatch, or other suitable permanent part of the vessel’s structure for
the purpose of identification. The vessel’s name or number shall be so displayed at the highest part of the vessel’s hull or permanent structure that

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equip-

The equipment of all tank vessels,
such as fire hose, fire axes, lifeboats,
life rafts, life preservers, and lifeboats,
shall be painted or branded with the
name of the vessel upon which they are
used.
§ 32.05–10

Subpart 32.05—Markings

on

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§ 32.15–5

46 CFR Ch. I (10–1–14 Edition)

the name or number can be seen from
either side.
[CGFR 65–50, 30 FR 16657, Dec. 30, 1965, as
amended by CGFR 72–104R, 37 FR 14233, July
18, 1972]

Subpart 32.15—Navigation
Equipment
§ 32.15–5

Whistles—T/ALL.

(a) [Reserved]
(b) On tankships contracted for on
and after November 19, 1955 means
shall be provided to operate the whistle
from a position adjacent to the main
steering station and from the steering
station on top of the pilothouse where
such steering station is fitted. Details
of the whistle operating devices shall
meet the requirements of subchapter J
(Electrical Engineering) of this chapter.
NOTE: Appendix A in 33 CFR subchapter D
contains the International Regulations for
Preventing Collisions at Sea, 1972.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGD 74–125A, 47 FR 15230, Apr. 8,
1982; CGD 82–036, 48 FR 654, Jan. 6, 1983]

§ 32.15–10

Sounding machines—T/OCL.

All mechanically propelled vessels in
ocean or coastwise service of 500 gross
tons and over, and all mechanically
propelled vessels in of 500 gross tons
and over and certificated for service on
the River St. Lawrence eastward of the
lower exit of the St. Lambert Lock at
Montreal, Canada, must be fitted with
an efficient electronic deep-sea sounding apparatus.
[CGD 95–027, 61 FR 25997, May 23, 1996]

§ 32.15–15 Anchors,
Hawsers—TB/ALL

Chains,

and

(a) Application. Use the following
table to determine which provisions of
this section apply to you:
If you own . . .

And . . .

Then . . .

(1) A tankship or
a manned seagoing barge.

It was constructed
before June 15,
1987,

(2) A tankship or
a manned seagoing barge.

It was constructed
on or after June
15, 1987,

It must meet the requirements of
paragraphs (d)
and (f).
It must meet all the
requirements of
this section except paragraphs
(d) and (e).

If you own . . .

And . . .

(3) An unmanned
barge equipped
with anchors.

(b) Ocean, Coastwise, or Great Lakes
Service. Tankships in ocean, coastwise,
or Great Lakes service and manned
seagoing barges must be fitted with anchors, chains and hawsers in general
agreement with the standards established by the American Bureau of Shipping. The current standards of other
recognized classification societies may
also be accepted upon approval by the
Commandant.
(c) Lakes, Bays, and Sounds, or River
Service. Tankships in lakes, bays, and
sounds, or river service must be fitted
with such ground tackle and hawsers as
deemed necessary by the Officer in
Charge, Marine Inspection, depending
upon the size of the tankship and the
waters on which it operates.
(d) Tankships and Barges Constructed
Before June 15, 1987. For each tankship
or manned seagoing barge constructed
before June 15, 1987, except a barge
specified in paragraph (e) of this section, the equipment previously accepted or approved is satisfactory for the
same service so long as it is maintained in good condition to the satisfaction of the Officer in Charge, Marine
Inspection (OCMI). If the service of the
vessel changes, the OCMI will evaluate
the suitability of the equipment.
(e) Barges Equipped with Anchors to
Comply with 33 CFR 155.230(b)(1). Each
barge equipped with an anchor, to comply with 33 CFR 155.230(b)(1), must be
fitted with an operable anchoring system that includes a cable or chain, and
a winch or windlass. All components of
the system must be in general conformity with the standards issued by a
recognized classification society. Inquiries concerning classification society standards for anchoring systems
should be directed to Commandant
(CG–ENG–3), Attn: Systems Engineering Division, U.S. Coast Guard Stop
7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 20593–7509;
telephone 202–372–1378 or fax 202–372–
1925. If the Coast Guard finds that your
anchoring system is not in general conformity with an approved standard, it

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It must meet the requirements of
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Coast Guard, DHS

§ 32.16–1

will advise you how to bring it into
such conformity.
(f) Operation and Performance. Each
anchor, exposed length of chain or
cable, and hawser must be visually inspected before the barge begins each
voyage. The anchor must be stowed so
that it is ready for immediate use in an
emergency. The barge must have a
working means for releasing the anchor that can be operated safely by one
or two persons.
[CGD 84–073, 52 FR 18362, May 15, 1987; 52 FR
22751, June 15, 1987, as amended by USCG
1998–4443, 63 FR 71764, Dec. 30, 1998; USCG
1998–4443, 65 FR 31813, May 19, 2000; USCG–
2006–25697, 71 FR 55746, Sept. 25, 2006; USCG–
2009–0702, 74 FR 49227, Sept. 25, 2009; USCG–
2013–0671, 78 FR 60147, Sept. 30, 2013]

§ 32.15–30 Radar—T/OC.
All tankships of 1,600 gross tons and
over in ocean or coastwise service must
be fitted with a marine radar system
for surface navigation. Facilities for
plotting radar readings must be provided on the bridge.
[CGD 74–074, 42 FR 5963, Jan. 31, 1977]

§ 32.15–35 Magnetic Compass and Gyrocompass—T/OC.
(a) All tankships in ocean or coastwise service must be fitted with a magnetic compass.
(b) All tankships of 1,600 gross tons
and over in ocean or coastwise service
must be fitted with a gyrocompass in
addition to the magnetic compass.
(c) Each tankship must have an illuminated repeater for the gyrocompass
required under paragraph (b) that is at
the main steering stand unless the gyrocompass is illuminated and is at the
main steering stand.
[CGD 74–074, 42 FR 5963, Jan. 31, 1977]

Subpart 32.16—Navigation Bridge
Visibility
§ 32.16–1 Navigation bridge visibilityT/ALL.
Each tankship which is 100 meters
(328 feet) or more in length and contracted for on or after September 7,
1990, must meet the following requirements:
(a) The field of vision from the navigation bridge, whether the vessel is in

a laden or unladen condition, must be
such that:
(1) From the conning position, the
view of the sea surface is not obscured
forward of the bow by more than the
lesser of two ship lengths or 500 meters
(1,640 feet) from dead ahead to 10 degrees on either side of the vessel. Within this arc of visibility any blind sector
caused by cargo, cargo gear, or other
permanent obstruction must not exceed 5 degrees.
(2) From the conning position, the
horizontal field of vision extends over
an arc from at least 22.5 degrees abaft
the beam on one side of the vessel,
through dead ahead, to at least 22.5 degrees abaft the beam on the other side
of the vessel. Blind sectors forward of
the beam caused by cargo, cargo gear,
or other permanent obstruction must
not exceed 10 degrees each, nor total
more than 20 degrees, including any
blind sector within the arc of visibility
described in paragraph (a)(1) of this
section.
(3) From each bridge wing, the field
of vision extends over an arc from at
least 45 degrees on the opposite bow,
through dead ahead, to at least dead
astern.
(4) From the main steering position,
the field of vision extends over an arc
from dead ahead to at least 60 degrees
on either side of the vessel.
(5) From each bridge wing, the respective side of the vessel is visible forward and aft.
(b) Windows fitted on the navigation
bridge must be arranged so that:
(1) Framing between windows is kept
to a minimum and is not installed immediately in front of any work station.
(2) Front windows are inclined from
the vertical plane, top out, at an angle
of not less than 10 degrees and not
more than 25 degrees;
(3) The height of the lower edge of
the front windows is limited to prevent
any obstruction of the forward view
previously described in this section;
and
(4) The height of the upper edge of
the front windows allows a forward
view of the horizon at the conning position, for a person with a height of eye
of 1.8 meters (71 inches), when the vessel is at a forward pitch angle of 20 degrees.

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§ 32.20–1

46 CFR Ch. I (10–1–14 Edition)

(c) Polarized or tinted windows must
not be fitted.
[CGD 85–099, 55 FR 32247, Aug. 8, 1990]

Subpart 32.20—Equipment
Installations
§ 32.20–1 Equipment installations on
vessels during World War II—TB/
ALL.
Boilers, pressure vessels, machinery,
piping, electrical and other installations, including lifesaving, firefighting
and other safety equipment, installed
on vessels during the Unlimited National Emergency declared by the
President on May 27, 1941, and prior to
the termination of title V of the Second War Powers Act, as extended (sec.
501, 56 Stat. 180, 50 U.S.C. 635), which do
not fully meet the detailed requirements of the regulations in this chapter, may be continued in service if
found to be satisfactory by the Commandant for the purpose intended. In
each instance prior to final action by
the Commandant, the Officer in
Charge, Marine Inspection, shall notify
Headquarters of the facts in the case,
together with recommendations relative to suitability for retention.
§ 32.20–5 Pressure
vacuum
relief
valves—TB/ALL.
The pressure vacuum relief valve
shall be of a type and size approved by
the Commandant for the purpose intended. For specifications and procedures re approval, see subpart 162.017 of
subchapter Q (Specifications) of this
chapter.
§ 32.20–10 Flame arresters—TB/ALL.
Flame arresters must be of a type
and size suitable for the purpose intended and meet ASTM F 1273 (incorporated by reference, see § 32.01–1).
[CGD 88–032, 56 FR 35821, July 29, 1991, as
amended by USCG-2000–7790, 65 FR 58459,
Sept. 29, 2000]

§ 32.20–20 Liquid level gaging—T/ALL.
On tankships, the construction or
conversion of which is started on or
after July 1, 1951, a method for determining the level of the liquid in a
cargo tank without opening ullage
holes, cargo hatches, or Butterworth

plates, shall be provided on all tankships certificated for the carriage of
Grade A liquids: Provided, That ullage
holes fitted with sounding pipes tightly
secured to the underside of the tank
tops, open at the bottom, and extending to within 18 inches or less of the
bottom of the tank shall be considered
as complying with the foregoing requirement.

Subpart 32.25—General Alarm
Systems
§ 32.25–1 General alarm systems for
tankships and manned tank barges.
A general alarm system must be installed on tankships and manned tank
barges which meets the requirements
in subchapter J (Electrical Engineering
Regulations) of this chapter.
[CGD 74–125A, 47 FR 15230, Apr. 8, 1982]

Subpart 32.30—Sound Powered
Telephone, Voice Tube, and
Engine Order Telegraph Systems
§ 32.30–1 Voice tubes or telephone
equipment—T/ALL.
Each tankships must have communication equipment which meets the
requirements in subchapter J (Electrical Engineering Regulations) of this
chapter.
[CGD 74–125A, 47 FR 15230, Apr. 8, 1982]

§ 32.30–5 Engine
order
telegraph
equipment—T/ALL.
Each tankship must have an engine
order telegraph system which meets
the requirements in subchapter J
(Electrical Engineering Regulations) of
this chapter.
[CGD 74–125A, 47 FR 15230, Apr. 8, 1982]

Subpart 32.35—Main and Auxiliary
Machinery
§ 32.35–1 Boilers and machinery—TB/
ALL.
Boilers, main and auxiliary machinery, and piping systems shall conform
to the requirements of subchapter F
(Marine Engineering) of this chapter,
except as otherwise provided for in this
subchapter.

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§ 32.40–10

§ 32.35–5 Installation of internal combustion engines—TB/ALL.
Each internal combustion engine located on the weather deck shall be provided with a ventilated metal hood or,
where space permits, with a well-ventilated metal housing of sufficient size to
allow for proper operation and maintenance.

section in which cargo vapors or gases
may be present.

§ 32.35–10 Steering apparatus on tank
vessels—TB/ALL.
Tank vessels shall be provided with
steering apparatus as required by part
58 of subchapter F (Marine Engineering) of this chapter.

SOURCE: CGD 95–027, 61 FR 25997, May 23,
1996, unless otherwise noted.

[CGFR 68–82, 33 FR 18805, Dec. 18, 1968]

§ 32.35–15 Installation of air compressors on tank vessels contracted for
on or after June 15, 1977—TB/ALL.
No tank vessel, except an oil pollution clean-up vessel, that carries petroleum products grades A thru D contracted for on or after June 15, 1977
may have an air compressor on an air
compressor intake installed in any of
the following cargo areas:
(a) A cargo handling room.
(b) An enclosed space containing
cargo piping.
(c) A space in which cargo hose is
stowed.
(d) A space adjacent to a cargo tank
or cargo tank hold.
(e) A space within three meters of
any of the following:
(1) A cargo tank opening.
(2) An outlet for cargo gas or vapor.
(3) A cargo pipe flange.
(4) A cargo valve.
(5) An entrance or ventilation opening to a cargo handling room.
(f) Except for tank barges, the cargo
deck space. For the purpose of this
paragraph, cargo deck space means the
volume bounded by the open deck over
the cargo tank block, including all ballast tanks within the cargo tank block,
extending to the full width of the vessel, plus three meters (about 10 feet)
fore and aft of the cargo tank block
and up to a height of 2.4 meters (about
8 feet) above the deck.
(g) An enclosed space having an opening into a location described in paragraphs (a)–(f) of this section.
(h) A location similar to those described in paragraphs (a)–(g) of this

[CGD 75–017, 42 FR 25735, May 19, 1977, as
amended by CGD 75–017, 42 FR 45677, Sept. 12,
1977]

Subpart 32.40—Accommodations
for Officers and Crew

§ 32.40–1

Application—TB/ALL.

(a) The provisions of this subpart, except § 32.40–60 and § 32.40–65, apply to all
tankships of 100 gross tons and over
constructed on or after June 15, 1987.
(b) Tankships of less than 100 gross
tons and manned tank barges must
meet the requirements of § 32.40–60.
(c) Tankships of 100 gross tons and
over constructed prior to June 15, 1987,
must meet the requirements of § 32.40–
65.
§ 32.40–5

Intent—T/ALL.

The accommodations provided for officers and crew on all vessels must be
securely constructed, properly lighted,
heated, drained, ventilated, equipped,
located, arranged and insulated from
undue noise, heat and odors.
§ 32.40–10
ALL.

Location of crew spaces—T/

(a) Crew quarters must not be located
farther forward in the vessel than a
vertical plane located at 5 percent of
the vessel’s length abaft the forward
side of the stem at the designed summer load water line. However, for vessels in other than ocean or coastwise
service, this distance need not exceed
8.5 meters (28 feet). For the purposes of
this paragraph, the vessel’s length
must be as defined in § 43.15–1 of subchapter E (Load Lines) of this chapter.
Unless approved by the Commandant,
no section of the deck head of the crew
spaces may be below the deepest load
line.
(b) There must be no direct communication, except through solid, close
fitted doors or hatches between crew
spaces and chain lockers, or machinery
spaces.

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§ 32.40–15

46 CFR Ch. I (10–1–14 Edition)

§ 32.40–15 Construction—T/ALL.
All crew spaces are to be constructed
and arranged in a manner suitable to
the purpose for which they are intended and so that they can be kept in
a clean, workable and sanitary condition.
§ 32.40–20 Sleeping accommodations—
T/ALL.
(a) Where practicable, each licensed
officer shall be provided with a separate stateroom.
(b) Sleeping accommodations for the
crew must be divided into rooms, no
one of which may berth more than 4
persons.
(c) Each room must be of such size
that there is at least 2.78 square meters
(30 square feet) of deck area and a volume of at least 5.8 cubic meters (210
cubic feet) for each person accommodated. The clear head room must not
be less than 190 centimeters (75 inches).
In measuring sleeping accommodations
any furnishings contained therein for
the use of the occupants are not to be
deducted from the total volume or
from the deck area.
(d) Each person shall have a separate
berth and not more than one berth may
be placed above another. The berth
must be composed of materials not
likely to corrode. The overall size of a
berth must not be less than 68 centimeters (27 inches) wide by 190 centimeters (75 inches) long, except by special permission of the Commandant.
Where two tiers of berths are fitted,
the bottom of the lower berth must not
be less than 30 centimeters (12 inches)
above the deck. The berths must not be
obstructed by pipes, ventilating ducts,
or other installations.
(e) A locker must be provided for
each person accommodated in a room.
§ 32.40–25 Washrooms
and
toilet
rooms—T/ALL.
(a) At least 1 toilet, 1 washbasin, and
1 shower or bathtub must be provided
for each 8 members or portion thereof
in the crew who do not occupy sleeping
accommodations to which private or
semi-private facilities are attached.
(b) The toilet rooms and washrooms
must be located convenient to the
sleeping quarters of the crew to which
they are allotted but must not open di-

rectly into such quarters except when
they are provided as private or semiprivate facilities.
(c) All washbasins, showers, and
bathtubs must be equipped with adequate plumbing, including hot and cold
running water. All toilets must be installed with adequate plumbing for
flushing.
(d) At least 1 washbasin must be
fitted in each toilet room, except
where private or semi-private facilities
are provided and washbasins are installed in the sleeping rooms.
(e) Where more than 1 toilet is located in a space or compartment, each
toilet must be separated by partitions.
§ 32.40–30

Messrooms—T/ALL.

(a) Messrooms must be located as
near to the galley as is practicable except where the messroom is equipped
with a steam table.
(b) Each messroom must seat the
number of persons expected to eat in
the messroom at one time.
§ 32.40–35

Hospital space—T/ALL.

(a) Each vessel which in the ordinary
course of its trade makes voyages of
more than 3 days duration between
ports and which carries a crew of 12 or
more, must be provided with a hospital
space. This space must be situated with
due regard to the comfort of the sick so
that they may receive proper attention
in all weathers.
(b) The hospital must be suitably separated from other spaces and must be
used for the care of the sick and for no
other purpose.
(c) The hospital must be fitted with
berths in the ratio of 1 berth to every
12 members of the crew or portion
thereof who are not berthed in single
occupancy rooms, but the number of
berths need not exceed 6.
(d) The hospital must have a toilet,
washbasin, and bathtub or shower conveniently situated. Other necessary
suitable equipment such as a clothes
locker, a table, and a seat must be provided.
§ 32.40–40

Other spaces—T/ALL.

Each vessel must have—
(a) Sufficient facilities where the
crew may wash and dry their own

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Coast Guard, DHS

§ 32.50–5

clothes, including at least 1 sink supplied with hot and cold fresh water;
(b) Recreation spaces; and
(c) A space or spaces of adequate size
available on an open deck to which the
crew has access when off duty.

condition to the satisfaction of the Officer in Charge, Marine Inspection.

§ 32.40–45 Lighting—T/ALL.
Each berth must have a light.

§ 32.45–1

§ 32.40–50 Heating and cooling—T/ALL.
(a) All manned spaces must be adequately heated and cooled in a manner
suitable to the purpose of the space.
(b) The heating and cooling system
for accommodations must be capable of
maintaining a temperature of 21 °C (70
°F) under normal operating conditions
without curtailing ventilation.
(c) Radiators and other heating apparatus must be so placed and shielded,
where necessary, to avoid risk of fire,
danger or discomfort to the occupants.
Pipes leading to radiators or heating
apparatus must be insulated where
those pipes create a hazard to persons
occupying the space.
§ 32.40–55 Insect screens—T/ALL.
Provisions shall be made to protect
the crew quarters against the admission of insects.
§ 32.40–60 Crew accommodations on
tankships of less than 100 gross
tons and manned tank barges—TB/
ALL.
(a) The crew accommodations on all
tankships of less than 100 gross tons
and all manned tank barges must have
sufficient size and equipment, and be
adequately constructed to provide for
the protection of the crew in manner
practicable for the size, facilities, and
service of the tank vessel.
(b) The crew accommodations must
be consistent with the principles underlying the requirements for crew accommodations of tankships of 100 gross
tons or more.
§ 32.40–65 Crew accommodations on
tankships constructed before June
15, 1987—T/ALL.
All tankships of 100 gross tons and
over constructed before June 15, 1987,
may retain previously accepted or approved installations and arrangements
so long as they are maintained in good

Subpart 32.45—Electrical
Installations
Installation and details.

The installation of all electrical engineering or interior communications
systems, together with the details of
design, construction, and installation,
must meet the requirements of subchapter J (Electrical Engineering Regulations) of this chapter.
[CGD 74–125A, 47 FR 15230, Apr. 8, 1982]

Subpart 32.50—Pumps, Piping,
and Hose for Cargo Handling
§ 32.50–1 Cargo pumps for tank vessels
constructed on or after November
10, 1936—TB/ALL.
On all tank vessels, the construction
or conversion of which is started on or
after November 10, 1936, the cargo
pumps shall be designed and installed
to minimize the danger of sparking.
Special care shall be exercised in the
design of packing spaces in order to secure ample depth and accessibility of
glands. Where cargo pump shafts pierce
gastight bulkheads, stuffing boxes with
readily accessible gastight glands shall
be provided.
§ 32.50–3

Cargo discharge—TB/ALL.

(a) Pumps or other acceptable means
shall be used to discharge cargo from
gravity type cargo tanks vented at
gauge pressures of 4 pounds per square
inch or less.
(b) The use of compressed air as the
primary means of discharging cargo
from such tanks is prohibited.
§ 32.50–5 Cargo pump gauges on tank
vessels constructed on or after November 10, 1936—TB/ALL.
(a) [Reserved]
(b) A pressure gage shall be installed
for each pump discharge, and it shall
be located at a point visible with respect to the pump controls.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGD 73–254, 40 FR 40163, Sept. 2,
1975]

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§ 32.50–10

46 CFR Ch. I (10–1–14 Edition)

§ 32.50–10 Cargo pumps on tank vessels with independent cargo tanks
which were constructed prior to
November 10, 1936—TB/ALL.
(a) Cargo pumps on tank vessels, the
construction or conversion of which
was started prior to November 10, 1936,
may be located in a hold space containing independent cargo tanks or on
deck. If the pump driving unit is of the
type permitted in cargo pumprooms, it
also may be located in the hold space.
If other types of driving units are used,
they shall be located on deck or in an
engine compartment. If the pump drive
shaft passes through decks or bulkheads into a hold space or pumproom,
it shall be provided with suitable stuffing boxes at such points.
§ 32.50–15 Cargo piping on tank vessels
constructed on or after July 1,
1951—TB/ALL.
(a) On all tank vessels, the construction or conversion of which is started
on or after July 1, 1951, the cargo piping shall be:
(1) A fixed cargo piping system shall
be installed on a tank vessel carrying
Grade A, B, or C cargo. The piping
shall be arranged so as to avoid excessive stresses at the joints. For sizes exceeding 2 inches in diameter, flanged,
welded, or other approved types of
joints shall be employed. Packing material shall be suitable for the cargo
carried. Connections at bulkheads shall
be made so that the plating does not
form part of a flanged joint. Piping
may be carried through bunker spaces
and deep tanks provided it is run
through a pipe tunnel. The tunnel may
be omitted where the pipe is extra
heavy, all joints are welded, and bends
are installed to provide for expansion
and contraction.
(2) Tank vessels carrying only Grades
D and E cargo may use a portable piping system in lieu of a fixed piping system meeting the requirements of paragraph (a)(1) of this section, provided:
(i) The hose complies with 33 CFR
154.500 or the portable piping complies
with part 56 of this chapter;
(ii) The connections comply with 33
CFR 156.130;
(iii) A shutoff valve is at or near the
point of entry into the tank;

(iv) Except for the carriage of animal
fats and vegetable oils, the system has
a closure which forms a vapor-tight
seal on the tank opening through
which the cargo is transferred, is
bolted or dogged in place, and has the
hose and drop line connected to it; and
(v) Except for the carriage of animal
fats and vegetable oils, the system has
a metallic drop line which complies
with 46 CFR 153.282.
(3) Cargo piping shall not pass
through spaces containing machinery
where sources of vapor ignition are
normally present: Provided, That, in
special cases the Commandant may
permit the piping to pass through such
spaces if Grade E liquids only are involved.
(b) Valve operating rods in cargo
tanks shall be solid, except that tank
barges having plug cocks inside the
cargo tanks may have operating rods of
extra heavy pipe with the annular
space between the lubricant tube and
the pipe wall sealed with a nonsoluble
material to prevent penetration of the
cargo. Valve operating rods shall be of
ample size, well guided and supported,
and attached to the valve stems in a
manner so as to prevent the operating
rods from working loose. Where the operating rods pass through a deck, gastight stuffing boxes shall be fitted. The
leads of operating rods shall be as direct as possible. Valves shall be of suitable design for the intended service.
(c) All cargo loading and discharge
hose connections shall be fitted with
valves or blind flanges.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGD 80–009, 48 FR 36458, Aug. 11,
1983]

§ 32.50–20 Cargo piping for tank vessels constructed between November
10, 1936, and July 1, 1951—TB/ALL.
(a) On tank vessels, the construction
or conversion of which is started on or
after November 10, 1936, and prior to
July 1, 1951, the piping shall be arranged so as to avoid excessive stresses
at the joints. For sizes exceeding 2
inches in diameter, flanged, welded, or
other approved types of joints shall be
employed. Packing material shall be
suitable for the cargo carried. Connections at bulkheads shall be made so
that the plating does not form part of

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§ 32.52–5

a flanged joint. Piping may be carried
through bunker spaces and deep tanks
provided it is run through a pipe tunnel. The tunnel may be omitted where
the pipe is extra heavy, all joints are
welded, and bends are installed to provide for expansion and contraction.
(b) Cargo piping shall not pass
through spaces containing machinery
where sources of vapor ignition are
normally present: Provided, That in
special cases the Commandant may
permit the piping to pass through such
spaces if Grade E liquids only are involved.
(c) Valve operating rods in the cargo
tanks shall be solid and of ample size,
well guided and supported, and attached to the valve stems in a manner
to guard against their working loose.
Where such valve rods pass through the
deck, gas tight stuffing boxes shall be
fitted. The leads of valve rods shall be
as direct as possible. All valves and fittings shall be of material, design, and
manufacture for the intended service
on the cargo system; either rising or
nonrising stem valves may be used.

§ 32.50–35 Remote manual shutdown
for internal combustion engine
driven cargo pump on tank vessels—TB/ALL.

§ 32.50–25 Cargo pumps and piping on
tank vessels constructed prior to
November 10, 1936—TB/ALL.

The number and arrangement of bilge
pumps on each tank vessel shall conform to the requirements of subchapter
F (Marine Engineering) of this chapter,
except as hereinafter provided in this
subpart.

On tank vessels, the construction or
conversion of which was started prior
to November 10, 1936, cargo pumps and
piping which do not fully comply with
the regulations in this subchapter shall
be made as nearly equal to the requirements for tank vessels constructed between November 10, 1936, and July 1,
1951, as is necessary in the interest of
safety. Cargo pipe lines may pass
through cargo pump engine compartments provided no cargo valves are located therein.
§ 32.50–30

Cargo hose—TB/ALL.

Cargo hose carried on tank vessels
must be suitable for oil service and designed to withstand the pressure of the
shutoff head of the cargo pump or
pump relief valve setting, less static
head, but in no case less than 150
pounds per square inch.
NOTE: For additional requirements concerning cargo hose, see 33 CFR 154.500, 155.800
and 156.170.
[CGD 80–009, 48 FR 36458, Aug. 11, 1983]

(a) Any tank vessel which is equipped
with an internal combustion engine
driven cargo pump on the weather deck
shall be provided with a minimum of
one remote manual shutdown station,
conspicuously marked, and located at
the midpoint of such vessel, or 100 feet
from the engine, whichever is the more
practical. The remote quick acting
manual shutdown shall be installed on
the engine so as to provide a quick and
effective means of stopping the engine
(such as by cutting off the intake air).
(b) This regulation applies to all installations of this type on tank vessels,
but for such installations now on existing tankships at the date of next biennial inspection or October 1, 1963,
whichever occurs later.

Subpart 32.52—Bilge Systems
§ 32.52–1 Bilge pumps on tank vessels
constructed or converted on or
after November 19, 1952—TB/ALL.

§ 32.52–5 Bilge piping for pump rooms
and adjacent cofferdams on tank
vessels constructed or converted on
or after November 19, 1952—TB/
ALL.
(a) Provisions shall be made for removing drainage from the pumproom
bilges and adjacent cofferdams. A separate bilge pump, ejector, or bilge suction from a cargo pump or cargo stripping pump may be provided for this
purpose. The bilge pump shall not be
located in nor shall the piping pass
through spaces containing machinery
where sources of vapor ignition are
normally present.
(b) Where a bilge suction is provided
from a cargo or stripping pump, a
stopcheck valve shall be fitted in the
suction branch, and an additional stop
valve shall be fitted also if the bilge
suction branch can be subjected to a
head of oil from the filling line.

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46 CFR Ch. I (10–1–14 Edition)

(c) Means shall be provided for controlling the cargo or pump room bilge
pumps and their suctions or discharges
in order that a flooded pump room may
be pumped out. Suitable portable or
manually operated pumps may be accepted as complying with this provision, or alternatively, the pump controls shall be arranged so that they are
operable from inside the pump room
and either from an accessible position
outside the pump room, or from the
pump room casing above the freeboard
deck.
§ 32.52–10 Bilge pumps and piping on
tank vessels constructed or converted prior to November 19, 1952—
TB/ALL.
(a) On tank vessels, the construction
or conversion of which was started
prior to November 19, 1952, bilge pumps
and piping which do not fully comply
with the regulations of this subchapter
shall be made as nearly equal to the requirements for tank vessels constructed on or after November 19, 1952,
as is necessary in the interest of safety.
(b) Bilge suctions from hold spaces
containing independent cargo tanks
may be connected to cargo pumps or
stripping pumps, provided the installation complies with the requirements of
§ 32.52–5(b).

Subpart 32.53—Inert Gas System
SOURCE: CGD 74–127, 41 FR 3843, Jan. 26,
1976, unless otherwise noted.

§ 32.53–1 Application—T/ALL.
(a) Except as provided in paragraphs
(b) and (c) of this section, this subpart
applies to:
(1) A U.S. crude oil tanker or product
carrier of 100,000 DWT tons (metric) or
more or combination carrier of 50,000
DWT tons (metric) or more, that has a
keel laying date on or after January 1,
1975.
(2) A new (as defined in 46 U.S.C. 3701)
crude oil tanker or product carrier, or
foreign flag crude oil tanker or product
carrier of 20,000 DWT tons or more entering the navigable waters of the U.S.
(3) A crude oil tanker that is
equipped with a cargo tank cleaning
system that uses crude oil washing.

(4) An existing product carrier of
20,000 deadweight tons (metric) or more
that has tank washing machines with a
capacity of more than 60 cubic meters
per hour after May 31, 1983.
(5) Any other U.S. or foreign flag:
(i) Crude oil tanker or product carrier of 70,000 deadweight tons (metric)
and over after May 31, 1981;
(ii) Crude oil tanker between 20,000
and 70,000 deadweight tons (metric)
after May 31, 1983;
(iii) Product carrier between 40,000
and 70,000 deadweight tons (metric)
after May 31, 1983.
(b) This subpart does not apply to
vessels designed to carry only:
(1) Liquefied gas cargo; or
(2) Grade E cargo that is carried at a
temperature lower than 5 °C below its
flash point.
(c) This part does not apply to vessels
as stated in 46 U.S.C. 3702.
[CGD 77–057a, 44 FR 66501, Nov. 19, 1979, as
amended by CGD 97–057, 62 FR 51043, Sept. 30,
1997; CGD 95–028, 62 FR 51198, Sept. 30, 1997]

§ 32.53–3

Exemptions.

(a) The Deputy for Operations Policy
and Capabilities (CG–DCO–D) grants
exemptions for crude oil tankers of less
than 40,000 deadweight tons not fitted
with high capacity tank washing machines, if the vessel’s owner can show
that compliance would be unreasonable
and impracticable due to the vessel’s
design characteristics.
(b) Requests for exemptions must be
submitted in writing to: Commandant
(CG–OES), Attn: Office of Operating
and Environmental Standards, U.S.
Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington,
DC 20593–7509.
(c) Each request must be supported
by documentation showing that:
(1) The system would be detrimental
to the safe operation of the vessel;
(2) It is physically impracticable to
install the system; or
(3) Adequate maintenance of the system would be impossible.
(d) The vessel’s owner may request a
conference. The exemption request file
will be available for use in the conference and additional arguments or
evidence in any form may be presented.
The conference will be recorded. The

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presiding officer summarizes the material presented at the conference and
submits written recommendations to
the Deputy for Operations Policy and
Capabilities (CG–DCO–D).
(e) The Deputy for Operations Policy
and Capabilities (CG–DCO–D) reviews
the exemption request file and decides
whether to grant or deny the exemption. The decision shall include an explanation of the basis on which the exemption is granted or denied, and constitutes final agency action.
[CGD 77–057a, 44 FR 66502, Nov. 19, 1979, as
amended by CGD 82–063b, 48 FR 29486, June
27, 1983; CGD 88–070, 53 FR 34534, Sept. 7, 1988;
CGD 95–072, 60 FR 50461, Sept. 29, 1995; CGD
96–041, 61 FR 50727, Sept. 27, 1996; CGD 97–057,
62 FR 51043, Sept. 30, 1997; USCG–2009–0702, 74
FR 49227, Sept. 25, 2009; USCG–2013–0671, 78
FR 60147, Sept. 30, 2013]

§ 32.53–5

Operation-T/ALL.

Unless the cargo tanks are gas free,
the master of each tankship to which
this subpart applies shall ensure that
the inert gas system is operated as necessary to maintain an inert atmosphere in the cargo tanks.
[USCG-2001–10224, 66 FR 48619, Sept. 21, 2001]

§ 32.53–10

General—T/ALL.

(a) Each tankship to which this subpart applies must have an inert gas
system that meets the requirements of
this subpart and is approved in accordance with 46 CFR 50.20.
(b) Each inert gas system must be designed, constructed and installed in accordance with the provisions of SOLAS
II–2, regulation 62, with the following
provisions:
(1) Acceptable types of water seals include the wet and semiwet type. Other
types of seals may be accepted on a
case by case basis if approval is given
by the Coast Guard Marine Safety Center.
(2) If a vapor collection system required to meet part 39 of this subchapter is connected to the inert gas
system, the instruction manual required by SOLAS II–2, regulation 62.21
must include procedures relating to
vapor collection operations.
[CGD 74–127, 41 FR 3843, Jan. 26, 1976, as
amended by CGD 95–028, 62 FR 51198, Sept. 30,
1997]

§ 32.53–30 Positive pressure—T/ALL.
Each inert gas system must be designed to enable the operator to maintain a gas pressure of 100 millimeters (4
inches) of water on filled cargo tanks
and during loading and unloading of
cargo tanks.
[USCG–2003–16630, 73 FR 65160, Oct. 31, 2008]

Subpart 32.55—Ventilation and
Venting
§ 32.55–1 Ventilation of tank vessels
constructed on or after July 1,
1951—TB/ALL.
(a) On all tanks vessels, the construction or conversion of which is started
on or after July 1, 1951, all enclosed
parts of the vessel, other than cargo,
fuel and water tanks, cofferdams and
void spaces, shall be provided with efficient means of ventilation.
(b) Compartments containing machinery where sources of vapor ignition
are normally present shall be ventilated in such a way as to remove vapors from points near the floor level or
the bilges. Effective steam or air actuated gas ejectors, blowers or ventilators fitted with heads for natural ventilation, with at least one duct extending to immediately below the floor
plates will be approved for this purpose. Machinery spaces below the
freeboard deck, in which fuels with
flash point of 110 °F or lower are used,
shall be equipped with power ventilation. (See § 32.60–20 for other requirements concerning pumprooms.)
§ 32.55–5 Ventilation of tank vessels
constructed between November 10,
1936, and July 1, 1951—TB/ALL.
(a) On tank vessels, the construction
or conversion of which was started on
or after November 10, 1936, and prior to
July 1, 1951, all enclosed parts of the
vessel, other than cargo, fuel, and
water tanks and cofferdams, shall be
provided with efficient means of ventilation.
(b) Pumprooms and compartments
containing machinery where sources of
vapor ignition are normally present
shall be ventilated in such a way as to
remove vapors from points near the
floor level or the bilges. Effective
steam or air actuated gas ejectors or

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§ 32.55–10

46 CFR Ch. I (10–1–14 Edition)

blowers or ventilators fitted with heads
for natural ventilation, will be approved for this purpose. (See § 32.65–20
for other requirements concerning
pumprooms.)
§ 32.55–10 Ventilation of tank vessels
contracted prior to November 10,
1936—TB/ALL.
Ventilation of tank vessels, the construction or conversion of which was
started prior to November 10, 1936,
shall be equal to the requirements of
tank vessels constructed before July 1,
1951, where the changes are, in the
opinion of the Officer in Charge, Marine Inspection, necessary in the interest of safety.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 66–33, 31 FR 15268, Dec. 6,
1966]

§ 32.55–15 Ventilation for hold spaces—
TB/ALL.
Hold spaces containing independent
cargo tanks shall be considered to be
equivalent to cargo pumprooms and
shall be ventilated and safeguarded as
such.
§ 32.55–20 Venting of cargo tanks of
tankships constructed on or after
July 1, 1951—T/ALL.
(a) Venting required. (1) On all tankships, the construction or conversion of
which is started on or after July 1, 1951,
each cargo tank shall be equipped with
a vent. The diameter of a vent shall be
not less than 21⁄2 inches.
(2) In any case where a venting system is required for a particular grade
of liquid, the venting system permitted
for a higher grade of liquid may be used
instead.
(b) Grade A liquids. (1) Cargo tanks in
which Grade A liquids are to be transported must be fitted with a venting
system consisting of a branch vent line
from each cargo tank connected to a
vent header which must extend to a
height above the weather deck equal to
at least 13.1 feet and must terminate at
a comparable distance from any living
or working space, ventilator inlet, or
source of ignition. When special conditions will prevent the vent line or
header outlets being permanently installed at a height above the deck of
13.1 feet an adjustable system must be

provided
which,
when
extended
vertically, is capable of reaching a
height of 13.1 feet.
(2) A weather hood may be installed
at the vent outlet providing it is of
such design as not to direct the flow of
vapor below the horizontal.
(3) The branch vent lines shall consist of either:
(i) Pipe with no valves or other hindrances to a free flow of gas; or,
(ii) Piping fitted with a pressure vacuum relief valve, provided means are
supplied for relieving all internal pressure on cargo tanks by fitting the
valve with a positive means for opening
its pressure valve to allow free passage
of gases through the branch vent line
or by the installation of a by-pass
fitted with a manually operated stop
valve.
(4) The vent header shall be fitted
with a flame arrester or pressure vacuum relief valve. If a pressure vacuum
relief valve is used in the header,
means shall be provided for relieving
all internal pressure on cargo tanks by
fitting the valve with a positive means
for opening its pressure valve to allow
free passage of gases through the header or by the installation of a by-pass
fitted with a manually operated stop
valve. A suitable means of relieving
pressure shall be fitted in the header in
order to prevent excess pressure being
built up in the tanks, in the event of
overfilling of the latter. The vent header system shall be provided with suitable connections for flushing and
draining. The vent header system shall
be of sufficient capacity as to be able
to carry off all displaced air and vapors
during loading of the cargo tanks without opening of ullage plates, cargo
hatches, etc. See § 32.20–20 for liquid
level gaging requirements.
(c) Grade B or C liquids. Cargo tanks
in which Grade B or C liquids are to be
transported shall be fitted with either
individual
pressure-vacuum
relief
valves which shall extend to a reasonable height above the weather deck or
shall be fitted with a venting system
consisting of branch vent lines connected to a vent header which shall extend to a reasonable height above the
weather deck and be fitted with a
flame arrester or a pressure-vacuum relief valve. The vent header system, if

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Coast Guard, DHS

§ 32.55–30

fitted, shall be provided with suitable
connections for flushing and draining,
and if desired, stop valves may be
placed in the individual branch vent
lines provided that each stop valve is
bypassed by a pressure-vacuum relief
valve.
(d) Grade D or E liquids. Cargo tanks
in which Grade D or E liquids only are
to be transported shall be fitted with
gooseneck vents and flame screens.
(e) Tank vents which meet the requirements of SOLAS will be considered equivalent to the provisions of
this section.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGD 73–96, 42 FR 49024, Sept. 26,
1977; CGD 95–028, 62 FR 51198, Sept. 30, 1997]

§ 32.55–25 Venting of cargo tanks of
tank barges constructed on or after
July 1, 1951—B/ALL.
(a) Venting required. (1) On all tank
barges, subject to the provisions of this
subchapter the construction or conversion of which is started on or after
July 1, 1951, each cargo tank shall be
equipped with a vent. The diameter of
a vent shall be not less than 21⁄2 inches.
(2) In any case where a venting system is required for a particular grade
of liquid, the venting system permitted
for a higher grade of liquid may be used
instead.
(b) Grade A, B, or C liquids. Cargo
tanks in which Grade A, B, or C liquids
are to be transported shall be fitted
with either individual pressure-vacuum
relief valves which shall extend to a
reasonable height above the weather
deck or shall be fitted with a venting
system consisting of branch vent lines
connected to a vent header which shall
extend to a reasonable height above
the weather deck and be fitted with a
pressure-vacuum relief valve. The vent
header system, if fitted, shall be provided with suitable connections for
flushing and draining, and if desired,
stop valves may be placed in the individual branch vent lines: Provided,
That each such stop valve is bypassed
by a pressure-vacuum relief valve.
(c) Grade D or E liquids. Cargo tanks
in which Grade D or E liquids only are

to be transported shall be fitted with
gooseneck vents and flame screens.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 70–10, 35 FR 3709, Feb. 25,
1970]

§ 32.55–30 Venting of cargo tanks of
tank vessels constructed between
November 10, 1936, and July 1,
1951—TB/ALL.
(a) Venting required. On all tank vessels, the construction or alteration of
which is started on or after November
10, 1936, and prior to July 1, 1951, each
cargo tank shall be equipped with a
vent. The details of the venting system
shall meet the requirements of this
section, or alternatively, the requirements of either § 32.55–20 or § 32.55–25, as
applicable, shall be met.
(b) Grade A liquids. (1) Cargo tanks in
which Grade A liquids are to be transported shall be fitted with a venting
system consisting of branch vent line
from each cargo tank connected to a
vent header which shall extend to a
reasonable height above the weather
deck and be fitted with a flame arrester or pressure-vacuum relief valve.
Each branch vent line may be provided
with a manually operated control
valve, provided it is bypassed with a
pressure-vacuum relief valve or each
cargo tank to which such a branch vent
line is connected is fitted with an independent pressure-vacuum relief valve.
The vent header system shall be provided with suitable connections for
flushing and draining.
(2) In barges with independent tanks
carrying Grade A liquids, separate discharge pipes may be fitted to each
pressure-vacuum relief valve, or the
pressure-vacuum relief valve may be
elevated, so that in either case the discharge from such valve will not be less
than 7 feet above the deck where practicable.
(c) Grade B or C liquids. Cargo tanks
in which Grade B or C liquids are to be
transported shall be fitted with individual pressure-vacuum relief valves or
shall be fitted with a venting system
consisting of branch vent lines connected to a vent header which shall extend to a reasonable height above the
weather deck and be fitted with a
flame arrester or a pressure-vacuum relief valve.

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§ 32.55–35

46 CFR Ch. I (10–1–14 Edition)

(d) Grade D or E liquids. Cargo tanks
in which Grade D or E liquids only are
to be transported shall be fitted with
gooseneck vents and flame screens unless such tanks are vented by pressurevacuum relief valves or a venting system of branch vent lines and a vent
header.
§ 32.55–35 Venting of cargo tanks on
tank vessels constructed prior to
November 10, 1936—TB/ALL.
The venting of cargo tanks of tank
vessels, the construction or alteration
of which was started prior to November
10, 1936, shall be made to equal the requirements of tank vessels constructed
before July 1, 1951, where the changes
are, in the opinion of the Officer in
Charge, Marine Inspection, necessary
in the interests of safety: Provided,
That on such vessels carrying Grade A
cargo the requirements in § 32.55–30(b)
shall be met.
§ 32.55–45 Venting of cofferdams and
void spaces of tank vessels constructed on or after November 10,
1936—TB/ALL.
(a) Except as provided in paragraph
(b) of this section, on all tank vessels,
the construction or conversion of
which was started on or after November 10, 1936, cofferdams and void spaces
shall be provided with gooseneck vents
fitted with a flame screen or pressurevacuum relief valves. The diameter of a
vent shall be not less than 21⁄2 inches.
(b) On unmanned tank barges not
fitted with fixed bilge systems in the
cofferdams and void spaces, vents for
cofferdams and void spaces will not be
required.
§ 32.55–50 Ventilation
of
tankships
that have a keel laying date on or
after January 1, 1975—T/ALL.
Each tankship that has a keel laying
date on or after January 1, 1975, must
have deckhouse and superstructure
ventilation inlets and outlets and other
openings to the exterior arranged to
minimize the admission of flammable
gas to enclosed spaces that contain a
source of ignition.
[CGD 74–127, 41 FR 3844, Jan. 26, 1976]

Subpart 32.56—Structural Fire Protection for Tank Ships With a
Keel Laying Date On or After
January 1, 1975
SOURCE: CGD 74–127, 41 FR 3844, Jan. 26,
1976, unless otherwise noted.

§ 32.56–1 Application—T/ALL.
(a)This subpart applies to all tankships that have a keel laying date on or
after January 1, 1975.
(b) SOLAS-certificated vessels may
be considered equivalent to the provisions of this subpart.
[CGD 74–127, 41 FR 3844, Jan. 26, 1976, as
amended by CGD 95–028, 62 FR 51198, Sept. 30,
1997]

§ 32.56–5 General—T/ALL.
(a) Except as provided in paragraphs
(c) and (d) of this section, each category A machinery space must be aft of
the cargo area and pumprooms.
(b) Except as provided in paragraphs
(c), (d), and (e) of this section, each accommodation space, service space except isolated storage spaces, and control space and each main cargo control
station must be aft of:
(1) The cargo area;
(2) All cargo pumprooms; and
(3) All cofferdams that isolate the
cargo area from category A machinery
spaces.
(c) Except as provided in paragraph
(e) of this section, any pumproom may
be recessed below accommodation,
service, and control spaces and recessed into any category A machinery
space if the distance between the
deckhead of the recess and the underside of the accommodation, service, or
control space is at least equal to the
height of the recess.
(d) Accommodation, service, control
and certain machinery spaces, such as
spaces for bow thrusters, windlass, and
emergency fire pumps, may be located
forward of the cargo area and pumprooms if it is demonstrated to the Commandant that the overall degree of
safety of the vessel is improved and
that the degree of fire and life safety
for these spaces is not less than the degree of fire and life safety for similar
spaces located aft.
(e) On liquefied gas carriers:

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Coast Guard, DHS

§ 32.56–30

(1) Main cargo control stations may
be located in the cargo area;
(2) Accommodation, service, and control spaces may be located over
cofferdams that isolate cargo tanks
other than integral tanks from category A machinery spaces;
(3) Pumprooms may not be recessed
into any space below deck.

(a) The exterior boundaries that face
the cargo area.
(b) The portion of the exterior boundaries within 3 meters (10 feet) or the
length of the vessel divided by 25,
whichever is greater, except that the
distance need not exceed 5 meters (16.4
feet), of these boundaries.

positions—T/

§ 32.56–22 Openings in and insulation
of boundaries: Other spaces—T/
ALL.

(a) No navigation position may be
above the cargo area unless it is approved by the Commandant as necessary for the safe operation of the vessel.
(b) Each navigation position that is
above the cargo area must be separated
from the deck by an unenclosed space
that extends at least 2 meters (6.6 feet)
from the deck to the navigation position.
(c) Openings to navigation positions
above cargo areas, except air locks,
must be at least 2.4 meters (7.9 feet)
above the deck.

If openings are fitted into the following exterior boundaries of any space
other than an accommodation, service,
or control space, the interior of the
space must be insulated to ‘‘A-60’’
Class and the space must not provide
access to any accommodation, service,
or control space:
(a) The exterior boundaries that face
the cargo area.
(b) The portion of the exterior boundaries within 3 meters (10 feet) or the
length of the vessel divided by 25,
whichever is greater, except that the
distance need not exceed 5 meters (16.4
feet), of these boundaries.

§ 32.56–15

§ 32.56–25 Category
A
machinery
spaces: Windows and port lights—T/
ALL.

§ 32.56–10
ALL.

Navigation

Deck spills—T/ALL.

A coaming or other barrier at least .3
meters (1 foot) higher than adjacent
spill containment barrier must be provided to prevent cargo spills from flowing aft of the housefront.
§ 32.56–20 Insulation
of
exterior
boundaries: Superstructures and
deckhouses—T/ALL.
The following exterior boundaries of
superstructures and deckhouses that
contain accommodation, service, and
control spaces, except wheelhouses,
must be insulated to ‘‘A-60’’ Class:
(a) The exterior boundaries that face
the cargo area.
(b) The portion of the exterior bulkheads and decks within 3 meters (10
feet) of these boundaries.
§ 32.56–21 Openings in exterior boundaries: Accommodation, service, and
control spaces—T/ALL.
The following exterior boundaries of
accommodation, service, and control
spaces, except wheelhouses, must have
no openings, and portlights must be of
a fixed type with easily operable steel
covers on the inside:

(a) Except as provided in paragraph
(b) of this section and subpart 111.105,
of this chapter, boundaries of category
A machinery spaces and boundaries of
cargo pumprooms must not be pierced
for windows or portlights.
(b) Skylights that can be closed from
outside the spaces they serve may be
fitted in boundaries of category A machinery spaces.
[CGD 74–127, 41 FR 3844, Jan. 26, 1976, as
amended by CGD 74–125A, 47 FR 15230, Apr. 8,
1982]

§ 32.56–30 Category
A
machinery
spaces: Bulkheads and decks—T/
ALL.
(a) Bulkheads and decks that separate category A machinery spaces from
cargo pumprooms must be ‘‘A’’ Class
construction.
(b) Bulkheads and decks that separate category A machinery spaces or
cargo pumprooms, including the pumproom entrance, from accommodation,
service, or control spaces must be ‘‘A60’’ Class construction.

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§ 32.56–35
§ 32.56–35

46 CFR Ch. I (10–1–14 Edition)
Doors—T/ALL.

(a) Casing doors in category A machinery spaces and all elevator doors
must be self-closing and must meet the
requirements of 46 CFR 72.05–25(b).
(b) If a means of holding a door open
is used, it must be a magnetic holdback
or equivalent device that is operated
from the bridge or other suitable remote control position.
§ 32.56–40 Category
A
machinery
spaces: Insulation—T/ALL.
Structural insulation within category A machinery spaces must have a
barrier such as metal foil, sheet metal,
cementitious coating, or other vapor
barrier so that the surface of that insulation is impervious to oil and oil vapors.
[CGD 74–127, 41 FR 3844, Jan. 26, 1976, as
amended by CGD 74–127, 41 FR 4826, Feb. 2,
1976]

§ 32.56–45

Draft stops—T/ALL.

(a) Where ceilings or linings are
fitted in accommodation, service, or
control spaces, ‘‘B’’ Class bulkheads,
except those that form passageways,
may stop at the ceiling or lining if
draft stops of ‘‘B’’ Class construction
are fitted between the ceiling or lining
and the deck or shell at intervals of 14
meters (45 feet) or less.
(b) Spaces behind the linings of stairways and other trunks must have draft
stops at each deck.
§ 32.56–50
ALL.

Combustible

veneers—T/

(a) Except as provided in paragraph
(b) of this section combustible veneers
on bulkheads, linings, and ceilings
within accommodation, service, or control spaces must be 2 millimeters (.079
inches) or less in thickness.
(b) Veneers on bulkheads, linings,
and ceilings in concealed spaces, corridors, stairway enclosures, or control
spaces must be an approved interior
finish material or a reasonable number
of coats of paint.
§ 32.56–55 Control spaces—T/ALL.
Bulkheads and decks that separate
control spaces from adjacent spaces
must be ‘‘A’’ Class construction and insulated against fire. 46 CFR table 72.05–

10(e) of the Passenger Vessel Regulations may be used as a guide.
§ 32.56–60

Ventilation ducts—T/ALL.

(a) Each duct for ventilation of Category A machinery spaces that passes
through accommodation, service, or
control spaces must be:
(1) Constructed of steel and insulated
to ‘‘A-60’’ Class; or
(2) Constructed of steel, fitted with
an automatic fire damper at each
boundary where it enters and leaves
the Category A machinery space, and
insulated to ‘‘A-60’’ Class for a distance
of 5 meters (16.4 feet) beyond each machinery space boundary.
(b) Each duct for ventilation of accommodation, service, and control
spaces that passes through Category A
machinery spaces must be constructed
of steel and be fitted with an automatic fire damper at each Category A
machinery space boundary.

Subpart 32.57—Structural Fire Protection for Tank Vessels Contracted for On or After January 1, 1963
§ 32.57–1

Application—TB/ALL.

(a) The provisions of this subpart
shall apply to all tank vessels contracted for on or after January 1, 1963.
(b) SOLAS-certificated vessels may
be considered equivalent to the provisions of this subpart.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGD 95–028, 62 FR 51198, Sept. 30,
1997]

§ 32.57–5

Definitions—TB/ALL.

(a) Standard fire test. A ‘‘standard fire
test’’ is one which develops in the test
furnace a series of time temperature
relationships as follows:
5 minutes—1,000 °F.
10 minutes—1,300 °F.
30 minutes—1,550 °F.
60 minutes—1,700 °F.

(b) ‘‘A’’ Class divisions. ‘‘A’’ Class divisions such as bulkheads and decks,
means divisions that are composed of
steel or an equivalent metal, suitably
stiffened, and made intact with the
main structure of the vessel, including
the shell, structural bulkheads, or
decks. They are constructed so that, if

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Coast Guard, DHS

§ 32.57–10

subjected to the standard fire test,
they are capable of preventing the passage of flame and smoke for one hour.
In addition, they are insulated with approved structural insulation, bulkhead
panels, or deck coverings so that the
average temperature on the unexposed
side does not rise more than 139 °C (250
°F) above the original temperature, nor
does the temperature at any one point,
including any joint, rise more than 181
°C (325 °F) above the original temperature, within the time listed below:
Class
Class
Class
Class

A-60 .........................................
A-30 .........................................
A-15 .........................................
A-0 ...........................................

60 minutes
30 minutes
15 minutes
0 minutes with no insulation requirement

(c) ‘‘B’’ Class bulkheads. Bulkheads of
the ‘‘B’’ Class shall be constructed with
approved incombustible materials and
made intact from deck to deck and to
shell or other boundaries. They shall be
so constructed that, if subjected to the
standard fire test, they would be capable of preventing the passage of flame
for one-half hour.
(d) ‘‘C’’ Class divisions. Bulkheads or
decks of the ‘‘C’’ Class shall be constructed of approved incombustible
materials, but need meet no requirements relative to the passage of flame.
(e) Steel. Where the term ‘‘steel or
other equivalent metal’’ is used in this
subpart, it is intended to require a material which, by itself or due to insulation provided, has structural and integrity qualities equivalent to steel at the
end of the applicable fire exposure.
(f) Approved material. Where in this
subpart approved materials are required, they refer to materials approved under the applicable subparts of
subchapter Q (Specifications) of this
chapter, as follows:
Deck Coverings .................................
Structural Insulations .........................
Bulkhead Panels ...............................
Incombustible Materials ....................
Interior Finishes .................................

164.006
164.007
164.008
164.009
164.012

(g) Stairtower. A stairtower is a stairway which penetrates more than a single deck within the same enclosure.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 67–90, 33 FR 1015, Jan. 26,
1968; CGD 74–127, 41 FR 3845, Jan. 26, 1976;
CGD 75–032, 41 FR 17910, Apr. 29, 1976]

§ 32.57–10

Construction—TB/ALL.

(a) The hull, superstructure, structural bulkheads, decks, and deckhouses
shall be constructed of steel. Alternately, the Commandant may permit
the use of other suitable material in
special cases, having in mind the risk
of fire.
(b) Bulkheads of galleys, paint and
lamp lockers, and emergency generator
rooms shall be of ‘‘A’’ Class construction.
(c) The boundary bulkheads and
decks separating the accommodations
and control stations from cargo, and
machinery spaces and from galleys,
main pantries and storerooms other
than small service lockers shall be of
‘‘A’’ Class Construction.
(d) The following conditions apply
within accommodation, service, and
control spaces:
(1) Corridor bulkheads in accommodation areas shall be of ‘‘A’’ or ‘‘B’’
Class intact from deck to deck Stateroom doors in such bulkheads may
have a louver in the lower half.
(2) Stairtowers, elevator, dumbwaiter, and other trunks shall be of
‘‘A’’ Class construction.
(3) Bulkheads not already specified to
be of ‘‘A’’ or ‘‘B’’ Class construction
may be of ‘‘A’’, ‘‘B’’, or ‘‘C’’ Class Construction.
(4) The integrity of any deck in way
of a stairway opening, other than a
stairtower, shall be maintained by
means of ‘‘A’’ or ‘‘B’’ Class divisions or
bulkheads and doors at one level. The
integrity of a stairtower shall be maintained by ‘‘A’’ Class doors at every
level. The doors shall be of the selfclosing type. No means shall be provided for locking such doors, except
that crash doors or locking devices capable of being easily forced in an emergency may be employed provided a permanent and conspicuous notice to this
effect is attached to both sides of the
door. Holdback hooks or other means
of permanently holding the door open
will not be permitted. However, magnetic holdbacks operated from the
bridge or from other suitable remote
control positions are acceptable.
(5) Interior stairs, including stringers
and treads shall be of steel or other
suitable material having in mind the

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§ 32.59–1

46 CFR Ch. I (10–1–14 Edition)

risk of fire. This is not intended to preclude the use of other material for nosing, walking surfaces, etc., over the
steel.
(6) Except for washrooms and toilet
spaces, deck coverings within accommodation spaces shall be of an approved type. However, overlays for leveling or finishing purposes which do
not meet the requirements for an approved deck covering may be used in
thicknesses not exceeding 3⁄8 of an inch.
(7) Except as provided in paragraph
(d)(7–a) of this section, ceilings, linings, and insulation, including pipe and
duct laggings, must be made of approved incombustible material.
(7–a) Combustible insulations and
vapor barriers that have a maximum
extent of burning of 122 millimeters (5
inches) or less when tested in accordance with ASTM D 4986, ‘‘Standard
Test Method for Horizontal Burning
Characteristics of Cellular Polymeric
Materials’’ (incorporated by reference,
see § 32.01–1), may be used within refrigerated compartments.
(8) Any sheathing, furring or holding
pieces incidental to the securing of any
bulkhead, ceiling, lining, or insulation
shall be of approved incombustible materials.
(9) Bulkheads, linings and ceilings
may have a combustible veneer within
a room not to exceed 2 millimeters (.079
inch) in thickness. However, combustible veneers, trim, decorations, etc.,
shall not be used in corridors or hidden
spaces. This is not intended to preclude
the use of an approved interior finish
or a reasonable number of coats of
paint.
(e) Wood hatch covers may be used
between cargo spaces or between stores
spaces. Hatch covers in other locations
shall be of steel or equivalent metal
construction. Tonnage openings shall
be closed by means of steel plates or
equivalent metal construction.
(f) Nitrocellulose or other highly
flammable or noxious fume-producing
paints or lacquers shall not be used.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 66–33, 31 FR 15268, Dec. 6,
1966; CGFR 67–90, 33 FR 1015, Jan. 26, 1968;
CGD 74–127, 41 FR 3845, Jan. 26, 1976; CGD 95–
028, 62 FR 51198, Sept. 30, 1997; USCG-1998–
4442, 63 FR 52190, Sept. 30, 1998; USCG-1999–
5151, 64 FR 67177, Dec. 1, 1999]

Subpart 32.59—Minimum Longitudinal Strength and Plating
Thickness Requirements for
Unclassed Tank Vessels That
Carry Certain Oil Cargoes—
TB/ALL
§ 32.59–1 Minimum section
and plating thickness
ments—TB/ALL.

(a) As used in this section, Rule
means the current Rules of the American Bureau of Shipping or other recognized classification society, as appropriate for the vessel’s present service
and regardless of the year the vessel
was constructed.
(b) The requirements of this section
apply to all in-service, unclassed tank
vessels certificated to carry a pollution
category I oil cargo listed in 46 CFR
Table 30.25–1.
(c) For all vessels except those limited on their Certificate of Inspection
to river routes only, the minimum midship section modulus must be—
(1) At least 90 percent of that required by Rule; or
(2) Where there is no specific Rule requirement, at least 100 percent of that
which is necessary to meet the bending
moment developed under a full load
condition in still water, using a permissible bending stress of 12.74 kN/cm2
(1.30 t/cm2, 8.25 Ltf/in2).
(d) Within the 40-percent midship
length, the average flange and web
thicknesses of each longitudinal stiffener must be as follows:
(1) For deck and bottom stiffeners: at
least 85 percent of Rule thickness, unless a buckling analysis demonstrates
that lesser thicknesses can be safely
tolerated. However, the average thickness must never be less than 80 percent
of Rule thickness; and
(2) For side stiffeners: at least 75 percent of Rule thickness.
(e) Within the 40-percent midship
length, the average thickness for longitudinal strength plating must be at
least as follows:
(1) Weather deck: 75 percent of Rule
thickness;
(2) Hatch: 70 percent of Rule thickness;
(3) Trunk: 75 percent of Rule thickness;

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§ 32.60–10

(4) Sheer strake: 75 percent of Rule
thickness;
(5) Outer sideshell: 75 percent of Rule
thickness;
(6) Inner sideshell: 75 percent of Rule
thickness;
(7) Outer bottom; 75 percent of Rule
thickness;
(8) Inner bottom: 70 percent of Rule
thickness;
(9) Keel: 75 percent of Rule thickness;
(10) Bulkheads: 75 percent of Rule
thickness.
[CGD 91–209, 58 FR 52602, Oct. 8, 1993]

Subpart 32.60—Hull Requirements
for Tank Vessels Constructed
On or After July 1, 1951
NOTE: Requirements for double hull construction for vessels carrying oil, as defined
in 33 CFR 157.03, in bulk as cargo are found
in 33 CFR 157.10d.

§ 32.60–1 Scantlings,
material,
and
workmanship—TB/ALL.
(a) All tank vessels, the construction
or conversion of which is started on or
after July 1, 1951, shall conform to the
requirements in this subpart in construction of hulls. The hull and deckhouses shall be of steel or iron construction except that the pilothouse
and decks over quarters may be constructed of wood. Scantlings, material,
and workmanship, subdivision of cargo
spaces, fitting of cofferdams, and testing of tanks shall be at least equivalent to the requirements of the American Bureau of Shipping or other recognized classification society.
(b) See subpart 32.57 for structural
fire protection requirements for tank
vessels contracted for on or after January 1, 1963.
§ 32.60–5 Subdivision of cargo space—
TB/ALL.
The cargo space shall be divided into
tight compartments as necessary to
avoid excessive stresses and to provide
stability.
§ 32.60–10 Segregation of cargo; Grade
A, B, C, or D—TB/ALL.
(a) General. The galleys, living quarters, navigation spaces, general cargo
spaces, boiler rooms, and enclosed
spaces where sources of vapor ignition

are normally present, shall be segregated
from
cargo
tanks
by
cofferdams or pump rooms or tanks, either empty or used to carry liquid having a flashpoint of 150 °F. or above, or
deck spaces enclosed or open.
(b) Cargo tank spaces. Cargo tank
spaces shall extend to the main deck,
with hatches and vents located on the
weather deck. Liquids having a flash
point of not less than 150 °F. may be
carried in the bulk tanks located beyond the segregating cofferdams and/or
pump rooms.
(c) Enclosed spaces. (1) Cargo and vent
piping passing through enclosed spaces
immediately above the bulk cargo
tanks shall be continuous except that
flanged joints connecting pipe sections
will be permitted.
(2) No openings to cargo tank shall be
permitted other than stuffing boxes
through which valve control rods or
permanently installed gage tapes extend and openings for use of tank
cleaning machines. Openings for tank
cleaning machines, when not in use,
shall be kept closed by means of gastight bolted plates and when in use
shall be made essentially gas and watertight by covers through which hose
or pipe to the tank cleaning machines
extend.
(3) The overhead in way of quarters
shall be gastight.
(d) Stowage spaces. The spaces described in paragraph (c) of this section
may be used for stowage purposes and
for general cargo provided that adequate ventilation is furnished.
(e) Openings. (1) Except as provided in
paragraph (c) of this section, there
shall be no manholes or other openings
from cargo tanks to any other enclosed
spaces. An exception may be made to
allow direct access from cargo tanks to
innerbottoms through gas tight bolted
manholes, provided:
(i) The innerbottom tanks are voids
or ballast tanks only, and
(ii) The innerbottom tanks are protected from sources of ignition similar
to the cargo tanks, and any bilge or
ballast pumping system serving the
innerbottom tanks are treated like
cargo pumping systems.
(2) Any vents, sounding tubes, and
similar piping passing through such
tanks shall be run in a suitable trunk;

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§ 32.60–15

46 CFR Ch. I (10–1–14 Edition)

or such piping shall have a wall thickness equal to or greater than the
innerbottom plating, but not less than
schedule 80, and shall be welded continuously on both sides of the
innerbottom plating.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 69–72, 34 FR 17481, Oct. 29,
1969]

§ 32.60–15 Segregation of cargo; Grade
E—TB/ALL.
(a) General. The galleys, living quarters, navigation spaces, general cargo
spaces, boilerrooms, and enclosed
spaces containing machinery, where
sources of vapor ignition are normally
present, shall be segregated from the
cargo tanks by tight bulkheads and intervening spaces are not required.
(b) Cargo tank spaces. Cargo tank
spaces can be terminated at any deck
with hatches on the same deck, but the
vent lines shall be extended to the
weather deck. Butterworth openings
and extension rods may be located on
the tank top.
§ 32.60–20 Pumprooms on tank vessels
carrying Grade A, B, C, D and/or E
liquid cargo—TB/ALL.
(a) Cargo pumps. In tank vessels carrying Grade A, B, C, or D liquid cargo,
cargo pumps shall be isolated from
source of vapor ignition by gastight
bulkheads. A gastight bulkhead between the pumproom and the pump engine room may be pierced for drive
shaft and pump engine control rods
provided such openings are fitted with
stuffing boxes or other approved gland
arrangement. A steam driven pump
shall not be considered a source of
vapor ignition provided the steam temperature does not exceed 500 °F.
(b) Ventilation for pumprooms on tank
vessels the construction or conversion of
which is started between July 1, 1951, and
January 1, 1963. (1) Pumprooms of all
tank vessels, the construction or conversion of which is started between
July 1, 1951, and January 1, 1963, shall
be ventilated in such a way as to remove vapors from points near the floor
level or bilges. Pumprooms on tankships handling Grade A, B, or C liquid
cargo, with machinery located below
the freeboard deck, shall be equipped
with power ventilation. Pumprooms

equipped with power ventilation shall
have the ventilation outlets terminate
more than six feet from any opening to
the interior part of the vessel which
normally contains sources of vapor ignition.
(2) For all tank vessels, the construction or conversion of which is started
between October 1, 1959, and January 1,
1963, the power ventilation shall not
produce a source of vapor ignition in
either the pumproom or the ventilation
systems associated with the pumproom. The capacity of power ventilation units shall be sufficient to effect a
complete change of air in not more
than 3 minutes, based upon the volume
of the pumproom and associated trunks
up to the deck at which access from
the weather is provided.
(c) Ventilation for pumprooms on tank
vessels the construction or conversion of
which is started on or after January 1,
1963. (1) For all tank vessels, the construction or conversion of which is
started on or after January 1, 1963, the
cargo pumprooms shall be fitted in accordance with paragraphs (a) and (d) of
this section. Cargo pumprooms on
these vessels shall be ventilated in
such a way as to remove vapors from
points near the floor level or bilges.
Cargo pumprooms on tank vessels handling Grade A, B, or C liquid cargo,
shall be equipped with power ventilation of the exhaust type having capacity sufficient to effect a complete
change of air in not more than 3 minutes based upon the volume of the
pumproom and associated trunks up to
the deck at which access from the
weather is provided.
(2) The power ventilation units shall
not produce a source of vapor ignition
in either the pumproom or the ventilation systems associated with the pumproom. Inlets to exhaust ducts shall be
provided and located near the floor
level at points where concentrations of
vapors may be expected. Ventilation
from the weather deck shall be provided. Power supply ventilation may be
fitted in lieu of natural ventilation,
but when fitted shall be arranged to
avoid turbulence in the cargo pumproom. Cargo pumprooms equipped with
power ventilation shall have the ventilation outlets terminate more than 6
feet from any opening to the interior

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Coast Guard, DHS

§ 32.60–45

part of the vessel which normally contains sources of vapor ignition, and
shall be so located as to minimize the
possibility of recirculating contaminated air through the pumproom.
(3) Cargo pumprooms handling Grade
D and/or E liquid cargo only shall be
fitted with at least two ducts extended
to the weather deck, one of which shall
be extended to a point near the floor
level. This does not preclude installation of power ventilation, if desired.
(4) The ventilation required in this
paragraph shall be sufficient to properly ventilate the pumproom with the
access openings closed.
(d) Access. The access to a cargo
pumproom in a tank vessel carrying
Grade A, B, C, or D liquid cargo shall
be from the open deck.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 70–143, 35 FR 19905, Dec.
30, 1970]

§ 32.60–25 Living quarters—TB/ALL.
For living quarters the partitions
and sheathing shall be of an approved
fire resistive construction. The specification for incombustible materials is
in subchapter Q (Specifications) of this
chapter.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGD 95–028, 62 FR 51198, Sept. 30,
1997]

§ 32.60–30 Tank vessels with independent tanks—TB/ALL.
(a) Independent cargo tanks may be
located in hold spaces or in other cargo
tanks; however, a working space of at
least 15 inches shall be maintained
around each independent tank, or else
provisions shall be made for moving
such tanks to furnish such working
space, except that less than 15 inches
around such tanks may be permitted if
in the judgment of the Officer in
Charge, Marine Inspection, having jurisdiction, a satisfactory inspection of
the cargo tanks and hull structure can
be made.
(b) When an independent cargo tank
is located in an enclosed space other
than a cargo tank, such enclosed space
shall be considered as equivalent to a
pumproom and shall be safeguarded as
such as required by this subpart.
(c) Cargo tanks independent of the
hull structure shall be supported in

saddles or on foundations of steel or
other suitable material and securely
attached in place to preclude the cargo
from being damaged or shifting as a result of collision. The arrangement shall
be such as to permit longitudinal and
circumferential, or athwartship and
vertical, expansion of the cargo tanks.
Each tank shall be supported so as to
prevent the concentration of excessive
loads on the supporting portion of the
shell.
§ 32.60–35 Tank vessels carrying Grade
A liquid cargo—TB/ALL.
(a) Grade A liquids having a Reid
vapor pressure in excess of 25 pounds
per square inch shall be transported in
cargo tanks which are independent of
the hull.
(b) Barges carrying Grade A liquids
having a Reid vapor pressure in excess
of 25 pounds per square inch shall be of
a Type III barge hull as defined in
§ 32.63–5(b)(3).
[CGFR 70–10, 35 FR 3709, Feb. 25, 1970]

§ 32.60–40 Construction and testing of
cargo tanks and bulkheads—TB/
ALL.
(a) All cargo tanks vented at gage
pressure of 4 pounds per square inch or
less shall be constructed and tested as
required by standards established by
the American Bureau of Shipping or
other recognized classification society.
The design of cargo tanks integral with
the hull and vented at a gage pressure
exceeding 4 pounds per square inch but
not exceeding 10 pounds per square
inch gage pressure will be given special
consideration by the Commandant.
(b) Cargo tanks vented at a gage
pressure exceeding 10 pounds per
square inch are considered to be pressure vessels and shall be of cylindrical
or similar design and shall meet the requirements of subchapter F (Marine
Engineering) of this chapter.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 68–82, 33 FR 18805, Dec. 18,
1968]

§ 32.60–45 Segregation of spaces containing the emergency source of
electric power—TB/ALL.
(a) The provisions of this section
shall apply to all vessels contracted for
on or after October 1, 1958.

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§ 32.63–1

46 CFR Ch. I (10–1–14 Edition)

(b) When a compartment containing
the emergency source of electric
power, or vital components thereof, adjoins a space containing either the
ship’s service generators or machinery
necessary for the operation of the
ship’s service generators, all common
bulkheads and/or decks shall be protected by approved ‘‘structural insulation’’ or other approved material. This
protection shall be such as to be capable of preventing an excessive temperature rise in the space containing the
emergency source of electric power, or
vital components thereof, for a period
of at least one hour in the event of fire
in the adjoining space. Bulkheads or
decks meeting Class A-60 requirements,
as defined by § 72.05–10 of subchapter H
(Passenger Vessels) of this chapter,
will be considered as meeting the requirements of this paragraph.

Subpart 32.63—Hull and Cargo
Tank Requirements for Tank
Barges Constructed or Converted On or After July 1,
1964, and Carrying Certain
Dangerous Bulk Cargoes
§ 32.63–1

Application—B/ALL.

(a) The requirements of this subpart
shall apply to all tank barges, the construction or conversion of which is
started on or after July 1, 1964, and carrying those cargoes listed in table
30.25–1 which are defined as:
(1) Flammable liquids having a Reid
vapor pressure in excess of 25 pounds
per square inch, absolute, in independent tanks (part 32).
(2) Liquefied flammable gases (part 38
of this subchapter).
[CGFR 70–10, 35 FR 3709, Feb. 25, 1970]

§ 32.63–5 Barge hull classifications—B/
ALL.
(a) Each barge subject to the provision of this subpart shall be assigned a
hull type number. The Commandant
will designate the barge hull types to
be used for carrying cargoes in order to
insure that the vessel is designed consistent with the degree and nature of
the hazard of the commodity carried.
(b) For this purpose the barge hull
types shall be as follows:

(1) Type I barge hull. Barge hulls
classed as Type I are those designed to
carry products which require the maximum preventive measures to preclude
the uncontrolled release of the cargo to
the waterways and/or atmosphere.
(2) Type II barge hull. Barge hulls
classed as Type II are those designed to
carry products which require substantial preventive measures to preclude
uncontrolled release to the atmosphere, but whose uncontrolled release
to the waterways does not constitute a
longlasting public or operating personnel hazard, though local and temporary pollution may occur.
(3) Type III barge hull. Barge hulls
classed as Type III are those designed
to carry products of sufficient hazard
to require a moderate degree of control.
§ 32.63–8 Alternative arrangements—B/
ALL.
(a) Alternative arrangements, differing from those specifically required
by this subpart, may be considered and
approved by the Commandant, if it is
demonstrated to his satisfaction that a
degree of safety is obtained which is
consistent with the intent of this subpart.
§ 32.63–10 Rakes
and
coamings—B/
ALL.
(a) Each barge hull shall be constructed with a suitable blow form
(length, shape, and height of headlog)
to protect against diving at the maximum speed at which the barge is designed to be towed. In any integrated
tow, only the lead barge need comply
with this requirement. In any case, the
operator of the towing vessel shall be
guided by appropriate speed limitations.
(b) All open hopper type barge hulls
shall be provided with coamings around
the hopper space and, additionally, a
36-inch minimum height plowshare
breakwater on the forward rake.
Coamings shall have a minimum
height of 36 inches forward graduated
to a minimum height of 24 inches at
midlength and 18 inches thereafter.
§ 32.63–20 Hull structure—B/ALL.
(a) General. In addition to complying
with the requirements of § 32.60–1, as

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§ 32.65–1

applicable, barge hulls of Types I and II
shall comply with the provisions of
this section.
(b) Types I and II barge hull. Under an
assumed grounding condition such that
the forward rake bulkhead rests upon a
pinnacle at the water surface, the maximum hull bending stress shall not exceed the following limits:
(1) Independent tanks may be installed in such a manner that they do
not contribute to the strength and
stiffness of the barge. In such case, the
hull stress shall not exceed either 50
percent of the minimum ultimate tensile strength of the material or 70 percent of the yield strength when specified, whichever is greater.
(2) The Commandant may consider a
reduction in hull stress when independent tanks are installed in such a
manner as to contribute to the
strength and stiffness of the barge and
this is accounted for in determining
the effective section modulus of the
barge. In such case, the hull stress
shall not exceed the percentage stress
values prescribed in paragraph (b)(1) of
this section multiplied by the quantity
(1.5¥SWT/UTS), where SWT is the
stress calculated without including the
effect of the tanks, and UTS is the
minimum ultimate tensile strength of
the material. The value SWT, however,
shall in no case be more than 75 percent of UTS.
§ 32.63–25 Cargo tanks and supports—
B/ALL.
(a) General. Saddles and hold-down
securing straps for independent cargo
tanks shall be designed to prevent tank
failure due to loads induced in the saddles or straps by barge deflection.
(b) Collision protection. (1) All independent cargo tanks installed on Type
I and Type II barge hulls shall be protected with suitable collision chocks or
collision straps to withstand a longitudinal collision load of one and one-half
times the weight of the tank and cargo.
All other independent cargo tanks
shall be provided with suitable collision chocks or collision straps to withstand a longitudinal collision load
equal to the weight of the tank and
cargo.
(2) All cargo tanks shall be so located
as to reduce the likelihood of their

being damaged in the event of collision. This protection shall be obtained
by locating the cargo tanks not less
than 4 feet from the side shell and boxend for Type I hulls and 3 feet for Type
II barge hulls, and not less than 25 feet
from the headlog at the bow for both
types.
(c) Cargo tank design—(1) Types I and
II barge hulls. (i) In addition to requirements provided for in applicable regulations for a specific commodity, cargoes subject to the provisions of this
subpart shall be transported in cargo
tanks meeting the requirements of this
paragraph. Pressure vessel-type cargo
tanks shall have sufficient additional
strength so as to limit the maximum
combined tank stress, including saddle
horn and bending stresses, to 1.5 times
the maximum allowable hoop stress in
still water, and to the yield strength of
the tank material or 70 percent of the
minimum ultimate tensile strength of
the tank material, if less, in the
grounded condition as required by
§ 32.63–20(b).
(ii) Gravity type cargo tanks shall
have sufficient additional strength to
limit the maximum combined tank
stress, including saddle horn and bending stresses, to the yield strength of
the tank material or 70 percent of the
minimum ultimate tensile strength of
the tank material, if less, in the
grounded condition as required by
§ 32.63–20(b).
(2) Type III barge hulls. In addition to
the requirements of this paragraph,
pressure vessel-type cargo tanks shall
have sufficient additional strength so
as to limit the maximum combined
stress, including saddle horn and bending stresses, to 1.5 times the maximum
allowable hoop stress.

Subpart 32.65—Hull Requirements
for Tank Vessels Constructed
On or After November 10,
1936, and Prior to July 1,
1951
§ 32.65–1

Application—TB/ALL.

The requirements in this subpart
apply to all tank vessels, the construction or conversion of which was started
on or after November 10, 1936, and prior
to July 1, 1951.

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§ 32.65–5

46 CFR Ch. I (10–1–14 Edition)

§ 32.65–5 Scantlings,
material,
workmanship—TB/ALL.

and

The hull and deck houses shall be of
steel or iron construction except that
the pilothouse and decks over quarters
may
be
constructed
of
wood.
Scantlings, material, and workmanship, subdivision of cargo spaces, fitting of cofferdams, and testing of tanks
shall be at least equivalent to the requirements of the American Bureau of
Shipping or other recognized classification society.
§ 32.65–10 Subdivision of cargo space—
TB/ALL.
The cargo space shall be divided into
tight compartments as necessary to
avoid excessive stresses and to provide
stability.
§ 32.65–15

Cofferdams—TB/ALL.

Tank vessels equipped to carry Grade
A, B, C, or D liquids shall have their
galleys, living quarters, general cargo
spaces, boiler rooms, and enclosed
spaces containing propelling machinery or other machinery where sources
of vapor ignition are normally present,
segregated from their cargo tanks by
cofferdams or equivalent pumprooms,
tanks, or air spaces.
§ 32.65–20

Pumprooms—TB/ALL.

(a) Tank vessels handling Grade A, B,
C, or D liquids shall have their cargo
pumps isolated from all sources of
vapor ignition by gastight bulkheads.
Totally enclosed motors of the ‘‘explosion proof’’ type, motors ventilated on
both the intake and exhaust by ducts
to atmosphere, and engines driven by
steam shall not be considered to be
sources of vapor ignition. The gastight
bulkhead between the pumproom and
the pump-engine compartment may be
pierced by fixed lights, drive shaft and
pump-engine control rods, provided
that the shafts and rods are fitted with
stuffing boxes where they pass through
the gastight bulkheads. The access to a
cargo pumproom handling such liquids
shall be from the open deck. (See
§ 32.60–20.0.)
§ 32.65–25

Living quarters—TB/ALL.

Partitions and sheathing shall be of
approved fire-resistive construction.

§ 32.65–30 Tank vessels with
pendent tanks—TB/ALL.

Independent cargo tanks may be located in hold spaces or in other cargo
tanks but in all cases a working space
of at least 15 inches shall be provided
around such independent tanks, or else
provisions shall be made for moving
them to secure such space. When independent cargo tanks are located in an
enclosed space other than a cargo tank,
such enclosed space shall be considered
as equivalent to a pumproom, and shall
be safeguarded as such, as required in
the regulations in this subchapter.
§ 32.65–35 Tank vessels carrying Grade
A liquids—TB/ALL.
Cargo tanks for Grade A liquids having a Reid vapor pressure in excess of
25 pounds shall be independent of the
hull.
§ 32.65–40 Construction and testing of
cargo tanks and bulkheads—TB/
ALL.
(a) All cargo tanks to be vented at
gage pressures of 4 pounds per square
inch or less shall be constructed and
tested as required by the requirements
of the American Bureau of Shipping or
other recognized classification society.
(b) All cargo tanks to be vented at
gage pressures above 4 pounds per
square inch shall be considered as pressure vessels and shall meet the requirements for such vessels as to construction and testing, as set forth in subchapter F (Marine Engineering) of this
chapter.
(c) Gastight bulkheads shall be subjected to a thorough hose test.
[CGFR 65–50, 30 FR 16671, Dec. 30, 1965, as
amended by CGFR 68–82, 33 FR 18805, Dec. 18,
1968]

Subpart 32.70—Hull Requirements
for Steel Hull Tank Vessels
Constructed Prior to November 10, 1936
§ 32.70–1

Application—TB/ALL.

All steel hull tank vessels, the construction or conversion of which was
started prior to November 10, 1936,
shall conform to the requirements in
this subpart.

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Coast Guard, DHS

§ 32.75–10

§ 32.70–5 Hull requirements; general—
TB/ALL.
The scantlings, material, and workmanship, the subdivision of cargo
spaces, the arrangement of cofferdams,
the testing of tanks and cofferdams,
shall be at least equivalent to the requirements of a recognized classification society for the particular service
specified in the application for the certificate of inspection and permit for
the transportation of liquid flammable
cargoes in bulk as of the date when the
tank vessel was built or as of the date
when the vessel was converted into a
tank vessel. In the absence of such
classification requirements, the Officer
in Charge, Marine Inspection, shall satisfy himself that the vessel’s structure
as specified in this section is safe for
the service to be specified in its certificate of inspection.
[CGFR 66–33, 31 FR 15268, Dec. 6, 1966]

§ 32.70–10

Cofferdams—TB/ALL.

Tank vessels carrying Grade A, B, or
C liquids shall be required to conform
to the construction requirements in regard to vertical cofferdams in § 32.65–15,
except that a dry cargo compartment
shall be considered to be equivalent to
a cofferdam, and except as provided for
in § 32.70–20.
§ 32.70–15

Pumprooms—TB/ALL.

Tank vessels handling Grade A, B, C
or D liquid cargo shall meet the requirements for tank vessels in § 32.65–20
except that the electrical installation
shall comply with the requirements of
§ 32.45–10(c).
§ 32.70–20 Pump-engine
ment—TB/ALL.

compart-

No cofferdam will be required between a cargo tank and a compartment
containing pumping engines and their
auxiliaries which are used exclusively
during pumping operations, provided
the pumping engine compartment contains no cargo valves and is well ventilated and provided further that internal combustion exhaust within the
compartment are completely water
jacketed or insulated and that gasoline
engine intakes are fitted with effective
flame arresters.

§ 32.70–25

Cargo tanks—TB/ALL.

Cargo tanks shall comply with the
conditions specified in §§ 32.65–30 and
32.65–35, and shall pass the tests required in § 32.65–40: Provided, however,
That less than 15 inches around such
tanks may be accepted if in the judgment of the Officer in Charge, Marine
Inspection, making the inspection, a
satisfactory inspection of the cargo
tanks and hull structure can be made.

Subpart 32.75—Hull Requirements
for Wood Hull Tank Vessels
Constructed Prior to November 10, 1936
§ 32.75–1

Application—TB/ALL.

All wood hull tank vessels, the construction or conversion of which was
started prior to November 10, 1936,
shall conform to the requirements in
this subpart.
§ 32.75–5 Hull requirements; general—
TB/ALL.
The scantlings, material, and workmanship, and the fitting and fastening
of parts shall be at least equivalent to
the requirements of a recognized classification society for the particular
service specified in the application for
certificate of inspection and permit for
the transportation of liquid flammable
cargoes in bulk as of the date when the
tank vessel was built, or as of the date
when the vessel was converted into a
tank vessel. In the absence of such
classification requirements, the Officer
in Charge, Marine Inspection, shall satisfy himself that the vessel’s structure
as specified in this section is safe for
the service to be specified in its certificate of inspection.
§ 32.75–10

Cargo tanks—TB/ALL.

Cargo tanks shall be independent of
the wood hull, shall be made of steel or
iron, and shall pass the tests required
in § 32.65–40 (a), (b). Where cargo tanks
in wood hulls are not arranged to provide working space around them they
shall be so constructed as to allow inspection of the hull, tanks, and bilges,
and they shall be so installed that they
can be moved to allow repairs to the
hull structure and to themselves.

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§ 32.75–15

46 CFR Ch. I (10–1–14 Edition)

§ 32.75–15 Electric
bonding
grounding for tanks—TB/ALL.

and

All independent cargo tanks in wood
hull tank vessels shall be electrically
bonded together with stranded copper
cable of not less than No. 4B and S
gage and one end of this cable shall be
grounded to a copper or brass plate of
not less than 2 square feet in area and
one-sixteenth inch in thickness and
this plate shall be securely fastened to
the hull, on the outside, at a point
where it shall be covered by water
when the tank vessel is unloaded.
§ 32.75–20 Hold
spaces
heads—TB/ALL.

and

bulk-

In wood hull tank vessels containing
independent cargo tanks for the transportation of Grade A, B, C, or D liquids,
the hold spaces shall be considered as
equivalent to a pumproom and shall be
safeguarded and ventilated as such as
required by § 32.65–20. Where the hold
spaces contain equipment or operations
which are sources of vapor ignition,
such equipment or operations shall be
isolated from other spaces by gastight
bulkhead or, if it is impracticable to
construct a gastight bulkhead, two
structurally tight bulkheads without
openings, separated by a well-ventilated air space 24 inches wide, where
possible may be used.

Subpart 32.80—Tank Barges Constructed of Materials Other
Than Steel or Iron
§ 32.80–1 General
ALL.

requirements—B/

All tank barges with hulls constructed of materials other than iron
or steel, the construction or conversion
of which was started prior to September 2, 1945, and to which certificates of inspection were issued prior to
March 2, 1946, shall be considered the
same as tank barges constructed prior
to November 10, 1936.

Subpart 32.85—Lamp and Paint
Rooms and Similar Compartments on Tankships
§ 32.85–1 Fireproofing of lamp, oil and
paint rooms—T/ALL.
Lamp, oil and paint rooms shall be
wholly and tightly lined with metal.

Subpart 32.90—Pilot Boarding
Equipment
§ 32.90–1 Pilot boarding equipment.
(a) This section applies to each vessel
that normally embarks or disembarks
a pilot from a pilot boat or other vessel.
(b) Each vessel must have suitable
pilot boarding equipment available for
use on each side of the vessel. If a vessel has only one set of equipment, the
equipment must be capable of being
easily transferred to and rigged for use
on either side of the vessel.
(c) Pilot boarding equipment must be
capable of resting firmly against the
vessel’s side and be secured so that it is
clear from overboard discharges.
(d) Each vessel must have lighting
positioned to provide adequate illumination for the pilot boarding equipment and each point of access.
(e) Each vessel must have a point of
access that has:
(1) A gateway in the rails or bulwark
with adequate handholds; or
(2) Two handhold stanchions and a
bulwark ladder that is securely attached to the bulwark rail and deck.
(f) The pilot boarding equipment required by paragraph (b) of this section
must include at least one pilot ladder
approved under subpart 163.003 of this
chapter. Each pilot ladder must be of a
single length and capable of extending
from the point of access to the water’s
edge during each condition of loading
and trim, with an adverse list of 15°.
(g) Whenever the distance from the
water’s edge to the point of access is
more than 30 feet, access from a pilot
ladder to the vessel must be by way of
an accommodation ladder or equally
safe and convenient means.
(h) Pilot hoists, if used, must be approved under subpart 163.002 of this
chapter.
[CGD 79–032, 49 FR 25455, June 21, 1984]

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Coast Guard, DHS

§ 34.01–1
Subpart 34.20—Deck Foam System, Details

PART 34—FIREFIGHTING
EQUIPMENT
Subpart 34.01—General
Sec.
34.01–1 Applicability—TB/ALL, preemptive
effect.
34.01–5 Equipment installed but not required—TB/ALL.
34.01–10 Protection for unusual arrangements or special products—TB/ALL.
34.01–15 Incorporation by reference.

Subpart 34.05—Firefighting Equipment,
Where Required
34.05–1 Fire main system—T/ALL.
34.05–5 Fire extinguishing systems—T/ALL.
34.05–10 Portable and semiportable extinguishers—TB/ALL.
34.05–20 Fire axes—T/ALL.

34.20–1 Application—T/ALL.
34.20–3 Cargo area definition—T/ALL.
34.20–5 Quantity of foam required—T/ALL.
34.20–10 Controls—T/ALL.
34.20–15 Piping—T/ALL.
34.20–20 Discharge outlets—T/ALL.
34.20–25 Foam monitor capacity—T/ALL.
34.20–90 Installations contracted for prior to
January 1, 1970—T/ALL.

Subpart 34.25—Water Spray Extinguishing
Systems, Details
34.25–1 Application—T/ALL.
34.25–5 Capacity and arrangement—T/ALL.
34.25–10 Controls—T/ALL.
34.25–15 Piping—T/ALL.
34.25–20 Spray nozzles—T/ALL.
34.25–90 Installations contracted for prior to
January 1, 1964—T/ALL.

Subpart 34.10—Fire Main System, Details
34.10–1 Application—TB/ALL.
34.10–5 Fire pumps—T/ALL.
34.10–10 Fire station hydrants, hose and nozzles—T/ALL.
34.10–15 Piping—T/ALL.
34.10–90 Installations contracted for prior to
May 26, 1965—T/ALL.

Subpart 34.13—Steam Smothering System
34.13–1

Application—T/ALL.

Subpart 34.15—Carbon Dioxide
Extinguishing Systems, Details
34.15–1 Application—T/ALL.
34.15–5 Quantity, pipe sizes, and discharge
rates—T/ALL.
34.15–10 Controls—T/ALL.
34.15–15 Piping—T/ALL.
34.15–20 Carbon dioxide storage—T/ALL.
34.15–25 Discharge outlets—T/ALL.
34.15–30 Alarms—T/ALL.
34.15–35 Enclosure openings—T/ALL.
34.15–40 Pressure relief—T/ALL.
34.15–50 Lockout valves—T/ALL.
34.15–60 Odorizing units—T/ALL.
34.15–90 Installations contracted for prior to
January 1, 1962—T/ALL.

Subpart 34.17—Fixed Foam Extinguishing
Systems, Details

Subpart 34.30—Automatic Sprinkler
Systems, Details
34.30–1

Application—TB/ALL.

Subpart 34.50—Portable and Semiportable
Extinguishers
34.50–1 Application—TB/ALL.
34.50–5 Classification—TB/ALL.
34.50–10 Location—TB/ALL.
34.50–15 Spare charges—TB/ALL.
34.50–20 Semiportable fire extinguishers—
TB/ALL.
34.50–90 Vessels contracted for prior to January 1, 1962—TB/ALL.

Subpart 34.60—Fire Axes
34.60–1 Application—T/ALL.
34.60–5 Number required—T/ALL.
34.60–10 Location—T/ALL.
AUTHORITY: 46 U.S.C. 3306, 3703; E.O. 12234,
45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation
No. 0170.1.
SOURCE: CGFR 65–50, 30 FR 16694, Dec. 30,
1965, unless otherwise noted.

Subpart 34.01—General

34.17–1 Application—T/ALL.
34.17–5 Quantity of foam required—T/ALL.
34.17–10 Controls—T/ALL.
34.17–15 Piping—T/ALL.
34.17–20 Discharge outlets—T/ALL.
34.17–25 Additional protection required—T/
ALL.
34.17–90 Installations contracted for prior to
January 1, 1962—T/ALL.

§ 34.01–1 Applicability—TB/ALL,
emptive effect.

(a) The provisions of this part shall
apply to all tank vessels except as otherwise noted in this part.

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§ 34.01–5

46 CFR Ch. I (10–1–14 Edition)

(b) The regulations in this part have
preemptive effect over State or local
regulations in the same field.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 88–032, 56 FR 35821, July 29,
1991; USCG–2006–24797, 77 FR 33873, June 7,
2012]

§ 34.01–5 Equipment installed but not
required—TB/ALL.
(a) Where firefighting equipment is
not required, but is installed, the
equipment and its installation shall be
of an approved type.
§ 34.01–10 Protection for unusual arrangements or special products—
TB/ALL.
(a) The provisions of this part contemplate fire protection for tank vessels of conventional design carrying
the usual liquid petroleum products in
internal tanks. Whenever unusual arrangements exist or special cargoes are
carried upon which the vessel’s normal
firefighting equipment will be ineffective, additional suitable firefighting
equipment of approved type shall be
carried.
§ 34.01–15 Incorporation by reference.
(a) Certain material is incorporated
by reference into this part with the approval of the Director of the Federal
Register under 5 U.S.C. 552(a) and 1
CFR part 51. To enforce any edition
other than that specified in this section, the Coast Guard must publish notice of change in the FEDERAL REGISTER and the material must be available to the public. All approved material is available for inspection at the
National Archives and Records Administration (NARA). For information on
the availability of this material at
NARA, call 202–741–6030 or go to http://
www.archives.gov/federallregister/
codeloflfederallregulations/
ibrllocations.html. Also, it is available
for inspection at the Coast Guard
Headquarters. Contact Commandant
(CG–ENG), Attn: Office of Design and
Engineering Systems, U.S. Coast Guard
Stop 7509, 2703 Martin Luther King Jr.
Avenue SE., Washington, DC 20593–7509,
telephone 202–372–1405, and is available
from the sources listed in this section.
(b) ASTM International, 100 Barr
Harbor Drive, P.O. Box C700, West

Conshohocken, PA 19428–2959, 877–909–
2786, http://www.astm.org.
(1) ASTM F1121–87 (Reapproved 2010),
Standard
Specification
for
International Shore Connections for Marine
Fire Applications, (approved March 1,
2010), incorporation by reference approved for § 34.10–15 (‘‘ASTM F 1121’’).
(2) [Reserved]
(c) National Fire Protection Association (NFPA), 1 Batterymarch Park,
Quincy, MA 02169–7471, telephone 617–
770–3000, http://www.nfpa.org.
(1) NFPA 13–1996, Standard for the Installation of Sprinkler Systems, IBR
approved for § 34.30–1 (‘‘NFPA 13–1996’’).
(2) NFPA 2001, Standard on Clean
Agent Fire Extinguishing Systems,
(2008 Edition), IBR approved for § 34.05–
5(a)(4) (‘‘NFPA 2001’’).
[USCG–2006–24797, 77 FR 33873, June 7, 2012, as
amended by USCG–2012–0866, 78 FR 13249,
Feb. 27, 2013; USCG–2013–0671, 78 FR 60147,
Sept. 30, 2013]

Subpart 34.05—Firefighting
Equipment, Where Required
§ 34.05–1 Fire main system—T/ALL.
(a) Fire pumps, piping, hydrants,
hose and nozzles shall be installed on
all tankships.
(b) The arrangements and details of
the fire main system shall be as set
forth in subpart 34.10.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 77–057a, 44 FR 66502, Nov.
19, 1979]

§ 34.05–5 Fire extinguishing systems—
T/ALL.
(a) Approved fire extinguishing systems must be installed on all tankships
in the following locations. Previously
approved installations may be retained
as long as they are maintained in good
condition to the satisfaction of the Officer in Charge, Marine Inspection.
(1) Dry cargo compartments. A carbon
dioxide or water spray system must be
installed for the protection of all dry
cargo compartments. Where such compartments are readily accessible by
means of doors such spaces need be protected only by the fire main system.
(2) Cargo tanks. A deck foam system
must be installed for the protection of
all cargo tank spaces. Where a deck
foam system is installed, an approved

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Coast Guard, DHS

§ 34.05–20

inert gas, steam or other system may
also be installed for the purposes of fire
prevention or inerting of cargo tanks.
For vessels under 100 feet in length, the
semiportable equipment required by
footnote 1 of table 34.05–5(a) will be
considered as meeting the requirements of this subparagraph.
(3) Lamp and paint lockers and similar
spaces. A carbon dioxide or clean agent
system as described in 46 CFR subpart
95.16 or a water spray system must be
installed in all lamp and paint lockers,
oil rooms, and similar spaces.
(4) Pump rooms. A carbon dioxide or
clean agent system as described in 46
CFR subpart 95.16, a foam spray system, or a water spray system must be
installed for the protection of all pump
rooms. If a clean agent system is installed for the pump room of a tank
ship carrying chemical cargos, the
amount of extinguishing agent must be
determined by using the agent design
concentration determined by the cup
burner method, described in NFPA 2001
(incorporated by reference; see § 34.01–
15) for the cargo requiring the greatest
amount of agent.
(5) Boiler rooms. On tankships contracted for on or after November 19,
1952, a carbon dioxide or clean agent
system as described in 46 CFR subpart
95.16 or a foam system must be installed to protect any space containing
a main or auxiliary oil fired boiler, the
boiler fuel oil service pump, or any fuel
oil units such as heaters, strainers,
valves, manifolds, etc., that are subject
to the discharge pressure of the fuel oil
service pumps.
(6) Machinery spaces. A carbon dioxide
or clean agent system as described in
46 CFR subpart 95.16 must be installed
to protect any machinery space containing an internal combustion-propelling engine that uses fuel having a
flashpoint of less than 110 degrees
Fahrenheit.
(7) Internal combustion installations. A
fire extinguishing system must be provided for an internal combustion installation and:
(i) The system must be a carbon dioxide or clean agent system as described
in 46 CFR subpart 95.16;
(ii) On vessels of 1,000 gross tons and
over on an international voyage, the
construction or conversion of which is

contracted for on or after May 26, 1965,
a carbon dioxide or clean agent system
as described in 46 CFR subpart 95.16
must be installed in any space containing internal combustion or gas turbine main propulsion machinery, auxiliaries with an aggregate power of 1,000
b.h.p. or greater, or their fuel oil units,
including purifiers, valves, and manifolds; and
(iii) On vessels of 1,000 gross tons and
over, the construction, conversion or
automation of which is contracted for
on or after January 1, 1968, a carbon dioxide or clean agent system as described in 46 CFR subpart 95.16 must be
installed in any space containing internal combustion or gas turbine main
propulsion machinery, auxiliaries with
an aggregate power of 1,000 b.h.p. or
greater, or their fuel oil units, including purifiers, valves and manifolds.
(8) Enclosed ventilating system. On
tankships contracted for on or after
January 1, 1962, where an enclosed ventilating system is installed for electric
propulsion motors or generators, a carbon dioxide extinguishing system shall
be installed in such system.
(b) The arrangements and details of
the fire-extinguishing systems shall be
as set forth in subparts 34.10 through
34.20.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGFR 67–90, 33 FR 1015, Jan. 26,
1968; CGD 77–057a, 44 FR 66502, Nov. 19, 1979;
CGD 95–027, 61 FR 25998, May 23, 1996; USCG–
2006–24797, 77 FR 33873, June 7, 2012]

§ 34.05–10 Portable and semiportable
extinguishers—TB/ALL.
(a) All portable and semiportable extinguishers on board tank vessels shall
be of an approved type.
(b) The type, size, location and arrangement
of
portable
and
semiportable extinguishers shall be as
set forth in subpart 34.50.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGFR 70–143, 35 FR 19905, Dec.
30, 1970]

§ 34.05–20

Fire axes—T/ALL.

(a) Fire axes shall be provided on all
tankships.
(b) The location and arrangement of
fire axes shall be as set forth in subpart
34.60.

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§ 34.10–1

46 CFR Ch. I (10–1–14 Edition)

Subpart 34.10—Fire Main System,
Details
§ 34.10–1 Application—TB/ALL.
(a) On all tankships the provisions of
this subpart, with the exception of
§ 34.10–90, shall apply to all fire main
installations contracted for on or after
May 26, 1965. Installations contracted
for prior to May 26, 1965, shall meet the
requirements of § 34.10–90.
(b) If a fire main system is installed
on a tank barge, the system shall meet
the intent of this subpart insofar as
reasonable and practicable.
§ 34.10–5 Fire pumps—T/ALL.
(a) Tankships shall be equipped with
independently driven fire pumps in accordance with table 34.10–5(a).
TABLE 34.10–5(a)—FIRE PUMPS
Size vessel,
L.O.A. (feet)
Over—

Not
over—

100
250
400
650

100
250
400
650
...........

Minimum
number of
pumps

Powerful
streams
of water
per pump

(1)

................
32
32
32
33

21

2
2
2

Minimum hydrant and hose
size (inches)
Exterior
stations

Interior
stations

............
11⁄2
11⁄2
4 21⁄2
4 21⁄2

............
11⁄2
11⁄2
11⁄2
11⁄2

1 Vessels of 65 feet and not over 100 feet shall be equipped
with 2 B-V extinguishers. (Refer to table 34.50–5(c).) Vessels
under 65 feet shall be equipped with 1 B-V extinguisher.
(Refer to table 34.50–5(c).)
2 Vessels of 1,000 gross tons and over on an international
voyage shall have at least 2 fire pumps.
3 From hydrants having greatest pressure drop between
fire-pump(s) and nozzles.
4 Where 21⁄2-inch hydrant size is required, two 11⁄2-inch outlets may be substituted therefor with two 11⁄2-inch hoses.

(b) Each pump shall be capable of delivering simultaneously the number of
streams of water required by table
34.10–5(a) from the outlets having the
greatest pressure drop between fire
pump(s) and nozzles at a Pitot tube
pressure of approximately 75 p.s.i.
Where 11⁄2-inch hose is permitted in lieu
of 21⁄2-inch hose by footnote 3 of table
34.10–5(a), the pump capacity shall be
determined on the basis that both
hoses are used.
(c) On tankships of 1,000 gross tons
and over on an international voyage,
each required fire pump, while delivering water through the fire main system at a pressure corresponding to
that required by § 34.10–15(e), shall have
a minimum capacity of at least twothirds of that required for an inde-

pendent bilge pump if no length correction is taken for the cargo tank space.
However, in no case shall the capacity
of each fire pump be less than that otherwise required by this section.
(d) Fire pumps shall be fitted on the
discharge side with relief valves set to
relieve at 25 p.s.i. in excess of the pressure necessary to maintain the requirements of paragraph (b) of this section.
(e) Fire pumps shall be fitted with a
pressure gage on the discharge side of
the pumps.
(f) Fire pumps may be used for other
purposes provided at least one of the
required pumps is kept available for
use on the fire system at all times. In
no case shall a pump having connection
to an oil line be used as a fire pump.
Branch lines connected to the fire main
for purposes other than fire and deck
wash shall be arranged so that the requirements of paragraph (b) of this section and any other services installed on
the fire main can be met simultaneously.
(g) On all vessels where two fire
pumps are required, they shall be located in separate spaces, and the arrangement of pumps, sea connections,
and sources of power shall be such as to
insure that a fire in any one space will
not put all of the fire pumps out of operation. However, where it is shown to
the satisfaction of the Commandant
that it is unreasonable or impracticable to meet this requirement due to
the size, or arrangement of the vessel,
or for other reasons, the installation of
a total flooding carbon dioxide system
may be accepted as an alternate method of extinguishing any fire which
would affect the powering and operation of at least one of the required fire
pumps.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 95–028, 62 FR 51199, Sept. 30,
1997]

§ 34.10–10 Fire station hydrants, hose
and nozzles—T/ALL.
(a) The size of fire station hydrants
and hose required shall be as noted in
table 34.10–5(a).
(b) Fire hydrants shall be of sufficient number and so located that any
part of living quarters, storerooms,
working spaces and weather decks accessible to crew while at sea may be

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Coast Guard, DHS

§ 34.10–10

reached with two effective spray patterns of water, one of which shall be
from a single 50-foot length of hose. In
main machinery spaces all portions of
such spaces shall be capable of being
reached by at least 2 effective spray
patterns of water, each of which shall
be from a single 50-foot length of hose
from separate outlets.
(c) The outlets at the fire station hydrant shall be limited to any position
from the horizontal to the vertical
pointing downward so that hose will
lead horizontally or downward to minimize possibility of kinking.
(d) All fire station hydrants shall be
equipped with spanners suitable for use
on the hose at that station.
(e) Each fire station hydrant must
have at least 1 length of firehose. Each
firehose on the hydrant must have a
combination solid stream and water
spray firehose nozzle that meets the requirements in subpart 162.027 of this
chapter. Firehose nozzles previously
approved under subpart 162.027 of this
chapter may be retained so long as
they are maintained in good condition
to the satisfaction of the Officer in
Charge, Marine Inspection. A suitable
hose rack or other device must be provided. Hose racks on weather decks
must be located to afford protection
from heavy seas. The hose must be
stored in a location that is readily visible.
TABLE 34.10–10(e) HYDRANTS WITH COAST
GUARD APPROVED LOW-VELOCITY WATER
SPRAY APPLICATORS
Location

Number of hydrants with approved applicators

Living space ..............
Weather deck ............
Machinery space .......

Approved
applicator
length (feet)

1
4
2

4
10 or 12
4

(f) Each combination firehose nozzle
previously approved under subpart
162.027 of this chapter in the locations
listed in table 34.10–10(E) must have a
low-velocity water spray applicator
also previously approved under subpart
162.027 of this chapter that is of the
length listed in that table.
(g) The pipes and fire station hydrants shall be so placed that the fire
hose may be easily coupled to them.
All hydrants shall be so located as to
be readily accessible. If deck cargo is

carried, it shall not interfere with access to the fire station hydrants, and
the pipes shall be arranged as far as
practicable to avoid risk of damage by
such cargo.
(h) Each fire station hydrant or ‘‘y’’
branch shall be equipped with a valve
so that the hose may be removed while
there is pressure on the fire main.
(i) Fire station hydrant connections
shall be brass, bronze, or other equivalent metal. Couplings shall either:
(1) Use National Standard fire hose
coupling threads for the 11⁄2 inch (38
millimeter) and 21⁄2 inch (64 millimeter)
hose sizes, i.e. 9 threads per inch for 11⁄2
inch hose, and 71⁄2 threads per inch for
21⁄2 inch hose; or
(2) Be a uniform design for each hose
diameter throughout the vessel.
(j) Fire hose shall be 50 feet in length
except on weather decks the hose shall
be increased in length if necessary to
enable a single length to be goosenecked over each side of the vessel. If
two fire mains are installed on the
weather decks, the length of hose shall
be such that it may be goose-necked
over the side from the nearest fire
main.
(k) Fire hose when part of the fire
equipment shall not be used for any
other purpose than fire extinguishing,
fire drills, and testing.
(l) Fire hose shall be connected to
outlets at all times. However, in heavy
weather on open decks where no protection is afforded the hose may be removed temporarily from the hydrant
and stowed in an accessible location
nearby. While in port, fire hose in way
of cargo area shall be kept ready for
immediate use. The fire hose may be
temporarily removed when it will
interfere with the handling of cargo.
(m) Each section of fire hose used
after January 1, 1980 must be lined
commercial fire hose that conforms to
Underwriters’ Laboratories, Inc. Standard 19 or Federal Specification ZZ-H451E. Hose that bears the label of Underwriters’ Laboratories, Inc. as lined
fire hose is accepted as conforming to
this requirement. Each section of replacement fire hose or any section of
new fire hose placed aboard a vessel
after January 1, 1977 must also conform
to the specification required by this
paragraph.

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§ 34.10–15

46 CFR Ch. I (10–1–14 Edition)

(n) Coupling shall conform to the requirements of paragraph (h) of this section.
(o) Each low-velocity water spray applicator under paragraph (f) of this section must have fixed brackets, hooks,
or other means for stowing next to the
hydrant.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 74–60, 41 FR 43151, Sept. 30,
1976; CGD 76–086, 44 FR 2391, Jan. 11, 1979;
CGD 95–027, 61 FR 25999, May 23, 1996; CGD 95–
028, 62 FR 51199, Sept. 30, 1997]

§ 34.10–15

Piping—T/ALL.

(a) All piping, valves and fittings
shall meet the applicable requirements
of subchapter F (Marine Engineering)
of this chapter.
(b) An adequate number of valves
shall be installed to isolate damaged
sections of piping except on self-propelled vessels carrying bulk liquefied
gases that must have stop valves:
(1) At cross connections;
(2) At the front of the after deck
house; and
(3) In the cargo area spaced 40 m (131
ft.) or less between hydrants.
(c) All distribution valves shall be
marked as required by § 35.40–10 of this
subchapter.
(d) Tankships of 500 gross tons and
over on an international voyage must
be provided with at least one international shore connection which meets
ASTM F 1121 (incorporated by reference, see § 34.01–15). Facilities must
be available enabling such a connection to be used on either side of the
vessel.
(e) For tankships on an international
voyage, the diameter of the fire main
shall be sufficient for the effective distribution of the maximum required discharge from two fire pumps operating
simultaneously. This requirement is in
addition to § 34.10–5(b). The discharge of
this quantity of water through hoses
and nozzles at a sufficient number of
adjacent hydrants shall be at a minimum Pitot tube pressure of approximately 71 pounds per square inch on
self-propelled vessels that carry bulk
liquefied gases and approximately 50

pounds per square inch on other tankships.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 74–289, 44 FR 26006, May 3,
1979, CGD 88–032, 56 FR 35821, July 29, 1991;
USCG-2000–7790, 65 FR 58459, Sept. 29, 2000]

§ 34.10–90 Installations contracted for
prior to May 26, 1965—T/ALL.
(a) Installations contracted for prior
to January 1, 1962, shall meet the following requirements:
(1) Existing arrangements, materials
and facilities previously approved shall
be considered satisfactory so long as
they meet the minimum requirements
of this paragraph and they are maintained in good condition to the satisfaction of the Officer in Charge, Marine
Inspection. Minor repairs and alterations may be made to the same standards as the original installation.
(2) Except as further modified by this
paragraph, the details of the systems
shall be in general agreement with
§§ 34.10–5 through 34.10–15 insofar as is
reasonable and practicable.
(3) Tankships of less than 500 gross
tons shall be equipped with an efficient
hand pump capable of delivering 50 gallons per minute or a power-driven
pump of equivalent capacity. However,
on tankships of 20 gross tons or under
where it is impracticable to install a
hand or power-operated fire pump, or
on tankships with only one man in the
crew, at least one additional B-II fire
extinguisher may be accepted in lieu of
a fire pump.
(4) Tankships of 500 gross tons and
over but not over 1,000 gross tons shall
be provided with one independently
power-driven pump.
(5) Tankships of over 1,000 gross tons
shall be provided with two independently power-driven pumps.
(6) On tankships of 500 gross tons and
over, the capacity of the combined fire
pump installation shall be one-fifth
gallon per minute per gross ton of the
ship. The maximum total fire pump capacity required for any tankship shall
be 800 gallons per minute.
(7) Each fire pump on a tankship of
500 gross tons or more must deliver
enough water to the fire main so that
the topmost outlet on the fire main
emits two jets of water at a Pitot tube
pressure of 50 pounds per square inch

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Coast Guard, DHS

§ 34.15–1

through two combination solid stream
and water spray firehose nozzles meeting paragraph (10) of this section.
(8) On oil-burning tankships, provided with two fire pumps, where the
engine and fire rooms are not entirely
separated by iron or steel bulkheads, or
if fuel can drain from fireroom bilges
into the engineroom, one of the fire
pumps shall be located in an accessible
space separate from the machinery
compartment. On all tankships contracted for on or after November 19,
1952, the requirements of paragraph (f)
of § 34.10–5 shall be met.
(9) Fire hydrant outlets shall have a
minimum diameter of 11⁄2 inches.
(10) Each fire station hydrant on a
tankship of 500 gross tons or more must
have at least 1 length of firehose. Each
firehose on the hydrant must have a
combination solid stream and water
spray firehose nozzle that meets the requirements of subpart 162.027. Firehose
nozzles previously approved under subpart 162.027 of this chapter may be retained so long as they are maintained
in good condition to the satisfaction of
the Officer in Charge, Marine Inspection.
(11) On each tankship of 1000 gross
tons or more, the firehose nozzle required by paragraph (a)(10) of this section on each of the following hydrants
must have a low-velocity water-spray
applicator that was previously approved under subpart 162.027 and that
connects to that nozzle when the nozzle
itself was previously approved under
subpart 162.027—
(i) At least two hydrants in the Machinery and boiler spaces; and
(ii) At least 25 percent of other hydrants.
(12) Vessels contracted for on or after
July 1, 1954, shall meet the requirements of § 34.10–10(h).
(b) Installations contracted for on or
after January 1, 1962, but prior to May
26, 1965, shall meet the following requirements:
(1) Existing arrangements, materials,
facilities, and equipment, except firehose nozzles, previously approved shall
be considered satisfactory as long as
they meet the minimum requirements
of this paragraph and they are maintained in good conditions to the satisfaction of the Officer in Charge, Marine

Inspection. Minor repairs and alterations may be made to the same standards as the original installation.
(2) Each fire station hydrant must
have at least 1 length of firehose. Each
firehose on the hydrant must have a
combination solid stream and water
spray firehose nozzle that meets the requirements of subpart 162.027. Firehose
nozzles previously approved under subpart 162.027 of this chapter may be retained so long as they are maintained
in good condition to the satisfaction of
the Officer in Charge, Marine Inspection. If the firehose nozzles were previously approved under subpart 162.027,
each of the number of hydrants in the
locations listed in table 34.10–10(E)
must have a low-velocity water spray
applicator that—
(i) Was previously approved under
subpart 162.027 of this chapter;
(ii) Is the length listed in table 34.10–
10(E); and
(iii) Meets § 34.10–10(o).
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 76–086, 44 FR 2391, Jan. 11,
1979; CGD 95–027, 61 FR 25999, May 23, 1996]

Subpart 34.13—Steam Smothering
Systems
SOURCE: CGD 95–027, 61 FR 25999, May 23,
1996, unless otherwise noted.

§ 34.13–1 Application—T/ALL.
Steam smothering fire extinguishing
systems are not permitted on vessels
contracted for on or after January 1,
1962. Previously approved installations
may be retained as long as they are
maintained in good condition to the
satisfaction of the Officer in Charge,
Marine Inspection.

Subpart 34.15—Carbon Dioxide
Extinguishing Systems, Details
§ 34.15–1 Application—T/ALL.
(a) Where a carbon dioxide extinguishing system is installed, the provisions of this subpart, with the exception of § 34.15–90, shall apply to all installations contracted for on or after
January 1, 1962. Installations contracted for prior to January 1, 1962,
shall meet the requirements of § 34.15–
90.

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§ 34.15–5

46 CFR Ch. I (10–1–14 Edition)

(b) The requirements of this subpart
are based on a ‘‘high pressure system,’’
i.e., one in which the carbon dioxide is
stored in liquid form at atmospheric
temperature. Details for ‘‘low pressure
systems,’’ i.e., those in which the carbon dioxide is stored in liquid form at
a continuously controlled low temperature, may be specifically approved by
the Commandant where it is demonstrated that a comparable degree of
safety and fire extinguishing ability is
achieved.
§ 34.15–5 Quantity, pipe sizes, and discharge rates—T/ALL.
(a) General. (1) The amount of carbon
dioxide required for each space shall be
as determined by paragraphs (b)
through (d) of this section.
(b) Total available supply. (1) A separate supply of carbon dioxide need not
be provided for each space protected.
The total available supply shall be at
least sufficient for the space requiring
the greatest amount.
(c) Dry cargo spaces. (1) The number
of pounds of carbon dioxide required for
each space shall be equal to the gross
volume of the space in cubic feet divided by 30.
(2) Although separate piping shall be
led to each cargo hold and ’tween deck,
for the purpose of determining the
amount of carbon dioxide required, a
cargo compartment will be considered
as the space between watertight or
firescreen bulkheads and from the tank
top or lowest deck to the deck head of
the uppermost space on which cargo
may be carried. If a trunk extends beyond such deck, the trunk volume shall
be included. Tonnage openings shall be
considered as sealed for this purpose.
(3) Branch lines to the various cargo
holds and ’tween decks shall not be less
than 3⁄4-inch standard pipe size.
(4) No specific discharge rate need be
applied to such systems.
(d) Machinery spaces, pumprooms,
paint lockers, and similar spaces. (1) Except as provided in paragraph (d)(4) of
this section, the number of pounds of
carbon dioxide required for each space
shall be equal to the gross volume of
the space divided by the appropriate
factor noted in table 34.15–5(d)(1). If
fuel can drain from the compartment
being protected to an adjacent com-

partment, or if the compartments are
not entirely separate, the requirements
for both compartments shall be used to
determine the amount of carbon dioxide to be provided. The carbon dioxide
shall be arranged to discharge into
both such compartments simultaneously.
TABLE 34.15–5(d)(1)
Gross volume of compartment, cubic
feet
Over
500
1,600
4,000
50,000

500
1,600
4,500
50,000
..............................

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16
18
20
22

(2) For the purpose of the above requirement of this paragraph, the volume of a machinery space shall be
taken as exclusive of the normal machinery casing unless the boiler, internal combustion propelling machinery,
or fuel oil installations subject to the
discharge pressure of the fuel oil service pump extend into such space, in
which case the volume shall be taken
to the top of the casing or the next material reduction in casing area, whichever is lower. The terms ‘‘normal machinery casing’’ and ‘‘material reduction in casing area’’ shall be defined as
follows:
(i) By ‘‘normal machinery casing’’
shall be meant a casing the area of
which is not more than 40 percent of
the maximum area of the machinery
space.
(ii) By ‘‘material reduction in casing
area’’ shall be meant a reduction to at
least 40 percent of the casing area.
(3) For the purpose of the above requirements of this paragraph, the volume of a pumproom shall include the
pumproom and all associated trunks up
to the deck at which access from the
weather is provided.
(4) For tankships on an international
voyage contracted for on or after May
26, 1965, the amount of carbon dioxide
required for a space containing propulsion boilers or internal combustion
propulsion machinery shall be as given
by paragraphs (d) (1) and (2) of this section or by dividing the entire volume,
including the casing, by a factor of 25,
whichever is the larger.

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Coast Guard, DHS

§ 34.15–10

(5) Branch lines in the various spaces
shall be noted in table 34.15–5(d)(5).
TABLE 34.15–5(d)(5)
Maximum quantity of carbon dioxide required,
pounds

Minimum
pipe
sizes,
inches

Maximum quantity of carbon dioxide required,
pounds

Minimum
pipe size
inches

⁄
⁄

2,500
4,450
7,100
10,450
15,000
...........................

21⁄2
3
31⁄2
4
41⁄2
................

100
225
300
600
1,000
2,450

12
34

1
11⁄4
11⁄2
2

(6) Distribution piping within the
space shall be proportioned from the
supply line to give proper distribution
to the outlets without throttling.
(7) The number, type and location of
discharge outlets shall be such as to
give a uniform distribution throughout
the space.
(8) The total area of all discharge
outlets shall not exceed 85 percent nor
be less than 35 percent of the nominal
cylinder outlet area or the area of the
supply pipe, whichever is smaller. The
nominal cylinder outlet area in square
inches shall be determined by multiplying the factor 0.0022 by the number
of pounds of carbon dioxide required,
except that in no case shall this outlet
area be less than 0.110 square inches.
(9) The discharge of at least 85 percent of the required amount of carbon
dioxide shall be complete within 2 minutes.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended at 45 FR 64188, Sept. 29, 1980; CGD
95–028, 62 FR 51199, Sept. 30, 1997; USCG-1999–
6216, 64 FR 53223, Oct. 1, 1999]

§ 34.15–10 Controls—T/ALL.
(a) Except as noted in § 34.15–20(b), all
controls and valves for the operation of
the system shall be outside the space
protected, and shall not be located in
any space that might be cut off or
made inaccessible in the event of fire
in any of the spaces protected.
(b) If the same cylinders are used to
protect more than one space, a manifold with normally closed stop valves
shall be used to direct the carbon dioxide into the proper space. If cylinders
are used to protect only one space, a
normally closed stop valve shall be installed between the cylinders and the
space except for systems of the type in-

dicated in § 34.15–5(d) which contain not
more than 300 pounds of carbon dioxide.
(c) Distribution piping to the dry
cargo spaces shall be controlled from
not more than two stations. One of the
stations controlling the system for the
main machinery space shall be located
as convenient as practicable to one of
the main-escapes from the space. All
control stations and the individual
valves and controls shall be marked as
required by § 35.40–10 of the subchapter.
(d) Systems of the type indicated in
§ 34.15–5(d) shall be actuated at each
station by one control operating the
valve to the space and a separate control releasing at least the required
amount of carbon dioxide. These two
controls shall be located in a box or
other enclosure clearly identified for
the particular space. Systems installed
without a stop valve shall be operated
by one control releasing at least the required amount of carbon dioxide.
(e) Where provisions are made for the
simultaneous release of a given amount
of carbon dioxide by operation of a remote control, provisions shall also be
made for manual control at the cylinders. Where gas pressure from pilot
cylinders is used as a means for releasing the remaining cylinders, not less
than two pilot cylinders shall be used
for systems consisting of more than
two cylinders. Each of the pilot cylinders shall be capable of manual control at the cylinder, but the remaining
cylinders need not be capable of individual manual control.
(f) Systems of the type indicated in
§ 34.15–5(d), which are of more than 300
pounds of carbon dioxide shall be fitted
with an approved delayed discharge so
arranged that the alarm will be sounded for at least 20 seconds before the
carbon dioxide is released into the
space. Such systems of not more than
300 pounds of carbon dioxide shall also
have a similar delayed discharge, except for spaces which have a suitable
horizontal escape.
(g) All distribution valves and controls shall be of an approved type. All
controls shall be suitably protected.
(h) Complete but simple instructions
for the operation of the systems must
be located in a conspicuous place at or
near all pull boxes, stop valve controls

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§ 34.15–15

46 CFR Ch. I (10–1–14 Edition)

and in the CO2 cylinder storage room.
On systems in which the CO2 cylinders
are not within the protected space,
these instructions must also include a
schematic diagram of the system and
instructions detailing alternate methods of discharging the system should
the manual release or stop valve controls fail to operate. Each control valve
to branch lines must be marked to indicate the related space served.
(i) If the space or enclosure containing the carbon dioxide supply or
controls is to be locked, a key to the
space or enclosure shall be in a breakglass-type box conspicuously located
adjacent to the opening.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 74–100R, 40 FR 6208, Feb. 10,
1975; USCG-1999–6216, 64 FR 53223, Oct. 1, 1999]

§ 34.15–15 Piping—T/ALL.
(a) The piping, valves, and fittings
shall have a bursting pressure of not
less than 6,000 pounds p.s.i.
(b) All piping, in nominal sizes not
over 3⁄4-inch shall be at least Schedule
40 (standard weight) and in nominal
sizes over 3⁄4-inch, shall be at least
Schedule 80 (extra heavy).
(c) All piping, valves, and fittings of
ferrous materials shall be protected inside and outside against corrosion unless specifically approved otherwise by
the Commandant.
(d) A pressure relief valve or equivalent set to relieve between 2,400 and
2,800 pounds p.s.i. shall be installed in
the distributing manifold or such other
location as to protect the piping in the
event that all branch line shut- off
valves are closed.
(e) All deadend lines shall extend at
least 2 inches beyond the last orifice
and shall be closed with cap or plug.
(f) All piping, valves, and fittings
shall be securely supported, and where
necessary, protected against injury.
(g) Drains and dirt traps shall be
fitted where necessary to prevent the
accumulation of dirt or moisture.
Drains and dirt traps shall be located
in accessible locations where possible.
(h) Piping shall be used for no other
purpose except that it may be incorporated with the fire-detecting system.
(i) Piping passing through living
quarters shall not be fitted with drains
or other openings within such spaces.

(j) Installation test requirements are:
(1) Upon completion of the piping installation, and before the cylinders are
connected, a pressure test shall be applied as set forth in this paragraph.
Only carbon dioxide or other inert gas
shall be used for this test.
(2) The piping from the cylinders to
the stop valves in the manifold shall be
subjected to a pressure of 1,000 pounds
p.s.i. With no additional gas being introduced to the system, it shall be
demonstrated that the leakage of the
system is such as not to permit a pressure drop of more than 150 pounds per
square inch per minute for 2-minute period.
(3) The individual branch lines to the
various spaces protected shall be subjected to a test similar to that described in the preceding paragraph
with the exception that the pressure
used shall be 600 pounds p.s.i. in lieu of
1,000 pounds p.s.i. For the purpose of
this test, the distribution piping shall
be capped within the space protected at
the first joint ahead of the nozzles.
(4) In lieu of the tests prescribed in
the preceding paragraphs in this section, small independent systems protecting spaces such as emergency generator rooms, lamp lockers, etc., may
be tested by blowing out the piping
with the air at a pressure of at least 100
pounds p.s.i.
§ 34.15–20 Carbon dioxide storage—T/
ALL.
(a) Except as provided in paragraph
(b) of this section, the cylinders shall
be located outside the spaces protected,
and shall not be located in any space
that might be cut off or made inaccessible in the event of a fire in any of the
spaces protected.
(b) Systems of the type indicated in
§ 34.15–5(d), consisting of not more than
300 pounds of carbon dioxide, may have
the cylinders located within the space
protected. If the cylinder stowage is
within the space protected, the system
shall be arranged in an approved manner to be automatically operated by a
heat actuator within the space in addition to the regular remote and local
controls.
(c) The space containing the cylinders shall be properly ventilated and
designed to preclude an anticipated

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Coast Guard, DHS

§ 34.15–50

ambient temperature in excess of 130
degrees F.
(d) Cylinders shall be securely fastened and supported, and where necessary, protected against injury.
(e) Cylinders shall be so mounted as
to be readily accessible and capable of
easy removal for recharging and inspection. Provisions shall be available
for weighing the cylinders.
(f) Where subject to moisture, cylinders shall be so installed as to provide a space of at least 2 inches between the flooring and the bottom of
the cylinders.
(g) Cylinders shall be mounted in an
upright position or inclined not more
than 30 degrees from the vertical. However, cylinders which are fitted with
flexible or bent siphon tubes may be inclined not more than 80 degrees from
the vertical.
(h) Where check valves are not fitted
on each independent cylinder discharge, plugs or caps shall be provided
for closing outlets when cylinders are
removed for inspection or refilling.
(i) All cylinders used for storing carbon dioxide must be fabricated, tested,
and marked in accordance with §§ 147.60
and 147.65 of this chapter.

source of power other than the carbon
dioxide.
§ 34.15–35 Enclosure openings—T/ALL.
(a) Except for cargo spaces, the operation of the carbon dioxide system
shall automatically shut down any mechanical ventilation to that space. This
will not be required where the carbon
dioxide system is a secondary system
in addition to another approved primary system protecting the space.
(b) Where natural ventilation is provided for spaces protected by a carbon
dioxide extinguishing system, provisions shall be made for easily and effectively closing off the ventilation.
(c) Means shall be provided for closing all other openings to the space protected from outside such space. In this
respect, relatively tight doors, shutters, or dampers shall be provided for
openings in the lower portion of the
space. The construction shall be such
that openings in the upper portion of
the space can be closed off either by
permanently installed means or by the
use of canvas or other material which
is normally carried by the vessel.

§ 34.15–25 Discharge outlets—T/ALL.
(a) Discharge outlets shall be of an
approved type.

§ 34.15–40 Pressure relief—T/ALL.
(a) Where necessary, relatively tight
compartments such as refrigeration
spaces, paint lockers, etc., shall be provided with suitable means for relieving
excessive pressure accumulating within the compartment when the carbon
dioxide is injected.

§ 34.15–30 Alarms—T/ALL.
(a) Spaces required to have a delayed
discharge by § 34.15–10(f) which are protected by a carbon dioxide extinguishing system and are normally accessible to persons on board while the
vessel is being navigated, other than
paint and lamp lockers and similar
small spaces, shall be fitted with an approved audible alarm in such spaces
which will be automatically sounded
before the carbon dioxide is admitted
to the space. The alarm shall be conspicuously and centrally located and
shall be marked as required by § 35.40–
7 of this subchapter. Such alarms shall
be so arranged as to sound during the
20-second delay period prior to the discharge of carbon dioxide into the space,
and the alarm shall depend on no

§ 34.15–50 Lockout valves—T/ALL.
(a) A lockout valve must be provided
on any carbon dioxide extinguishing
system protecting a space over 6,000
cubic feet in volume and installed or
altered after July 9, 2013. ‘‘Altered’’
means modified or refurbished beyond
the maintenance required by the manufacturer’s design, installation, operation and maintenance manual.
(b) The lockout valve must be a
manually operated valve located in the
discharge manifold prior to the stop
valve or selector valves. When in the
closed position, the lockout valve must
provide complete isolation of the system from the protected space or spaces,
making it impossible for carbon dioxide to discharge in the event of equipment failure during maintenance.

[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended at 53 FR 7748, Mar. 10, 1988; USCG1999–6216, 64 FR 53223, Oct. 1, 1999]

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§ 34.15–60

46 CFR Ch. I (10–1–14 Edition)

(c) The lockout valve design or locking mechanism must make it obvious
whether the valve is open or closed.
(d) A valve is considered a lockout
valve if it has a hasp or other means of
attachment to which, or through
which, a lock can be affixed, or it has
a locking mechanism built into it.
(e) The master or person-in-charge
must ensure that the valve is locked
open at all times, except while maintenance is being performed on the extinguishing system, when the valve must
be locked in the closed position.
(f) Lockout valves added to existing
systems must be approved by the Commandant as part of the installed system.
[USCG–2006–24797, 77 FR 33873, June 7, 2012]

§ 34.15–60 Odorizing units—T/ALL.
Each carbon dioxide extinguishing
system installed or altered after July
9, 2013, must have an approved odorizing unit to produce the scent of wintergreen, the detection of which will
serve as an indication that carbon dioxide gas is present in a protected area
and any other area into which the carbon dioxide may migrate. ‘‘Altered’’
means modified or refurbished beyond
the maintenance required by the manufacturer’s design, installation, operation and maintenance manual.
[USCG–2006–24797, 77 FR 33873, June 7, 2012]

§ 34.15–90 Installations contracted for
prior to January 1, 1962—T/ALL.
(a) Installations contracted for prior
to November 19, 1952, shall meet the requirements of this paragraph.
(1) Existing arrangements, materials,
and facilities previously approved shall
be considered satisfactory so long as
they meet the minimum requirements
of this paragraph and they are maintained in good condition to the satisfaction of the Officer in Charge, Marine
Inspection. Minor repairs and alterations may be made to the same standards as the original installation.
(2) The details of the systems shall be
in general agreement with §§ 34.15–5
through 34.15–40 insofar as is reasonable and practicable, with the exception of § 34.15–5(d)(1) through (3) covering spaces other than cargo spaces,
which systems may be installed in ac-

cordance with paragraphs (a) (4)
through (7) of this section.
(3) For cargo tanks at least one
pound of carbon dioxide shall be available for each 30 cubic feet of the largest
cargo tank. The discharge of the required amount of carbon dioxide shall
be complete within 5 minutes.
(4) In boiler rooms, the bilges shall be
protected by a system discharging
principally below the floor plates. Perforated pipe may be used in lieu of discharge nozzles for such systems. The
number of pounds of carbon dioxide
shall be equal to the gross volume of
the boiler room taken to the top of the
boilers divided by 36. In the event of an
elevated boiler room which drains to
the machinery space, the system shall
be installed in the engineroom bilge
and the gross volume shall be taken to
the flat on which the boilers are installed.
(5) In machinery spaces where main
propulsion internal combustion machinery is installed, the number of
pounds of carbon dioxide required shall
be equal to the gross volume of the
space taken to the underside of the
deck forming the hatch opening divided by 22.
(6) In miscellaneous spaces other
than cargo or main machinery spaces
the number of pounds of carbon dioxide
required shall be equal to the gross volume of the space divided by 22.
(7) Branch lines to the various spaces
other than cargo and similar spaces
shall be as noted in table 34.15–90(a)(7).
This table is based on cylinders having
discharge outlets and siphon tubes of
3⁄8-inch diameter.
TABLE 34.15–90(a)(7)
Number of cylinders
Nominal pipe size, inches
Over
2
4
6
12
16
27
39
60
80
104

Not over
2
4
6
12
16
27
39
60
80
104
165

⁄ -standard.
⁄ -standard.
1-extra heavy.
11⁄4-extra heavy.
11⁄2-extra heavy.
2-extra heavy.
21⁄2-extra heavy.
3-extra heavy.
31⁄2-extra heavy.
4-extra heavy.
5-extra heavy.
12
34

(b) Installations contracted for on or
after November 19, 1952, but prior to

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Coast Guard, DHS

§ 34.17–10

January 1, 1962, shall meet the requirements of this paragraph.
(1) Existing arrangements, materials,
and facilities previously approved shall
be considered satisfactory so long as
they meet the minimum requirements
of this paragraph and they are maintained in good condition to the satisfaction of the Officer in Charge, Marine
Inspection. Minor repairs and alterations may be made to the same standards as the original installation.
(2) The details of the systems shall be
in general agreement with §§ 34.15–5
through 34.15–40 insofar as is reasonable and practicable with the exception
that delayed discharges need not be
provided for installations made prior to
July 1, 1957.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGFR 66–33, 31 FR 15268, Dec. 6,
1966; USCG-1999–6216, 64 FR 53223, Oct. 1, 1999]

Subpart 34.17—Fixed Foam
Extinguishing Systems, Details
§ 34.17–1

Application—T/ALL.

(a) Where a fixed foam extinguishing
system is installed, the provisions of
this subpart with the exception of
§ 34.17–90, shall apply to all installations contracted for on or after January 1, 1962.
(b) Installations contracted for prior
to January 1, 1962, shall meet the requirements of § 34.17–90.
§ 34.17–5 Quantity of foam required—
T/ALL.
(a) Area protected. (1) For machinery
spaces and pumprooms, the system
shall be so designed and arranged as to
spread a blanket of foam over the entire tank top or bilge of the space protected. The arrangement of piping shall
be such as to give a relatively uniform
distribution over the entire area protected.
(2) Where an installation is made to
protect an oil-fired boiler installation
on a flat which is open to or can drain
to the lower engineroom or other
space, both the flat and the lower space
shall be protected simultaneously. The
flat shall be fitted with suitable
coamings on all openings other than
deck drains to properly restrain the oil
and foam at that level. Other installa-

tions of a similar nature will be considered in a like manner.
(b) Rate of application. (1) The rate of
discharge to foam outlets protecting
the hazard shall be at least as set forth
in this paragraph.
(2) For chemical foam systems with
stored ‘‘A’’ and ‘‘B’’ solutions, a total
of at least 1.6 gallons per minute of the
two solutions shall be discharged for
each 10 square feet of area protected.
(3) For other types of foam systems,
the water rate to the dry-powder generators or air foam production equipment shall be at least 1.6 gallons per
minute for each 10 square feet of area
protected.
(c) Supply of foam-producing material.
(1) There shall be provided a quantity
of foam-producing material sufficient
to operate the equipment at the minimum discharge rate specified in paragraph (b) of this section for a period of
at least 3 minutes.
(d) Separate supply of foam-producing
material. (1) A separate supply of foamproducing material need not be provided for each space protected. This includes a deck foam system. The total
available supply shall be at least sufficient for the space requiring the greatest amount.
(e) Water supply for required pumps. (1)
The water supply shall be from outside
and completely independent of the
space protected.
§ 34.17–10 Controls—T/ALL.
(a) The foam agent, its container,
measuring devices, and other items peculiar to the system shall be of an approved type.
(b) The foam-producing material container and all controls and valves for
the operation of the system shall be
outside the space protected and shall
not be located in such space as might
be cut off or made inaccessible in the
event of fire in any of the spaces protected. The control space shall be as
convenient as practicable to one of the
main escapes from the spaces protected, and shall be marked as required
by § 35.40–10 of this subchapter. Where
pumps are required, it shall not be necessary that they be started from the
control space.
(c) Complete, but simple instructions
for the operation of the system shall be

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§ 34.17–15

46 CFR Ch. I (10–1–14 Edition)

located in a conspicuous place at or
near the controls.
(d) The valves to the various spaces
served shall be marked as required by
§ 35.40–10 of this subchapter.
§ 34.17–15 Piping—T/ALL.
(a) All piping, valves, and fittings
shall meet the applicable requirements
of subchapter F (Marine Engineering)
of this chapter.
(b) All piping, valves, and fittings of
ferrous materials shall be protected inside and outside against corrosion unless specifically approved otherwise by
the Commandant.
(c) All piping, valves, and fittings
shall be securely supported, and where
necessary, protected against injury.
(d) Drains and dirt traps shall be
fitted where necessary to prevent the
accumulation of dirt or moisture.
(e) Piping shall not be used for any
other purpose than firefighting, drills
and testing.
§ 34.17–20 Discharge outlets—T/ALL.
(a) Discharge outlets shall be of an
approved type.
§ 34.17–25 Additional protection required—T/ALL.
(a) In order that any residual fires
above the floor plates may be extinguished when a foam system is installed for the protection of machinery
spaces, at least 2 fire hydrants, in addition to those required for the machinery space by subpart 34.10, shall be installed outside of the machinery space
entrance. Such hydrants shall be fitted
with sufficient hose so that any part of
the machinery space may be reached
with at least 2 streams of water, and
each hose shall be equipped with an approved combination nozzle and applicator.
§ 34.17–90 Installations contracted for
prior to January 1, 1962—T/ALL.
(a) Installations contracted for prior
to January 1, 1962, shall meet the following requirements:
(1) Existing arrangements, materials,
and facilities previously approved shall
be considered satisfactory so long as
they meet the minimum requirements
of this paragraph and they are maintained in good condition to the satis-

faction of the Officer in Charge, Marine
Inspection. Minor repairs and alterations may be made to the same standards as the original installation.
(2) The details of the systems shall be
in general agreement with §§ 34.17–5
through 34.17–20, insofar as is reasonable and practicable. Installations contracted for prior to November 19, 1952,
need not comply with paragraph (a)(2)
of § 34.17–5 and § 34.17–25. A 6-inch blanket of foam in 3 minutes for machinery
spaces and pumprooms will be considered as meeting the requirements of
§ 34.17–5.
(3) Where a system is installed to
protect a tank, it shall be so designed
and arranged as to spread a blanket of
foam over the entire liquid surface of
the tank within the range of usual
trim. The arrangement of piping shall
be such as to give a relatively uniform
distribution over the entire area protected.
(4) For tanks, the rate of discharge to
foam outlets protecting the hazard
shall be as set forth in § 34.17–5(b), except that the value of 1 gallon per
minute shall be substituted in both
cases for the value of 1.6 gallons per
minute. The quantity of foam provided
shall be sufficient to operate the equipment for 5 minutes.
(5) On installations installed prior to
November 19, 1952, a semiportable foam
generator using a dry-chemical mixture or mechanical foam in conjunction with the fire lines may be substituted for the fixed system subject to
the following conditions:
(i) There shall be at least one fire
pump of suitable capacity available
which can be operated and controlled
from outside the space protected.
(ii) Stop valves shall be installed in
the line so that if any portion of the
fire main is ruptured, the foam generator may still be operated. Connections
for at least two fire hoses shall be provided between the pump and the stop
valve.
(iii) If the foam system is of the portable or semiportable type, the apparatus and chemicals shall be stored in
a readily accessible place protected
from the weather.

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Coast Guard, DHS

§ 34.20–10

Subpart 34.20—Deck Foam
System, Details
§ 34.20–1

Application—T/ALL.

(a) Where a deck foam system is installed, the provisions of this subpart,
except § 34.20–90, apply to all installations that are contracted for on or
after January 1, 1970, unless otherwise
indicated.
(b) Installations contracted for prior
to January 1, 1970, shall meet the requirements of § 34.20–90.
(c) Foreign flag crude oil tankers and
product carriers required to have fixed
deck foam systems by this subpart
must have systems that are designed
and installed in accordance with Regulation 61 of Chapter II–2 of SOLAS 1974.
(Senate Document, 57–1180, GPO, Washington, 1976; ‘‘Message from the President of the United States transmitting,
the International Convention for the
Safety of Life at Sea, 1974, Done at
LONDON, November 1, 1974’’).
(46 U.S.C. 391a; 49 CFR 1.46(n)(4))
[CGFR 69–72, 34 FR 17481, Oct. 29, 1969, as
amended by CGD 74–127, 41 FR 3846, Jan. 26,
1976; CGD 77–057a, 44 FR 66502, Nov. 19, 1979]

§ 34.20–3 Cargo
ALL.

area

definition—T/

(a) For the purpose of this subpart,
the term cargo area is defined as the
maximum beam of the vessel times the
total longitudinal extent of the cargo
tank spaces.
§ 34.20–5 Quantity of foam required—
T/ALL.
(a) Area protected. Systems of this
type are designed to give primary protection to the spaces over the cargo
tanks.
(b) Rate of application. The water rate
of the foam production equipment shall
be determined as follows:
(1) For usual petroleum products the
rate of supply of foam solution shall be
not less than the greatest of the following:
(i) 0.6 liters/min per square meter of
cargo tanks deck area, where cargo
tanks deck area means the maximum
breadth of the ship multiplied by the
total longitudinal extent of the cargo
tank spaces;

(ii) 6 liters/min per square meter of
the horizontal sectional area of the single tank having the largest such area;
or
(iii) 3 liters/min per square meter of
the area protected by the largest monitor, such area being entirely forward
of the monitor, but not less than 1,250
liters/min.
(2) For polar solvent products (e.g. alcohols, ketones, etc.) the water rate
shall be determined for each vessel.
The rate will depend upon the vessel
design, products to be carried and foam
system to be used.
(c) Supply of foam-producing material.
Each deck foam system must have a
supply of foam-producing material sufficient to operate the system at its designed rate of foam production for the
following periods:
(1) For installations contracted for
on or after January 1, 1970, 15 minutes
without recharging, except as required
in paragraph (c)(2) of this section.
(2) For installations on ships that
have a keel laying date on or after January 1, 1975, 20 minutes without recharging.
(d) Separate supply of foam-producing
material. Where the same foam-producing material may be used for this
system as well as a fixed foam system,
separate supplies need not be provided
for each space protected. The total
available supply shall be at least sufficient for the space requiring the greatest amount.
(e) Water supply. Suitable pumps
shall be provided capable of producing
the required water rate. The fire pumps
required by subpart 34.10 may be used
for this purpose; however, the operation of the deck foam system shall
not interfere with the simultaneous
use of the fire main system.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGFR 69–72, 34 FR 17481, Oct. 29,
1969; CGD 74–127, 41 FR 3846, Jan. 26, 1976;
CGD 95–028, 62 FR 51199, Sept. 30, 1997]

§ 34.20–10 Controls—T/ALL.
(a) The foam agent, its container,
measuring devices, and other items peculiar to this system shall be of an approved type.
(b) The foam agent container and the
main controls for operating the system
shall be located in a protected space

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§ 34.20–15

46 CFR Ch. I (10–1–14 Edition)

not likely to be made inaccessible in
the event of a fire in any portion of the
cargo area.
(c) Complete, but simple instructions
for the operation of the system shall be
located in a conspicuous place at or
near the controls.
(d) All valves shall be marked as required by § 35.40–17.
(e) The deck foam system on each
tankship that has a keel laying date on
or after January 1, 1975, must be capable of being actuated, including introduction of foam to the foam main,
within three minutes of notification of
a fire.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 74–127, 41 FR 3846, Jan. 26,
1976]

§ 34.20–15

Piping—T/ALL.

(a) All piping, valves, and fittings
shall meet the applicable requirements
of subchapter F (Marine Engineering)
of this chapter.
(b) All piping, valves, and fittings of
ferrous materials shall be protected inside and outside against corrosion unless specifically approved otherwise by
the Commandant.
(c) The piping and outlet arrangement shall allow the required rate of
applications as contained in § 34.20–5(b),
to any portion of the open deck of the
cargo area through the use of the
mounted and hand-held appliances that
are provided. At least 50 percent of the
required rate of application shall be
from the mounted appliances. One or
more hose outlets for hand-held appliances shall be provided at each foam
station. For enclosed spaces, application of at least 1.6 gallons per minute
water rate for each 10 square feet of the
enclosed area for 5 minutes is acceptable. For the purpose of this paragraph,
all piping is assumed to be damaged in
way of the fire and an adequate number
of valves shall be fitted to prevent loss
of foam by closing valves to damaged
piping.
(d) All piping, valves, and fittings
shall be securely supported, and where
necessary, protected against injury.
(e) Drains and dirt traps shall be
fitted where necessary to prevent the
accumulation of dirt or moisture.

(f) Piping shall not be used for any
other purpose than firefighting, drills,
and testing.
(g) Tankships of 100,000 or more DWT
(metric) and combination carriers of
50,000 or more DWT (metric) that have
a keel laying date on or after January
1, 1975, must have at least one foam
station port and at least one foam station starboard that are separated from
each other by a distance equal to at
least one-half the beam of the vessel:
(1) At the housefront or aft of the
cargo area in a location that is accessible to the crew for fighting a cargo
and a pumproom fire; and
(2) If the tankship has a forward accommodations house, at the after
boundary of that house.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 72–138, 39 FR 7790, Feb. 28,
1974; CGD 74–127, 41 FR 3846, Jan. 26, 1976]

§ 34.20–20 Discharge outlets—T/ALL.
(a) Discharge outlets shall be of an
approved type.
(b) At least one mounted foam appliance shall be provided for each station
that is required in § 34.20–15(c).
(c) The number of hand-held appliances provided shall be at least equal
to the number of hose outlets at the
two foam stations having the most
hose outlets. Hand-held appliances
shall be stowed in a well marked, readily accessible position that cannot be
isolated by a fire involving the cargo
tanks.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGD 72–138, 39 FR 7790, Feb. 28,
1974]

§ 34.20–25 Foam monitor capacity—T/
ALL.
The capacity of each foam monitor
on ships that have a keel laying date
on or after January 1, 1975, must be at
least 3 liters per minute per square
meter (.073 gallons per minute per
square foot) of cargo area protected by
that monitor.
[CGD 74–127, 41 FR 3846, Jan. 26, 1976]

§ 34.20–90 Installations contracted for
prior to January 1, 1970—T/ALL.
(a) Installations contracted for prior
to January 1, 1970, shall meet the following requirements:

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Coast Guard, DHS

§ 34.25–15

(1) Existing arrangements, materials,
and facilities previously approved shall
be considered satisfactory so long as
they meet the minimum requirements
of this paragraph and they are maintained in good condition to the satisfaction of the Officer in Charge, Marine
Inspection. Minor repairs and alterations may be made to the same standards as the original installation.
(2) For installations contracted for
prior to November 19, 1952, see § 34.17–
90(a)(5).
(3) Installations contracted for on or
after November 4, 1957, but prior to
January 1, 1970, shall meet the requirements of §§ 34.20–5 through 34.20–20 insofar as is reasonable and practicable.
[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as
amended by CGFR 69–72, 34 FR 17481, Oct. 29,
1969]

Subpart 34.25—Water Spray
Extinguishing Systems, Details
§ 34.25–1

Application—T/ALL.

(a) Where a water spray extinguishing system is installed, the provisions of this subpart, with the exception of § 34.25–90, shall apply to all installations contracted for on or after
January 1, 1964. Installations contracted for prior to January 1, 1964,
shall meet the requirements of § 34.50–
90.
§ 34.25–5 Capacity and arrangement—
T/ALL.
(a) The capacity and arrangement
shall be such as to effectively blanket
the entire area of the space protected.
The rate of discharge and the arrangement of piping and spray nozzles shall
be such as to give a uniform distribution over the entire area protected.
(b) The spacing of the spray nozzles
shall be on the basis of the spray pattern provided by the lowest pressure at
any spray nozzle in the system. In no
instance shall a system be designed for
any spray nozzle to be operated at a
pressure less than that for which it was
approved. The maximum permissible
height of the spray nozzle above the
protected area shall not exceed that
specified in its approval. Whenever
there are obstructions to coverage by
the spray patterns, additional spray

nozzles shall be installed to provide
full coverage.
(c) The water supply shall be from
outside the space protected and shall in
no way be dependent upon power from
the space protected. The pump supplying water for the system shall either be reserved exclusively for the
system or it may be one of the fire
pumps, provided the capacity of the
fire pump as set forth in subpart 34.10
is increased by the required capacity of
the system, so that this system may be
operated simultaneously with the fire
main system.
§ 34.25–10 Controls—T/ALL.
(a) There shall be one control valve
for the operation of the system located
in an accessible position outside the
space protected. The control shall be
located as convenient as practicable to
one of the main escapes from the space
protected, and shall be marked as required by § 35.40–18 of this subchapter.
It shall not be necessary to start the
pumps from the control space.
(b) Complete, but simple instructions
for the operation of the system shall be
located in a conspicuous place at or
near the controls.
(c) The valve to the space protected
shall be marked as required by § 35.40–
18 of this subchapter.
§ 34.25–15 Piping—T/ALL.
(a) All piping, valves and fittings
shall meet the applicable requirements
of subchapter F (Marine Engineering)
of this chapter.
(b) Distribution piping shall be of
materials resistant to corrosion, except
that steel or iron pipe may be used if
inside corrosion resistant coatings
which will not flake off and clog the
nozzles are applied. Materials readily
rendered ineffective by heat of a fire
shall not be used. The piping shall be
subject to approval for each installation.
(c) All piping, valves, and fittings
shall be securely supported, and where
necessary, protected against injury.
(d) Drains, strainers, and dirt traps
shall be fitted where necessary to prevent the accumulation of dirt or moisture.
(e) Threaded joints shall be metal to
metal, with no thread compound used.

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§ 34.25–20

46 CFR Ch. I (10–1–14 Edition)

(f) Distribution piping shall be used
for no other purpose.
(g) All piping shall be thoroughly
cleaned and flushed before installation
of the water spray nozzles.
§ 34.25–20 Spray nozzles—T/ALL.
(a) Spray nozzles shall be of an approved type.
§ 34.25–90 Installations contracted for
prior to January 1, 1964—T/ALL.
(a) Installations contracted for prior
to January 1, 1964, shall meet the following requirements:
(1) Existing arrangements, materials,
and facilities previously approved shall
be considered satisfactory so long as
they meet the minimum requirements
of this paragraph and they are maintained in good condition to the satisfaction of the Officer in Charge, Marine
Inspection. Minor repairs and alterations may be made to the same standards as the original installation.
(2) The details of the systems shall be
in general agreement with §§ 34.25–5
through 34.25–20 insofar as is reasonable and practicable.

Subpart 34.30—Automatic
Sprinkler Systems, Details
§ 34.30–1 Application—TB/ALL.
Automatic sprinkler systems shall
comply with NFPA 13–1996.

(b) The types of fire will be designated as follows:
(1) ‘‘A’’ for fires in ordinary combustible materials such as mattresses,
piles of wood, shavings, canvas, etc.,
where the quenching and cooling effects of quantities of water, or solutions containing large percentages of
water, are of first importance.
(2) ‘‘B’’ for fires in combustible or
flammable liquids such as gasoline, lubricating oil, diesel oil, greases, etc.,
where a blanketing or smothering effect is essential.
(3) ‘‘C’’ for fires in electrical equipment where the use of non-conducting
extinguishing agent is of first importance so that electrical shock is not experienced by the firefighter.
(c) The number designations for size
will start with ‘‘I’’ for the smallest to
‘‘V’’ for the largest. Extinguishers
which have a gross weight of 55 pounds
or less when fully charged are considered portable. Extinguishers which
have a gross weight of more than 55
pounds when fully charged are considered semiportable and shall be fitted
with suitable hose and nozzle or other
practicable means so that all portions
of the space concerned may be reached.
Examples of size graduations for some
of
the
typical
portable
and
semiportable extinguishers are set
forth in table 34.50–5(c).
TABLE 34.50–5(c)

[CGD 95–028, 62 FR 51199, Sept. 30, 1997]

Subpart 34.50—Portable and
Semiportable Extinguishers
§ 34.50–1 Application—TB/ALL.
(a) The provisions of this subpart,
with the exception of § 34.50–90, shall
apply to all vessels contracted for on or
after January 1, 1962.
(b) All vessels contracted for prior to
January 1, 1962, shall meet the requirements of § 34.50–90.
§ 34.50–5 Classification—TB/ALL.
(a) Portable and semiportable extinguishers shall be classified by a combination letter and number symbol.
The letter indicating the type of fire
which the unit could be expected to extinguish, and the number indicating
the relative size of the unit.

Classification
type
(Size)

Soda-acid
and water
(Gallons)

Foam
(Gallons)

Carbon
dioxide
(Pounds)

Dry
chemical
(Pounds)

A-II ..............
B-I ...............
B-II ..............
B-III .............
B-IV ............
B-V .............
C-I ...............
CC-II ...........

21⁄2
..................
..................
..................
..................
..................
..................
..................

21⁄2
11⁄4
21⁄2
12
20
40
................
................

..............
4
15
35
50
1 100
4
15

..............
2
10
20
30
1 50
2
10

1 For

outside use, double the amount shall be carried.

§ 34.50–10 Location—TB/ALL.
(a)
Approved
portable
and
semiportable extinguishers shall be installed in accordance with table 34.50–
10(a). The location of the equipment
shall be such as in the opinion of the
Officer in Charge, Marine Inspection,
will be most convenient in case of
emergency.
Where
special
circumstances exist, not covered by table

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Coast Guard, DHS

§ 34.50–10

34.50–10(a), the Officer in Charge, Marine Inspection, may require such additional equipment as he deems necessary for the proper protection of the
vessel.
(b) For additional portable extinguishers as a substitute for sand, see
§ 34.55–10.
(c) Semiportable extinguishers shall
be located in the open so as to be readily seen.
(d) If portable extinguishers are not
located in the open or behind glass so

that they may be readily seen they
may be placed in enclosures together
with the fire hose, provided such enclosures are marked as required by § 35.40–
25 of this subchapter.
(e) Portable extinguishers and their
stations shall be numbered in accordance with § 35.40–25 of this subchapter.
(f) Hand portable or semiportable extinguishers which are required on their
nameplates to be protected from freezing shall not be located where freezing
temperatures may be expected.

TABLE 34.50–10(a)—PORTABLE AND SEMIPORTABLE EXTINGUISHERS
Tank ships

Tank barges
Area

Classification
(see § 34.50–5)

Quantity and location

Classification (see
§ 34.50–5)

Quantity and location

...............................
...............................

None required.
None required.

A-II or B-II .............

1 required in vicinity of exit

Safety Areas
1 required ...........................
1 required in vicinity of exit

C-II ....................
C-II1 ...................

Wheelhouse and chartroom area. ...
Radio room ......................................
Accommodation Areas

1 required in each main
passageway on each
deck, conveniently located, and so that no
room is more than 75
feet from an extinguisher.

A-II or B-II .........

Staterooms, toilet spaces, public
spaces, offices, etc., and associated lockers, storerooms, and
pantries..

1 required for each 2,500
square feet or fraction
thereof, suitable for hazard involved.
1 required for each 2,500
square feet or fraction
thereof, suitable for hazard involved.

B-II or C-II .........

Galleys .............................................

B-II or C-II ............

1 required, suitable
for hazard involved.

A-II or B-II .........

Stores areas, including paint and
lamp rooms.

...............................

None required.

Spaces containing oil fired boilers,
either main or auxiliary, or any
fuel oil units subject to the discharge pressure of the fuel oil
service pump.

B-II ........................

1 required.12

Spaces containing internal combustion or gas turbine propulsion machinery.

...............................

None required.

Auxiliary spaces containing internal
combustion or gas turbine units.
Auxiliary spaces containing emergency generators.

B-II ........................

1 required in vicinity of exit. 7 9 12
None required.

Service Areas

Machinery Area 2
2 required 3 .........................

1 required ...........................
1 required for each 1,000
B.H.P., but not less than
2 nor more than 6 5.
1 required 6 7 .......................
1 required in vicinity of
exit 7.
1 required in vicinity of
exit 8.

B-II ....................

and
B-V4.
B-II ....................

and
B-III.
B-II ....................
C-II ....................

...............................

Cargo Areas
1 required in lower pumproom.
None required .....................
1 Vessels

B.II .....................

Pumprooms .....................................

B-II ........................

...........................

Cargo tank area ..............................

B-II ........................
B-V .......................

not on an international voyage may substitute 2 C-I.

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1 required in vicinity of exit. 9 12
2 required. 10 12
1 required. 9 11

§ 34.50–15

46 CFR Ch. I (10–1–14 Edition)

2 A C-II shall be immediately available to the service generator and main switchboard areas, and further, a C-II shall be conveniently located not more than 50 feet walking distance from any point in all main machinery operating spaces. These extinguishers need not be in addition to other required extinguishers.
3 Vessels of less than 1,000 gross tons require 1.
4 Vessels of less than 1,000 gross tons may substitute 1 B-IV.
5 Only 1 required for vessels under 65 feet in length.
6 If oil burning donkey boiler fitted in space, the B-V previously required for the protection of the boiler may be substituted. Not
required where a fixed carbon dioxide system is installed.
7 Not required on vessels of less than 300 gross tons if fuel has a flashpoint higher than 110 °F.
8 Not required on vessels of less than 300 gross tons.
9 Not required if fixed system installed.
10 If no cargo pump on barge, only one B-II required.
11 Manned barges of 100 gross tons and over only.
12 Not required on unmanned barges except during transfer of cargo, or operation of barge machinery, or boilers. (See
§ 35.35–1(c) of this chapter.)

[CGFR 65–50, 30 FR 16694, Dec. 30, 1965, as amended by CGFR 70–143, 35 FR 19905, Dec. 30, 1970]

§ 34.50–15

Spare charges—TB/ALL.

(a) Spare charges shall be carried on
all vessels for at least 50 percent of
each size and each variety, i.e. foam,
soda-acid, carbon dioxide, etc., of portable extinguisher required by § 34.50–
10(a). However, if the unit is of such variety that it cannot be readily recharged by the vessel’s personnel, one
spare unit of the same classification
shall be carried in lieu of spare charges
for all such units of the same size and
variety. This section does not apply to
unmanned barges.
(b) Spare charges shall be so packaged as to minimize the hazards to personnel while recharging the units.
§ 34.50–20 Semiportable
guishers—TB/ALL

fire

extin-

(a) The frame or support of each size
III, IV, and V fire extinguisher required
by table 34.50–10(a) must be welded or
otherwise permanently attached to a
bulkhead or deck.
(b) If a size III, IV, or V fire extinguisher has wheels and is not required
by table 34.50–10(a), it must be securely
stowed when not in use to prevent it
from rolling out of control under heavy
sea conditions.

with the degree of safety prescribed by
table 34.50–10(a). In such cases, minor
modifications may be made to the
same standard as the original installation: Provided, That in no case will a
greater departure from the standards
of table 34.50–10(a) be permitted than
presently exists.
(2) [Reserved]
(b) [Reserved]

Subpart 34.60—Fire Axes
§ 34.60–1 Application—T/ALL.
(a) The provisions of this subpart
shall apply to all tankships.
(b) [Reserved]
§ 34.60–5 Number required—T/ALL.
(a) All tankships shall carry at least
the minimum number of fire axes as
set forth in table 34.60–5(a). Nothing in
this paragraph shall be construed as
limiting the Officer in Charge, Marine
Inspection, from requiring such additional fire axes as he deems necessary
for the proper protection of the tankship.
TABLE 34.60–5(a)
Gross tons
Number of axes
Over

[CGD 77–039, 44 FR 34132, June 14, 1979]

§ 34.50–90 Vessels contracted for prior
to January 1, 1962—TB/ALL.
(a) Vessels contracted for prior to
January 1, 1962, shall meet the following requirements:
(1) The provisions of §§ 34.50–5
through 34.50–15 shall be met with the
exception that existing installations
may be maintained if in the opinion of
the Officer in Charge, Marine Inspection, they are in general agreement

Not over
50
200
500
1,000

50
200
500
1,000
..............................

(b) [Reserved]
§ 34.60–10 Location—T/ALL.
(a) Fire axes shall be distributed
throughout the spaces so as to be most
readily available in the event of emergency.

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Coast Guard, DHS

Pt. 35

(b) If fire axes are not located in the
open, or behind glass, so that they may
readily be seen, they may be placed in
enclosures together with the fire hose,
provided such enclosures are marked as
required by § 35.40–15 of this subchapter.

PART 35—OPERATIONS
Subpart 35.01—General Provisions; Special
Operating Requirements
Sec.
35.01–1 Inspection and testing required when
making alterations, repairs, or other
such operations involving riveting, welding, burning, or like fire-producing actions—TB/ALL.
35.01–2 Preemptive effect.
35.01–3 Incorporation by reference.
35.01–5 Sanitary condition and crew quarters—T/ALL.
35.01–10 Shipping papers—TB/ALL.
35.01–15 Carriage of persons other than
crew—TB/ALL.
35.01–25 Sacrificial anode installations—TB/
ALL.
35.01–35 Repairs and alterations to firefighting equipment—TB/ALL.
35.01–45 Open hopper type barges—B/ALL.
35.01–50 Special operating requirements for
tank barges carrying certain dangerous
bulk cargoes—B/ALL.
35.01–55 Pilot boarding operation.
35.01–60 Person excluded.

Subpart 35.03—Work Vests
35.03–1 Application—TB/ALL.
35.03–5 Approved types of work vests—TB/
ALL.
35.03–10 Use—TB/ALL.
35.03–15 Shipboard stowage—TB/ALL.
35.03–20 Shipboard inspections—TB/ALL.
35.03–25 Additional requirements for hybrid
work vests.

Subpart 35.05—Officers and Crews
35.05–1 Officers and crews of tankships—T/
ALL.
35.05–5 [Reserved]
35.05–10 [Reserved]
35.05–15 Tank vessel security—TB/ALL.
35.05–20 Physical condition of crew—TB/
ALL.
35.05–25 Illness, alcohol, drugs—TB/ALL.

Subpart 35.07—Logbook Entries
35.07–1 Application—TB/ALL.
35.07–5 Logbooks and records—TB/ALL.
35.07–10 Actions required to be logged—TB/
ALL.

Subpart 35.08—Stability Information
35.08–1

Posting of stability letter.

Subpart 35.10—Fire and Emergency
Requirements
35.10–1 Emergency training, musters, and
drills—T/ALL.
35.10–3 Display of plans—TB/ALL.
35.10–5 Muster lists, emergency signals, and
manning—T/ALL.
35.10–15 Emergency lighting and power systems—T/ALL.

Subpart 35.15—Notice and Reporting of
Casualty and Voyage Records
35.15–1 Notice and reporting of casualty and
voyage records—TB/ALL.

Subpart 35.20—Navigation
35.20–1 Notice to mariners; aids to navigation—T/OCLB.
35.20–5 Draft of tankships—T/OC.
35.20–7 Verification of vessel compliance
with applicable stability requirements—
TB/ALL.
35.20–10 Steering gear test—T/ALL.
35.20–20 Master’s and officer’s responsibility—TB/ALL.
35.20–30 Flashing the rays of a searchlight
or other blinding light—T/ALL.
35.20–35 Whistling—T/ALL.
35.20–40 Maneuvering characteristics—T/OC.
35.20–45 Use of Auto Pilot—T/ALL.

Subpart 35.25—Engine Department
35.25–1 Examination of boilers and machinery by engineer—T/ALL.
35.25–5 Repairs of boilers and unfired pressure vessels and reports of repairs or accidents by chief engineer—TB/ALL.
35.25–10 Requirements for fuel oil—T/ALL.
35.25–15 Carrying of excess steam—TB/ALL.

Subpart 35.30—General Safety Rules
35.30–1 Warning signals and signs—TB/ALL.
35.30–5 Fires, matches, and smoking—TB/
ALL.
35.30–10 Cargo tank hatches, ullage holes,
and Butterworth plates—TB/ALL.
35.30–15 Combustible
gas
indicator—TB/
ALL.
35.30–20 Emergency equipment—TB/ALL.
35.30–25 Explosives—TB/ALL.
35.30–30 Portable electrical equipment—TB/
ALL.
35.30–35 Spark producing devices—TB/ALL.
35.30–40 Flammable liquid and gas fuels as
ship’s stores—TB/ALL.

Subpart 35.35—Cargo Handling
35.35–1

Persons on duty—TB/ALL.

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§ 35.01–1

46 CFR Ch. I (10–1–14 Edition)

35.35–4 Insulating flange joint or nonconductive hose—TB/ALL.
35.35–5 Electric bonding—TB/ALL.
35.35–10 Closing of freeing-ports, scuppers,
and sea valves—TB/ALL.
35.35–15 Connecting for cargo transfer—TB/
ALL.
35.35–20 Inspection
before
transfer
of
cargo—TB/ALL.
35.35–25 Approval to start transfer of
cargo—TB/ALL.
35.35–30 ‘‘Declaration of Inspection’’ for
tank vessels—TB/ALL.
35.35–35 Duties of person in charge of transfer—TB/ALL.
35.35–40 Conditions under which transfer operations shall not be commenced or if
started shall be discontinued—TB/ALL.
35.35–42 Restrictions on vessels alongside a
tank vessel loading or unloading cargo of
Grade A, B, or C—TB/ALL.
35.35–45 Auxiliary steam, air, or electric
current—B/ALL.
35.35–50 Termination
of
transfer
operations—TB/ALL.
35.35–55 Transfer of other cargo or stores on
tank vessels—TB/ALL.
35.35–60 Transportation of other cargo or
stores on tank barges—B/ALL.
35.35–70 Maintenance of cargo handling
equipment—TB/ALL.
35.35–75 Emergencies—TB/ALL.
35.35–85 Air compressors—TB/ALL.

Subpart 35.40—Posting and Marking
Requirements—TB/ALL
35.40–1 General alarm contact maker—TB/
ALL.
35.40–5 General alarm bells—TB/ALL.
35.40–6 Emergency lights—TB/ALL.
35.40–7 Carbon dioxide and clean agent
alarms—T/ALL.
35.40–8 Carbon dioxide warning signs—T/
ALL.
35.40–10 Steam, foam, carbon dioxide, or
clean agent fire smothering apparatus—
TB/ALL.
35.40–15 Fire hose stations—TB/ALL.
35.40–17 Foam hose/monitor stations—T/
ALL.
35.40–18 Water spray systems—TB/ALL.
35.40–20 Emergency equipment—TB/ALL.
35.40–25 Fire extinguishers—TB/ALL.
35.40–30 Instructions for changing steering
gear—TB/ALL.
35.40–35 Rudder orders—TB/ALL.
35.40–40 Marking and instructions for fire
and emergency equipment—TB/ALL.
AUTHORITY: 33 U.S.C. 1225, 1231, 1321(j); 46
U.S.C. 3306, 3703, 6101; 49 U.S.C. 5103, 5106;
E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p.
277; E.O. 12777, 56 FR 54757, 3 CFR, 1991
Comp., p. 351; Department of Homeland Security Delegation No. 0170.1.

SOURCE: CGFR 65–50, 30 FR 16704, Dec. 30,
1965, unless otherwise noted.

Subpart 35.01—General Provisions;
Special Operating Requirements
§ 35.01–1 Inspection and testing required when making alterations, repairs, or other such operations involving riveting, welding, burning,
or like fire-producing actions—TB/
ALL.
(a) The provisions of ‘‘Standard for
the Control of Gas Hazards on Vessels
to be Repaired,’’ NFPA No. 306, published by National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269, shall be used as a guide in
conducting
the
inspections
and
issuance of certificates required by this
section.
(b) Until an inspection has been made
to determine that such operation can
be undertaken with safety, no alterations, repairs, or other such operations involving riveting, welding,
burning, or like fire-producing actions
shall be made:
(1) Within or on the boundaries of
cargo tanks which have been used to
carry flammable or combustible liquid
or chemicals in bulk, or within spaces
adjacent to such cargo tanks; or,
(2) Within or on the boundaries of
fuel tanks; or,
(3) To pipe lines, heating coils,
pumps, fittings, or other appurtenances
connected to such cargo or fuel tanks.
(c) Such inspections shall be made
and evidenced as follows:
(1) In ports or places in the United
States or its territories and possessions, the inspection shall be made by
a marine chemist certificated by the
National Fire Protection Association;
however, if the services of such certified marine chemist are not reasonably available, the Officer in Charge,
Marine Inspection, upon the recommendation of the vessel owner and
his contractor or their representative,
shall select a person who, in the case of
an individual vessel, shall be authorized to make such inspection. If the inspection indicates that such operations
can be undertaken with safety, a certificate setting forth the fact in writing and qualified as may be required,
shall be issued by the certified marine

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Coast Guard, DHS

§ 35.01–10

chemist or the authorized person before the work is started. Such qualifications shall include any requirements as may be deemed necessary to
maintain, insofar as can reasonably be
done, the safe conditions in the spaces
certified, throughout the operation and
shall include such additional tests and
certifications as considered required.
Such qualifications and requirements
shall include precautions necessary to
eliminate or minimize hazards that
may be present from protective coatings or residues from cargoes.
(2) When not in such a port or place,
and a marine chemist or such person
authorized by the Officer in Charge,
Marine Inspection, is not reasonably
available, the inspection shall be made
by the senior officer present and a
proper entry shall be made in the vessel’s logbook.
(d) It shall be the responsibility of
the senior officer present to secure copies of certificates issued by the certified marine chemist or such person
authorized by the Officer in Charge,
Marine Inspection. It shall be the responsibility of the senior officer
present, insofar as the persons under
his control are concerned, to maintain
a safe condition on the vessel by full
observance of all qualifications and requirements listed by the marine chemist in the certificate.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 95–072, 60 FR 50462, Sept. 29,
1995]

§ 35.01–2

Preemptive effect.

The regulations in this part have preemptive effect over State or local regulations in the same field.
[USCG–2006–24797, 77 FR 33874, June 7, 2012]

§ 35.01–3

OES), Attn: Office of Operating and Environmental Standards, U.S. Coast
Guard Stop 7509, 2703 Martin Luther
King Jr. Avenue SE., Washington, DC
20593–7509, and is available from the address indicated in paragraph (b), or at
the National Archives and Records Administration (NARA). For information
on the availability of this material at
NARA, call 202–741–6030, or go to: http://
www.archives.gov/federallregister/
codeloflfederallregulations/
ibrllocations.html.
(b) The material approved for incorporation by reference in this part, and
the sections affected is:
American Society for Testing and Materials
100 Barr Harbor Drive, West Conshohocken,
PA 19428–2959
ASTM F 1014–92 Standard Specification for
Flashlights on Vessels.
Section affected—35.30–20(c)(3)
ASTM Adjunct F 1626, Symbols for Use in
Accordance with Regulation II–2/20 of the
1974 SOLAS Convention, PCN 12–616260–01, ©
1996–35.10–3
ASTM D 93–97, Standard Test Methods for
Flash-Point by Pensky-Martens Closed Cup
Tester–35.25–10
International Maritime Organization (IMO)
Publications Section, 4 Albert Embankment,
London, SE1 7SR United Kingdom. Resolution A.654(16), Graphical Symbols for Fire
Control Plans—35.10–3
NOTE: All other documents referenced in
this part are still in effect.
[CGD 82–042, 53 FR 17704, May 18, 1988, as
amended by CGD 96–041, 61 FR 50727, Sept. 27,
1996; CGD 97–057, 62 FR 51043, Sept. 30, 1997;
CDG 95–028, 62 FR 51199, Sept. 30, 1997; USCG1999–5151, 64 FR 67177, Dec. 1, 1999; USCG–
2009–0702, 74 FR 49227, Sept. 25, 2009; USCG–
2013–0671, 78 FR 60147, Sept. 30, 2013]

§ 35.01–5 Sanitary condition and crew
quarters—T/ALL.

Incorporation by reference.

(a) Certain materials are incorporated by reference into this part
with the approval of the Director of the
Federal Register in accordance with 5
U.S.C. 552(a). To enforce any edition
other than the one listed in paragraph
(b) of this section, notice of the change
must be published in the FEDERAL REGISTER and the material made available
to the public. All approved material is
on file at the Coast Guard Headquarters. Contact Commandant (CG–

It shall be the duty of the master and
chief engineer of every tankship to see
that such vessel and crew’s quarters
are kept in a sanitary condition.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 95–027, 61 FR 25999, May 23,
1996]

§ 35.01–10

Shipping papers—TB/ALL.

Each loaded tank vessel shall have on
board a bill of lading, manifest, or shipping document giving the name of the

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§ 35.01–15

46 CFR Ch. I (10–1–14 Edition)

consignee and the location of the delivery point, the kind, grades, and approximate quantity of each kind and grade
of cargo, and for whose account the
cargo is being handled. The tank vessel
shall not be delayed in order to secure
exact quantities of cargo. Such manifests or bills of lading may be made out
by the master, master of the towing
vessel, owner, or agent of the owner:
Provided, however, That in the case of
unmanned barges where shipping papers are not available, an entry in the
logbook of the towing vessel giving the
name of the shipper and location of
shipping point, the name of the consignee and location of delivery point,
the approximate kind, grade, and quantity of cargo in each barge of the tow,
and for whose account the cargo is
being handled, shall be considered as
complying with the requirements of
this section.
§ 35.01–15 Carriage of persons other
than crew—TB/ALL.
No person not connected with the operation of a tank ship or tank barge or
not having legitimate business with
said vessel, shall be permitted aboard
while vessel is under way unless specifically allowed by its certificate.
§ 35.01–25 Sacrificial
tions—TB/ALL.

anode

installa-

(a) The installation of magnesium
sacrificial anodes in cargo tanks utilized for the carriage of flammable or
combustible liquids in bulk is prohibited.
(b) A sacrificial anode using an aluminum alloy will be permitted in cargo
tanks under the following criteria:
(1) The maximum allowable energy
that can be developed by a falling
anode shall be 200 foot-pounds.
(2) No anode shall be installed more
than 6 feet above the bottom of the
tank. Special consideration will be
given when structural design prevents
the anodes from falling in event of failure of the attachments.
(3) Each anode shall have at least two
welded or bolted connections to the
supporting structure. Special consideration will be given to proprietary attachments which provide equally safe
installations.

(4) The plans of the anode installation and a chemical analysis of the
alloy composition shall be submitted
for approval. The anode should be magnesium free and the silicon content
limited to trace amounts.
(5) The recommended construction of
the anode should utilize a mild steel
core with necessary attachments.
Other types may be used but will require special consideration.
(c) Sacrificial anodes using materials
other than those having aluminum and/
or magnesium in whole or in part are
permitted.
[CGFR 69–72, 34 FR 17482, Oct. 29, 1969]

§ 35.01–35 Repairs and alterations to
firefighting equipment—TB/ALL.
(a) No extensive repairs or alterations, except in emergency, shall be
made to any fire-extinguishing apparatus, or other appliance subject to inspection, without advance notice to the
Officer in Charge, Marine Inspection.
Such repairs or alterations shall so far
as is practicable be made with materials and tested in the manner specified
within the regulations in this subchapter and subchapter Q (Specifications) of this chapter for new construction.
(b) Emergency repairs or alterations
shall be reported as soon as practicable
to the Officer in Charge, Marine Inspection, where the vessel may call
after such repairs are made.
§ 35.01–45 Open hopper type barges—
B/ALL.
(a) With the exception of those open
hopper type barges constructed or
modified in conformance with the requirements of subpart 32.63 of this subchapter, the special operating conditions in this section apply to all other
open hopper type barges carrying those
cargoes listed in table 30.25–1, of this
chapter, which are defined as:
(1) Flammable liquids having a Reid
vapor pressure in excess of 25 pounds
per square inch, absolute, in independent tanks (part 32 of this subchapter).
(2) Liquefied flammable gases (part 38
of this subchapter).
(b) All open hopper type barges, while
carrying in bulk any of the cargoes described in paragraph (a) of this section,

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shall be operated in conformance with
the provisions in this section. However,
the provisions in this section are not
applicable to such barges when empty
(not necessarily cleaned or gas-freed).
(c)(1) Except as otherwise provided in
this section, no such open hopper type
barge shall be placed as a lead barge in
any tow. Such barges shall be placed in
protected positions within the tow so
that the danger from diving or swamping will be minimized. Where, due to
operating conditions, compliance with
this paragraph is impossible, the provisions of paragraph (c)(3) of this section
apply. The person in charge of the towing vessels shall be responsible for
compliance with this paragraph.
(2) No such open hopper type barge
shall be moved from a loading facility
unless all void spaces and bilges are
substantially free of water. Periodic inspections and necessary pumping shall
be carried out to insure the maintenance of such water-free conditions, in
order to minimize the free surface effect in both the longitudinal and transverse directions. Except when otherwise considered necessary for inspection or pumping, all hatch covers and
other hull closure devices for void
spaces and hull compartments shall be
closed and secured at all times. In the
case of unmanned barges, the person in
charge of the towing vessel shall be
deemed to be in charge of the barge,
and all requirements to be carried out
on the barge shall be carried out by or
under the direction of such person.
(3) When an open hopper type barge is
in an exposed position, such that protection from swamping provided by adjoining barges cannot be obtained from
location within the two alone, it shall
be the responsibility of the person in
charge of the towing vessel to control
speed so as to insure protection against
diving and swamping of the barge, having due regard to its design and
freeboard, and to the operating conditions.
(d) To show that special operating requirements apply to a specific open
hopper type barge, additional placards
or signs shall be displayed in at least
four different locations on the barge
when the cargoes described in paragraph (a) of this section are carried in
any form in the cargo tanks. The plac-

ards or signs shall be posted on the
barge approximately amidships on each
side and near the centerline of each
end, facing outboard. Racks, or other
suitable means, for mounting such
placards or signs shall be so arranged
as to provide clear visibility and shall
be protected from becoming readily
damaged or obscured. The placards or
signs shall be at least equal in dimensions to the DOT standard tank car
‘‘Dangerous’’ placard (103⁄4 inches
square or larger), and shall display a
circle (10 inches in diameter or larger)
with alternating quadrants of white
and red, and so mounted that the red
quadrants are centered on the vertical
axis. The shipper and/or owner of the
barge shall be responsible for the installation of the required placards or
signs, including maintenance of them
while such barge is in temporary storage with cargo aboard. The person in
charge of the towing vessel shall be responsible for the continued maintenance of the placards or signs while
such barge is in transit.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGFR 70–10, 35 FR 3709, Feb. 25,
1970; CGD 86–033, 53 FR 36024, Sept. 16, 1988]

§ 35.01–50 Special operating requirements for tank barges carrying certain dangerous bulk cargoes—B/
ALL.
(a) The requirements of this section
shall apply to all tank barges carrying
those cargoes listed on table 30.25–1, of
this chapter, which are defined as:
(1) Flammable liquids having a Reid
vapor pressure in excess of 25 pounds
per square inch, absolute, in independent tanks (part 32 of this subchapter).
(2) Liquefied flammable gases (part 38
of this subchapter).
(b) All tank barges constructed or
modified in conformance with the requirements of subpart 32.63 of this subchapter are exempt from the provisions
of § 35.01–45.
(c) When it is necessary to operate
box or square-end barges as lead barges
of tows, the person in charge of the
towing vessel shall control the speed to
insure protection against diving and
swamping of such barges, having due
regard to their design and freeboard,
and to the operating conditions.

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§ 35.01–55

46 CFR Ch. I (10–1–14 Edition)

(d) All barges, while carrying in bulk
any of the cargoes described in paragraph (a) of this section, shall be operated in conformance with the provisions of this section. However, the provisions of this section are not applicable to such barges when empty and gasfreed.
(e) Barges shall not be moved from a
loading facility unless all bilges and
void spaces (except those used for
ballasting) are substantially free of
water. Periodic inspections and necessary pumping shall be carried out to
insure maintenance of such water-free
condition in order to minimize the free
surface effects, both in the longitudinal
and transverse directions. Except when
otherwise considered necessary for inspection or pumping, all hatch covers
and other hull closure devices for void
spaces and hull compartments other
than cargo spaces shall be closed and
secured at all times.
(f) During the time the cargo tanks
contain dangerous cargoes described in
paragraph (a) of this section in any
amount, in the liquid or gaseous state,
the barge shall be under constant surveillance.
(1) A strict watch of each unmanned
barge in tow shall be maintained from
the towing vessel while underway.
(2) A towing vessel engaged in transporting such unmanned barges shall
not leave them unattended. When a
barge is moored, but not gas free, it
shall be under the observation of a
watchman who may be a member of the
complement of the towing vessel, or a
terminal employee, or other person.
Such person shall be responsible for the
security of the barge and for keeping
unauthorized persons off the barge.
(g) The owner, operator, master, or
person in charge of any barge carrying
dangerous cargoes described in paragraph (a) of this section shall insure
that, while the barge is being towed
and during cargo transfer operations,
the persons as required by § 31.15–5 of
this subchapter and § 35.35–1 are provided.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGFR 70–10, 35 FR 3709, Feb. 25,
1970; CGD 73–243, 45 FR 18000, Mar. 20, 1980]

§ 35.01–55 Pilot boarding operation.
(a) The master shall ensure that pilot
boarding equipment is maintained as
follows:
(1) The equipment must be kept clean
and in good working order.
(2) Each damaged step or spreader
step on a pilot ladder must be replaced
in kind with an approved replacement
step or spreader step, prior to further
use of the ladder. The replacement step
or spreader step must be secured by the
method used in the original construction of the ladder, and in accordance
with manufacturer instructions.
(b) The master shall ensure compliance with the following during pilot
boarding operations:
(1) Only approved pilot boarding
equipment may be used.
(2) The pilot boarding equipment
must rest firmly against the hull of the
vessel and be clear of overboard discharges.
(3) Two man ropes, a safety line and
an approved lifebuoy with an approved
water light must be at the point of access and be immediately available for
use during boarding operations.
(4) Rigging of the equipment and embarkation/debarkation of a pilot must
be supervised in person by a deck officer.
(5) Both the equipment over the side
and the point of access must be adequately lit during night operations.
(6) If a pilot hoist is used, a pilot ladder must be kept on deck adjacent to
the hoist and available for immediate
use.
[CGD 79–032, 49 FR 25455, June 21, 1984]

§ 35.01–60 Person excluded.
Masters and pilots shall exclude from
the pilothouse and navigation bridge
while underway, all persons not connected with the navigation of the vessel. However, licensed officers of vessels, persons regularly engaged in
training, regulating, evaluating, or
learning the profession of pilot, officials of the United States Coast Guard,
United States Navy, United States
Coast and Geodetic Survey, United
States Army Corps of Engineers, Maritime Administration, and National
Transportation Safety Board may be
allowed in the pilothouse or upon the

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Coast Guard, DHS

§ 35.05–15

navigation bridge upon the responsibility of the master or pilot.
[CGD 91–023, 59 FR 16779, Apr. 8, 1994]

Subpart 35.03—Work Vests
§ 35.03–1 Application—TB/ALL.
(a) Provisions of this subpart shall
apply to all tank vessels.
§ 35.03–5 Approved types of work
vests—TB/ALL.
(a) Each buoyant work vest carried
under the permissive authority of this
section must be approved under—
(1) Subpart 160.053 of this chapter; or
(2) Subpart 160.077 of this chapter as
a commercial hybrid PFD.
[CGD 78–174A, 51 FR 4350, Feb. 4, 1986]

§ 35.03–10 Use—TB/ALL.
(a) Approved buoyant work vests are
considered to be items of safety apparel and may be carried aboard tank
vessels to be worn by crew members
when working near or over the water
under favorable working conditions.
They shall be used under the supervision and control of designated ship’s
officers. When carried, such vests shall
not be accepted in lieu of any portion
of the required number of approved life
preservers and shall not be substituted
for the approved life preservers required to be worn during drills and
emergencies.
§ 35.03–15 Shipboard
stowage—TB/
ALL.
(a) The approved buoyant work vests
shall be stowed separately from the
regular stowage of approved life preservers.
(b) The locations for the stowage of
work vests shall be such as not to be
easily confused with that for approved
life preservers.
§ 35.03–20 Shipboard inspections—TB/
ALL.
(a) Each work vest shall be subject to
examination by a marine inspector to
determine its serviceability. If found to
be satisfactory, it may be continued in
service, but shall not be stamped by a
marine inspector with a Coast Guard
stamp. If a work vest is found not to be
in a serviceable condition, then such

work vest shall be removed from the
vessel. If a work vest is beyond repair,
it shall be destroyed or mutilated in
the presence of a marine inspector so
as to prevent its continued use as a
work vest.
§ 35.03–25 Additional requirements for
hybrid work vests.
(a) In addition to the other requirements in this subpart, commercial hybrid PFD’s must be—
(1) Used, stowed, and maintained in
accordance with the procedures set out
in the manual required for these devices by § 160.077–29 of this chapter and
any limitation(s) marked on them; and
(2) Of the same or similar design and
have the same method of operation as
each other hybrid PFD carried on
board.
[CGD 78–174A, 51 FR 4350, Feb. 4, 1986; 51 FR
15497, Apr. 24, 1986]

Subpart 35.05—Officers and
Crews
§ 35.05–1 Officers and crews of tankships—T/ALL.
No tankship of the United States
shall be navigated unless she shall have
in her service and on board such complement of officers and crew, including
lifeboatmen and tankermen where required by the regulations in this subchapter, separately stated, as called for
in her certificate of inspection.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by USCG–2006–24371, 74 FR 11265,
Mar. 16, 2009]

§§ 35.05–5—35.05–10

[Reserved]

§ 35.05–15 Tank vessel security—TB/
ALL.
(a) Manned tank vessel. At least one
member of the crew of a manned tank
vessel shall be on board at all times except when the vessel is gas free or is
moored at a dock or terminal at which
watchman service is provided.
(b) Unmanned barge. (1) The owner,
managing operator, master, and person
in charge of a vessel towing a tank
barge that need not be manned, and
each of them, shall be responsible for
monitoring the security and integrity
of the tank barge and for ensuring adherence to proper safety precautions.

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§ 35.05–20

46 CFR Ch. I (10–1–14 Edition)

These responsibilities include, but are
not limited to—
(i) Ensuring that any tank barge
added to the tow has all tank openings
properly secured; has its freeing-ports
and scuppers, if any, unobstructed;
meets any loadline or freeboard requirements; and neither leaks cargo
into the water, voids, or cofferdams nor
leaks water into the tanks, voids, or
cofferdams;
(ii) Ensuring that every tank barge
in the tow is properly secured within
the tow;
(iii) Ensuring that periodic checks
are made of every tank barge in the
tow for leakage of cargo into the
water, voids, or cofferdams and for
leakage of water into the tanks, voids,
or cofferdams;
(iv) Knowing the cargo of every tank
barge in the tow, any hazards associated with the cargo, and what to do on
discovery of a leak;
(v) Ensuring that the crew of the vessel know the cargo of every tank barge
in the tow, any hazards associated with
the cargo, and what to do on discovery
of a leak;
(vi) Reporting to the Coast Guard
any leaks from a tank barge in the tow
into the water, as required by 33 CFR
151.15; and
(vii) Ensuring that the crew of the
vessel and other personnel in the vicinity of the tank barges in the tow follow
the proper safety precautions for tank
vessels, and that no activity takes
place in the vicinity of the barges that
could create a hazard.
(2) When a barge is moored and contains more oil than the normal
clingage and unpumpable bilge or sump
residues, the barge must be kept under
surveillance by a person responsible for
the security of the barge and for keeping unauthorized persons off the barge.
(3) When a barge is moored and contains no oil but is not gas free:
(i) It must be maintained under surveillance as required in paragraph
(b)(2) of this section; or
(ii) All cargo tank hatches must be
clearly marked in not less than three
inch lettering ‘‘Danger—Keep Out,’’
and all hatch covers must be closed and
dogged down in such a way that the

hatch cannot be opened by the use of
bare hands alone.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 80–009,48 FR 36459, Aug. 11,
1983; CGD 79–116, 60 FR 17155, Apr. 4, 1995]

§ 35.05–20 Physical condition of crew—
TB/ALL.
No person shall be engaged as a member of the crew on a tank vessel if he is
known by the employer to be physically or mentally incapable of performing the duties assigned him.
§ 35.05–25 Illness, alcohol, drugs—TB/
ALL.
(a) No person, known by the individual in charge of a tank vessel to be
under the influence of liquor or other
stimulant, or to be ill to such an extent as to unfit him for any particular
service on the tank vessel, shall be allowed to perform such service while in
such condition.
(b) When a member of the crew of a
tank vessel which is loading bulk cargo
of Grade A, B, or C arrives at the gangway and is observed to be in an intoxicated condition, he shall not be permitted to board the vessel without escort.

Subpart 35.07—Logbook Entries
§ 35.07–1 Application—TB/ALL.
(a) Except as specifically noted, the
provisions of this subpart shall apply
to all tank vessels.
§ 35.07–5 Logbooks and records—TB/
ALL.
(a) The master or person in charge of
a vessel that is required by 46 U.S.C.
11301 to have an official logbook shall
maintain the logbook on form CG-706.
The official logbook is available free to
masters of U.S.-flag vessels from the
officer in Charge, Marine Inspection, as
form CG-706B or CG-706C, depending on
the number of persons employed in the
crew. When the voyage is completed,
the master or person in charge shall
file the logbook with the Officer in
Charge, Marine Inspection.
(b) The master or person in charge of
a vessel that is not required by 46
U.S.C. 11301 to have an official logbook,
shall maintain, on board, an unofficial
logbook or record in any form desired

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Coast Guard, DHS

§ 35.10–3

for the purposes of making entries
therein as required by law or regulations in this subchapter. Such logs or
records are not filed with the Officer in
Charge, Marine Inspection, but must be
kept available for review by a marine
inspector for a period of 1 year after
the date to which the records refer.
Separate records of tests and inspections of fire fighting equipment must
be maintained with the vessel’s logs for
the period of validity of the vessel’s
certificate of inspection.
[CGD 95–027, 61 FR 25999, May 23, 1996]

§ 35.07–10 Actions required to be
logged—TB/ALL.
(a) General—TB/ALL. The actions and
observations noted in this section shall
be entered in the Official Logbook or in
logs or records considered to take place
of the Official Logbooks. This section
contains no requirements which are
not made in specific laws or in other
regulations in this subchapter, the
items being merely grouped together
for convenience.
(b) Entries—T/ALL. Entries shall be
made in the logs of tankships with respect to the following:
(1) Onboard training, musters, and
drills: held in accordance with subchapter W (Lifesaving Appliances or
Arrangements) of this chapter.
(2) Draft and load line marks. For
tankships of 150 gross tons and over,
prior to leaving port for ocean, coastwise, and Great Lakes voyages only.
See § 35.20–5.
(3) Verification of vessel compliance
with applicable stability requirements.
After loading and prior to departure
and at all other times necessary to assure the safety of the vessel. See
§ 35.20–7.
(4) Steering gear tests. Prior to departure, or for tank ships on voyages of
less than 48 hours duration or tankships operating on lakes, bays, sounds
and rivers, once every week. See § 35.20–
10.
(5) Fuel oil data. Upon receipt of fuel
oil on board to be used as fuel. See
§ 35.25–10.
(6) Inspections and tests of firefighting equipment. Once every year.
See § 31.10–18 of this subchapter.
(7) Operation and inspection of the
emergency lighting and power systems.

Once in each week that the vessel is
navigated. See § 35.10–15.
(8) Cargo gear inspections: At least
once a month. See § 31.37–70 of this subchapter.
(c) Entries—B/ALL. Entries shall be
made in the records for tank barges
with respect to the following:
(1) Inspections and tests of firefighting equipment. Once every year.
See § 31.10–18 of this subchapter.
(2) Draft and load line marks. For
tank barges of 150 gross tons and over,
prior to leaving port for ocean, coastwise, and Great Lakes voyages only.
(3) Cargo gear inspections: At least
once a month. See § 31.37–70 of this subchapter.
(4) Verification of vessel compliance
with applicable stability requirements.
After loading and prior to departure
and at all other times necessary to assure the safety of the vessel. See
§ 35.20–7.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 89–037, 57 FR 41821, Sept. 11,
1992; CGD 84–069, 61 FR 25286, May 20, 1996,
CGD 95–028, 62 FR 51199, Sept. 30, 1997]

Subpart 35.08—Stability
Information
§ 35.08–1

Posting of stability letter.

If a stability letter is issued under
§ 170.120 of this chapter, it must be
posted under glass or other suitable
transparent material in the pilothouse
of the vessel.
[CGD 79–023, 48 FR 51006, Nov. 4, 1983]

Subpart 35.10—Fire and
Emergency Requirements
§ 35.10–1 Emergency training, musters,
and drills—T/ALL.
Onboard training, musters, and drills
must be in accordance with subchapter
W (Lifesaving Appliances and Arrangements) of this chapter.
[CGD 84–069, 61 FR 25286, May 20, 1996]

§ 35.10–3

Display of plans—TB/ALL.

Barges with sleeping accommodations for more than six persons and all
self-propelled vessels shall have permanently exhibited for the guidance of

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§ 35.10–5

46 CFR Ch. I (10–1–14 Edition)

the officer in charge of the vessel the
following plans:
(a) General arrangement plans showing for each deck the fire control stations, the various sections enclosed by
fire-resisting bulkheads, together with
particulars of the fire alarms, detecting systems, the sprinkle installation
(if any), the fire extinguishing appliances, means of access to different
compartments, decks, etc., and the
ventilating systems including particulars of the master fan controls, the positions of dampers, the location of the
remote means of stopping fans, and
identification numbers of the ventilating fans serving each section. If
cargo compartments are ‘‘specially
suited for vehicles,’’ they shall be so
indicated on the plan. Alternatively, at
the discretion of the Commandant, the
aforementioned details may be set out
in any other medium, such as a booklet
or on computer software, provided that
the aforementioned details are available to each officer and a copy is retained on board at all times and is accessible during emergencies. For vessels constructed on or after September
30, 1997 or for existing vessels which
have their plans redrawn, the symbols
used to identify the aforementioned details shall be in accordance with IMO
Assembly resolution A.654(16). These
identical symbols can also be found in
ASTM Adjunct F 1626 (incorporated by
reference, see § 35.01–3).
(b) Plans showing clearly for each
deck the boundaries of the watertight
compartments, the openings therein
with the means of closure and position
of any controls thereof, and the arrangements for the correction of any
list due to flooding.
(c) The information contained in the
plans shall be kept up-to-date, and any
changes shall be recorded as soon as
possible.
[CGD 95–028, 62 FR 51199, Sept. 30, 1997, as
amended by USCG-2000–7790, 65 FR 58459,
Sept. 29, 2000; USCG–2014–0688, 79 FR 58280,
Sept. 29, 2014]

§ 35.10–5 Muster lists, emergency signals, and manning—T/ALL.
The requirements for muster lists,
emergency signals, and manning must
be in accordance with subchapter W

(Lifesaving Appliances and Arrangements) of this chapter.
[CGD 84–069, 61 FR 25287, May 20, 1996]

§ 35.10–15 Emergency
lighting
and
power systems—T/ALL.
(a) Where fitted, it shall be the duty
of the master to see that the emergency lighting and power systems are
tested and inspected at least once in
each week that the vessel is navigated
to be assured that the system is in
proper operating condition.
(b) Internal combustion engine driven emergency generators shall be tested under load for at least 2 hours, at
least once in each month that the vessel is navigated.
(c) Storage batteries for emergency
lighting and power systems shall be
tested at least once in each 6-month
period that the vessel is navigated to
demonstrate the ability of the storage
battery to supply the emergency loads
for the period of time specified in table
112.05–5(a) of this chapter.
(d) The date of the tests required by
this section and the condition and performance of the apparatus shall be
noted in the vessel’s Official Logbook
or in logs or records considered to take
the place of the Official Logbook.
[CGFR 65–50, 30 FR 16709, Dec. 30, 1965, as
amended by CGFR 70–143, 35 FR 19905, Dec.
30, 1970]

Subpart 35.15—Notice and Reporting of Casualty and Voyage Records
§ 35.15–1 Notice and reporting of casualty and voyage records—TB/ALL.
The requirements for providing notice and reporting of marine casualties
and for retaining voyage records are
contained in part 4 of this chapter.
[CGD 84–099, 52 FR 47535, Dec. 14, 1987; 53 FR
13117, Apr. 21, 1988]

Subpart 35.20—Navigation
§ 35.20–1 Notice to mariners; aids to
navigation—T/OCLB.
(a) Licensed officers are required to
acquaint themselves with the latest information published by the Coast
Guard and the National Geospatial-Intelligence Agency regarding aids to

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Coast Guard, DHS

§ 35.20–10

navigation, and neglect to do so is evidence of neglect of duty. It is desirable
that vessels navigating oceans and
coastwise and Great Lakes water shall
have available in the pilothouse for
convenient reference at all times a file
of the applicable Notice to Mariners.
(b) Local Notices to Mariners, published by each U.S. Coast Guard District, contain announcements and information on changes in aids to navigation and other marine information affecting the safety of navigation on
oceans and coastwise and the Great
Lakes. These notices may be obtained
free of charge from the U.S. Coast
Guard Navigation Center Web site
found at http://www.navcen.uscg.gov/
?pageName=lnmMain.
(c) Weekly Notices to Mariners
(worldwide coverage) are prepared
jointly by the National Geospatial-Intelligence Agency, National Ocean
Service, and the U.S. Coast Guard.
They include changes in aids to navigation and other important navigation
safety information in assembled form
for U.S. waters. Foreign marine information is also included in these notices. These notices are available without
charge
from
the
National
Geospatial-Intelligence Agency Web
site
found
at
http://msi.nga.mil/
NGAPortal/MSI.portal.
(d) As appropriate for the intended
voyage, all vessels must carry adequate
and up-to-date:
(1) Charts;
(2) Sailing directions;
(3) Coast pilots;
(4) Light lists;
(5) Notices to mariners;
(6) Tide tables;
(7) Current tables; and
(8) All other nautical publications
necessary. 1
[CGFR 66–33, 31 FR 15268, Dec. 6, 1966, as
amended by CGFR 68–32, 33 FR 5714, Apr. 12,
1968; CGD 75–074, 42 FR 5963, Jan. 31, 1977;
CGD 88–070, 53 FR 34534, Sept. 7, 1988; USCG2001–10224, 66 FR 48619, Sept. 21, 2001; USCG–
2014–0688, 79 FR 58280, Sept. 29, 2014]
1 For United States vessels in or on the
navigable waters of the United States, see 33
CFR 164.33.

§ 35.20–5 Draft of tankships—T/OC.
The master of every tankship shall,
whenever leaving port, enter the maximum draft of his vessel in the logbook.
§ 35.20–7 Verification of vessel compliance with applicable stability requirements—TB/ALL.
(a) Except as provided in paragraph
(d) of this section, after loading and
prior to departure and at all other
times necessary to assure the safety of
the vessel, the master or person in
charge shall determine that the vessel
complies with all applicable stability
requirements in the vessel’s trim and
stability book, stability letter, Certificate of Inspection, and Load Line Certificate, as the case may be. The vessel
may not depart until it is in compliance with these requirements.
(b) When determining compliance
with applicable stability requirements
the vessel’s draft, trim, and stability
must be determined as necessary.
(c) If a log book is required by § 35.07–
5, then the master or person in charge
must enter an attestation statement
verifying that the vessel complies with
the applicable stability requirements
at the times specified in paragraph (a)
and any stability calculations made in
support of the determination must be
retained on board the vessel for the duration of the voyage.
(d) Stability verification is not required for tank barges whose Certificate of Inspection carries draft restrictions for purposes other than stability.
[CGD 88–037, 57 FR 41821, Sept. 11, 1992, as
amended by USCG–2014–0688, 79 FR 58280,
Sept. 29, 2014]

§ 35.20–10 Steering gear test—T/ALL.
On all tankships making voyages of
more than 48 hours’ duration, the entire steering gear, the whistle, the
means of communication, and the signaling appliances between the bridge or
pilothouse and engineroom shall be examined and tested by a licensed officer
of the vessel within a period of not
more than 12 hours before leaving port.
All such vessels making voyages of less
than 48 hours’ duration or operating on
lakes, bays, sounds, and rivers shall be
so examined and tested at least once in
every week. The fact and time of such

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§ 35.20–20

46 CFR Ch. I (10–1–14 Edition)

examination and test shall be recorded
in the ship’s logbook.
§ 35.20–20 Master’s and officer’s
sponsibility—TB/ALL.

re-

Nothing in this part shall exonerate
any master or officer in command from
the consequences of any neglect to
keep a proper lookout or the neglect of
any precaution which may be required
by the ordinary practice of seamen or
by the special circumstances of the
case.
§ 35.20–30 Flashing the rays of a
searchlight or other blinding light—
T/ALL.
No person shall flash, or cause to be
flashed, the rays of a search light or
other blinding light onto the bridge or
into the pilothouse of any vessel under
way.
[CGD 95–027, 61 FR 26000, May 23, 1996]

§ 35.20–35

Whistling—T/ALL.

The unnecessary sounding of a vessel’s whistle is prohibited within any
harbor limits of the United States.
[CGD 95–027, 61 FR 26000, May 23, 1996]

§ 35.20–40 Maneuvering
tics—T/OC.

characteris-

For each ocean and coastwise tankship of 1,600 gross tons or over, the following apply:
(a) The following maneuvering information must be prominently displayed
in the pilothouse on a fact sheet:
(1) For full and half speed, a turning
circle diagram to port and starboard
that shows the time and the distance of
advance and transfer required to alter
the course 90 degrees with maximum
rudder angle and constant power settings.
(2) The time and distance to stop the
vessel from full and half speed while
maintaining approximately the initial
heading with minimum application of
rudder.
(3) For each vessel with a fixed propeller, a table of shaft revolutions per
minute for a representative range of
speeds.
(4) For each vessel with a controllable pitch propeller a table of control
settings for a representative range of
speeds.

(5) For each vessel that is fitted with
an auxiliary device to assist in maneuvering, such as a bow thruster, a table
of vessel speeds at which the auxiliary
device is effective in maneuvering the
vessel.
(b) The maneuvering information
must be provided for the normal load
and normal ballast condition for:
(1) Calm weather—wind 10 knots or
less, calm sea;
(2) No current;
(3) Deep water conditions—water
depth twice the vessel’s draft or greater; and
(4) Clean hull.
(c) At the bottom of the fact sheet,
the following statement must appear:
WARNING
The response of the (name of the vessel) may
be different from those listed above if any of
the following conditions, upon which the maneuvering information is based, are varied:
(1) Calm weather—wind 10 knots or less,
calm sea;
(2) No current;
(3) Water depth twice the vessel’s draft or
greater;
(4) Clean hull; and
(5) Intermediate drafts or unusual trim.

(d) The information on the fact sheet
must be:
(1) Verified six months after the vessel is placed in service; or
(2) Modified six months after the vessel is placed into service and verified
within three months thereafter.
(e) The information that appears on
the fact sheet may be obtained from:
(1) Trial trip observations;
(2) Model tests;
(3) Analytical calculations;
(4) Simulations;
(5) Information established from another vessel of similar hull form,
power, rudder and propeller; or
(6) Any combination of the above.
The accuracy of the information in the
fact sheet required is that attainable
by ordinary shipboard navigation
equipment.
(f) The requirements for information
for fact sheets for specialized craft
such as semi-submersibles, hydrofoils,
hovercraft and other vessels of unusual
design will be specified on a case by
case basis.
[CGD 73–78, 40 FR 2689, Jan. 15, 1975]

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Coast Guard, DHS
§ 35.20–45

§ 35.30–1

Use of Auto Pilot—T/ALL.

Except as provided in 33 CFR 164.13,
when the automatic pilot is used in:
(a) Areas of high traffic density;
(b) Conditions of restricted visibility;
and
(c) All other hazardous navigational
situations, the master shall ensure
that:
(1) It is possible to immediately establish manual control of the ship’s
steering;
(2) A competent person is ready at all
times to take over steering control;
and
(3) The changeover from automatic
to manual steering and vice versa is
made by, or under, the supervision of
the officer of the watch.
[CGD 75–074, 42 FR 5963, Jan. 31, 1977, as
amended by CGD 91–204, 58 FR 27633, May 10,
1993]

Subpart 35.25—Engine
Department
§ 35.25–1 Examination of boilers and
machinery by engineer—T/ALL.
It shall be the duty of an engineer
when assuming charge of the boilers to
examine the same forthwith and thoroughly. If any part thereof is found in
bad condition, the engineer shall immediately report the facts to the master, owner, or agent, and to the nearest
Officer in Charge, Marine Inspection.
[CGD 95–027, 61 FR 26000, May 23, 1996]

§ 35.25–5 Repairs
of
boilers
and
unfired pressure vessels and reports of repairs or accidents by
chief engineer—TB/ALL.
(a) Before making any repairs to boilers or unfired pressure vessels, the
chief engineer shall submit a report
covering the nature of the repairs to
the Officer in Charge, Marine Inspection, at or nearest to the port where
the repairs are to be made.
(b) In the event of an accident to a
boiler, unfired pressure vessel, or machinery tending to render the further
use of the item itself unsafe until repairs are made, or if by ordinary wear
such items become unsafe, a report
shall be made by the chief engineer immediately to the Officer in Charge, Ma-

rine Inspection, or if at sea, immediately upon arrival at port.
§ 35.25–10 Requirements for fuel oil—
T/ALL.
(a) Oil to be used as fuel to be burned
under boilers on tankships shall have a
flashpoint of not less than 140°F.
(Pensky-Martens Closed Cup Method,
ASTM D 93) (incorporated by reference,
see § 35.01–3).
(b) It shall be the duty of the chief
engineer to make an entry in the log of
each supply of fuel oil received on
board, stating the quantity received,
the name of the vendor, the name of
the oil producer, and the flashpoint
(Pensky-Martens Closed Cup Method,
ASTM D 93) (incorporated by reference,
see § 35.01–3) for which it is certified by
the producer.
(c) It shall be the further duty of the
chief engineer to draw and seal at the
time the supply is received on board, a
half-pint sample of each lot of fuel oil,
such sample to be preserved until that
particular supply of oil is exhausted.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGFR 68–82, 33 FR 18805, Dec. 18,
1968; CGD 73–254, 40 FR 40163, Sept. 2, 1975;
USCG-2000–7790, 65 FR 58459, Sept. 29, 2000]

§ 35.25–15 Carrying of excess steam—
TB/ALL.
It shall be the duty of the chief engineer of any tank vessel to see that a
steam pressure is not carried in excess
of that allowed by the certificate of inspection, and to see that the safety
valves, once set by the inspector, are in
no way tampered with or made inoperative.
[CGD 95–028, 62 FR 51199, Sept. 30, 1997]

Subpart 35.30—General Safety
Rules
§ 35.30–1 Warning signals and signs—
TB/ALL.
(a) Red warning signals. During transfer of bulk cargo while fast to a dock,
a red signal (flag by day and electric
lantern at night) shall be so placed
that it will be visible on all sides.
While transferring bulk cargo at anchor, a red flag only shall be displayed.

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§ 35.30–5

46 CFR Ch. I (10–1–14 Edition)

(b) Warning sign at gangway. A sign
shall be displayed to warn persons approaching the gangway, while a vessel
is moored or anchored unless it is
empty and gas-freed. The sign shall
state in letters not less than 2 inches
high substantially as follows:
Warning
No open lights.
No smoking.
No visitors.

(c) Warning sign in radio room. A sign
shall be placed in radio room warning
against the use of radio equipment during transfer of Grade A, B, or C liquids,
except by permission of senior deck officer.
(d) [Reserved]
(e) Additional placards or signs required in connection with the movement of certain open hopper type
barges are described in § 35.01–45.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGFR 70–143, 35 FR 19905, Dec.
30, 1970; CGD 73–96, 42 FR 49024, Sept. 26, 1977;
CGD 73–243, 45 FR 18000, Mar. 20, 1980]

§ 35.30–5 Fires, matches, and smoking—TB/ALL.
(a) General. In making the determinations required under paragraphs (b),
(c), and (d) of this section the senior
deck officer on duty, who shall be a licensed
officer
or
certificated
tankerman, shall exercise his skill and
experience with due regard to attendant conditions and circumstances, including consideration for location of
shore side facilities, maintenance of
mobility, provision for fire protection,
state or change of winds, tides, sea,
weather conditions, forces of nature
and other circumstances generally beyond human control.
(b) Boiler fires. Boiler fires are normally permitted during cargo transfer
operations: Provided, That prior to
loading Grades A, B, and C cargoes, the
senior deck officer on duty, who shall
be a licensed officer or certificated
tankerman, shall make an inspection
to determine whether in his judgment
boiler fires may be maintained with
reasonable safety during the loading
operation.
(c) Smoking. Smoking is prohibited on
the weather decks of tank vessels when
they are not gas free or are alongside

docks. At other times and places the
senior deck officer on duty, who shall
be a licensed officer or certificated
tankerman, shall designate when and
where the crew may smoke: Provided,
That prior to loading Grade A, B, or C
cargo the master or senior deck officer
on duty shall make an inspection to determine if and where, in his judgment,
smoking may be permitted with reasonable safety during the loading operation.
(d) Matches. The use of other than
safety matches is forbidden aboard
tank vessels at all times.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 95–012, 60 FR 48049, Sept. 18,
1995]

§ 35.30–10 Cargo tank hatches, ullage
holes, and Butterworth plates—TB/
ALL.
No cargo tank hatches, ullage holes,
or Butterworth plates shall be opened
or shall remain open without flame
screens, except under the supervision
of the senior members of the crew on
duty, unless the tank opened is gas
free.
§ 35.30–15 Combustible gas indicator—
TB/ALL.
(a) The provisions of this section
shall apply only to United States flag
vessels.
(b) Manned tank barges and tankships authorized to carry Grade A, B,
C, or D liquids at any temperature, or
Grade E liquids at elevated temperatures, shall be provided with a combustible gas indicator suitable for determining the presence of explosive concentrations of the cargo carried. An indicator which bears the label of Underwriters’ Laboratories Inc., Factory Mutual Engineering Division, or other organizations acceptable to the Commandant will be accepted as meeting
this requirement.
§ 35.30–20 Emergency equipment—TB/
ALL
(a) Two emergency outfits, stored for
use in widely separated, accessible locations, are required for the following:
(1) All tankships on international
voyage.
(2) All tankships over 1,000 gross
tons.

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Coast Guard, DHS

§ 35.30–30

(3) All tankships having cargo tanks
which exceed 15 feet in depth, measured
from the deck to the lowest point at
which cargo is carried.
(b) One emergency outfit is required
for all manned tank barges having
cargo tanks which exceed 15 feet in
depth, measured from the deck to the
lowest point at which cargo is carried.
(c) Each emergency outfit shall be
equipped as follows:
(1) One pressure-demand, open-circuit, self-contained breathing apparatus, approved by the Mine Safety and
Health Administration (MSHA) and by
the National Institute for Occupational
Safety and Health (NIOSH) and having
at a minimum a 30-minute air supply, a
full facepiece, and a spare charge.
(2) One lifeline with a belt or a suitable harness.
(3) One, Type II or Type III, flashlight constructed and marked in accordance with ASTM F 1014 incorporated by reference, see § 35.01–3).
(4) One fire ax.
(5) Boots and gloves of rubber or
other electrically nonconducting material.
(6) A rigid helmet which provides effective protection against impact.
(7) Protective clothing of material
that will protect the skin from the
heat of fire and burns from scalding
steam. The outer surface shall be water
resistant.
(d) A self-contained compressed-air
breathing apparatus previously approved by MSHA and NIOSH under part
160, subpart 160.011, of this chapter may
continue in use as required equipment
if it was part of the vessel’s equipment
on November 23, 1992, and as long as it
is maintained in good condition to the
satisfaction of the Officer in Charge,
Marine Inspection.
(e) Lifelines shall be of steel or
bronze wire rope. Steel wire rope shall
be either inherently corrosion resistant
or made so by galvanizing or tinning.
Each end shall be fitted with a hook
with keeper having a throat opening
which can be readily slipped over a 5/8inch bolt. The total length of the lifeline shall be dependent upon the size
and arrangement of the vessel, and
more than one line may be hooked together to achieve the necessary length.
No individual length of lifeline may be

less than 50 feet in length. The assembled lifeline shall have a minimum
breaking strength of 1,500 pounds.
[CGD 73–11R, 38 FR 27354, Oct. 3, 1973, as
amended by CGD 75–074, 42 FR 5963, Jan. 31,
1977; CGD 82–042, 53 FR 17704, May 18, 1988;
CGD 86–036, 57 FR 48324, Oct. 23, 1992; 57 FR
56406, Nov. 27, 1992; CGD 95–028, 62 FR 51199,
Sept. 30, 1997; USCG-1999–5151, 64 FR 67177,
Dec. 1, 1999]

§ 35.30–25

Explosives—TB/ALL.

Fulminates or other detonating compounds in bulk in dry condition; explosive compositions that ignite spontaneously or undergo marked decomposition when subjected for forty-eight
consecutive hours to a temperature of
167 °F. or more; composition containing
an ammonium salt and a chlorate; and
other like explosives shall not be accepted, stored, stowed or transported
on board tank vessels.
§ 35.30–30 Portable
ment—TB/ALL.

electric

Portable electric equipment must not
be used in a hazardous location described in subpart 111.105 of this chapter except:
(a) Self-contained, battery-fed, explosion-proof lamps approved by Underwriters Laboratories Inc., Factory Mutual Research Corporation, or other
independent laboratory recognized by
the Commandant, for use in a Class I,
Division 1 location for the electrical
group classification of the cargo;
(b) Intrinsically safe equipment approved by Underwriters Laboratories
Inc., Factory Mutual Research Corporation, or other independent laboratory recognized by the Commandant,
for use in a Class I, Division 1 location
for the electrical group classification
of the cargo; and
(c) Any electrical equipment, if:
(1) The hazardous location is:
(i) Enclosed; and
(ii) Gas free;
(2) The adjacent compartments are:
(i) Gas free;
(ii) Inerted;
(iii) Filled with water;
(iv) Filled with Grade E liquid; or
(v) Spaces where flammable gases are
not expected to accumulate; and:
(3) Each compartment where flammable gas is expected to accumulate is:

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§ 35.30–35

46 CFR Ch. I (10–1–14 Edition)

(i) Closed; and
(ii) Secured.

specified in paragraph (a)(1) of this section which do not exceed a capacity of
five gallons may be stowed below the
weather deck in a paint or lamp locker.

[CGD 74–125A, 47 FR 15230, Apr. 8, 1982]

§ 35.30–35 Spark producing devices—
TB/ALL.
(a) Where Grades A, B, C, and D liquid cargoes are involved, power driven
or manually operated spark producing
devices shall not be used in bulk cargo
tanks, fuel oil tanks, cargo pumprooms, or enclosed spaces immediately
above or adjacent to bulk cargo tanks
unless all the following conditions are
met:
(1) The compartment itself is gasfree;
(2) The compartments adjacent and
the compartments diagonally adjacent
are either:
(i) Gas-free;
(ii) Inerted;
(iii) Filled with water;
(iv) Contain Grade E liquid and are
closed and secured; or
(v) Are spaces in which flammable
vapors and gases normally are not expected to accumulate; and,
(3) All other compartments of the
vessel in which flammable vapors and
gases may normally be expected to accumulate are closed and secured.
(b) This section does not prohibit the
use of small hand tools in such locations.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by USCG-2004–18884, 69 FR 58345,
Sept. 30, 2004]

§ 35.30–40 Flammable liquid and gas
fuels as ship’s stores—TB/ALL.
Flammable liquids and gases other
than diesel fuel, to be used as fuel for
approved equipment must satisfy the
following:
(a) Stowage must be in containers approved by DOT or A.S.M.E. for the contents carried, or in a portable safety
container approved by a recognized
testing laboratory for the contents carried.
(b) The contents must be marked on
the containers, and the containers
must be labeled in accordance with
DOT requirements for flammable liquids and gases.
(c) Containers must be stowed on or
above the weather deck in locations
designated by the master. Containers

[CGD 80–009, 48 FR 36459, Aug. 11, 1983, as
amended by CGD 86–033, 53 FR 36024, Sept. 16,
1988; CGD 95–028, 62 FR 51199, Sept. 30, 1997]

Subpart 35.35—Cargo Handling
§ 35.35–1 Persons on duty—TB/ALL.
(a) On each tankship required to be
documented under the laws of the
United States, the owner, managing
operator, master, and person in charge
of the vessel, and each of them, shall
ensure that—
(1) Enough ‘‘Tankerman-PICs’’ or restricted
‘‘Tankerman-PICs’’,
and
‘‘Tankerman-Assistants’’,
authorized
for the classification of cargo carried,
are on duty to safely transfer liquid
cargo in bulk or safely clean cargo
tanks; and
(2) Each transfer of liquid cargo in
bulk and each cleaning of a cargo tank
is supervised by a person qualified to
be the person in charge of the transfer
or the cleaning under subpart C of 33
CFR part 155.
(b) On each United States tank barge
subject to inspection—
(1) The owner, managing operator,
master, and person in charge of the
vessel, and each of them, shall ensure
that no transfer of liquid cargo in bulk
or cleaning of a cargo tank takes place
unless under the supervision of a qualified person designated as the person in
charge of the transfer or the cleaning
under subpart C of 33 CFR part 155; and
(2) The person designated as the person in charge of the transfer shall ensure that—
(i) Enough qualified personnel are on
duty to safely transfer liquid cargo in
bulk or safely clean cargo tanks; and
(ii) The approved portable extinguishers required by table 34.50–10(a) of
this chapter are aboard and readily
available before any transfer of liquid
cargo in bulk or any operation of barge
machinery or boilers.
(c) On each foreign tankship, the
owner, managing operator, master, and
person in charge of the vessel, and each
of them, shall ensure that—
(1) Enough personnel, qualified for
the classification of cargo carried, are

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Coast Guard, DHS

§ 35.35–10

on duty to safely transfer liquid cargo
in bulk or safely clean cargo tanks; and
(2) Each transfer of liquid cargo in
bulk and each cleaning of a cargo tank
is supervised by a qualified person designated as a person in charge of the
transfer or the cleaning under subpart
C of 33 CFR part 155.
(d) On each foreign tank barge—
(1) The owner, managing operator,
master, and person in charge of the
vessel, and each of them, shall ensure
that no transfer of liquid cargo in bulk
or cleaning of a cargo tank takes place
unless under the supervision of a qualified person designated as the person in
charge of the transfer or the cleaning
under subpart C of 33 CFR part 155.
(2) The person designated as the person in charge of the transfer shall ensure that enough qualified personnel
are on duty to safely transfer liquid
cargo in bulk or safely clean cargo
tanks.
(e) The person in charge of the transfer of liquid cargo in bulk on the tank
vessel shall be responsible for the safe
loading and discharge of the liquid
cargo in bulk.
(f) The person in charge of the transfer of liquid cargo in bulk on each
United States tank vessel, when
lightering to or from a foreign tank
vessel, shall ensure that the person in
charge on the foreign tank vessel, or
his or her interpreter, is capable of
reading, speaking, and understanding
the English language well enough to
allow a safe transfer.
[CGD 79–116, 60 FR 17155, Apr. 4, 1995]

§ 35.35–4 Insulating flange joint or
nonconductive hose—TB/ALL.
(a) A vessel’s cargo hose string or
vapor recovery hose must use an insulating flange or one continuous length
of nonconductive hose between the vessel and the shore transfer facility. For
each vapor recovery hose or cargo hose
string, only one insulating flange or
non-conductive hose must be provided.
See 33 CFR 154.2101(g).
(b) The insulating flange must be inserted at the jetty end and take all reasonable measures to ensure the connection will not be disturbed. The hose
must be suspended to ensure the hoseto-hose connection flanges do not rest
on the jetty deck or other structure

that may render the insulating flange
ineffective or short circuited by contact with external metal or through
the hose handling equipment.
(c) The insulating flange must be inspected and tested at least annually, or
more frequently if necessary due to deterioration caused by environmental
exposure, usage, and damage from handling. After installation, the insulation
reading between the metal pipe on the
shore side of the flange and the end of
the hose or metal arm when freely suspended must not be less than 1,000
ohms. A suitable DC insulation tester
must be used.
[USCG–1999–5150, 78 FR 42641, July 16, 2013]

§ 35.35–5 Electrical bonding—TB/ALL.
The use of a vessel/shore bonding
cable or wire is permissible only if
operationally necessary and only in
compliance with the requirements of
paragraphs (a) and (b) of this section.
(a) A switch on the jetty that is in series with the bonding cable must be
provided. The switch must be listed or
certified by a Coast Guard accepted
independent laboratory and approved
for use in a Class I Zone 1 or Class I,
Division 1 location, and the appropriate Gas Group of the cargo authorized for the vessel.
(b) The connection point for the
bonding cable system must be at least
20 feet from the cargo manifold area,
the cargo hose string, or the vapor recovery connection. The switch must be
in the off position before connecting or
disconnecting the bonding cable. The
bonding cable must be attached before
the cargo hoses or arms, or the vapor
recovery connections are connected.
The bonding cable must be removed
only after the cargo hoses or arms, or
the vapor recovery connections have
been disconnected.
[USCG–1999–5150, 78 FR 42642, July 16, 2013]

§ 35.35–10 Closing
of
freeing-ports,
scuppers, and sea valves—TB/ALL.
The person in charge of each transfer
of liquid cargo in bulk shall ensure
that all freeing-ports and scuppers are
properly plugged during the transfer
except on tank vessels using water for
cooling decks. Although under no circumstances may sea valves be secured

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§ 35.35–15

46 CFR Ch. I (10–1–14 Edition)

by locks, the valves must be closed,
and lashed or sealed, to indicate that
they should not be opened during the
transfer.
[CGD 79–116, 60 FR 17156, Apr. 4, 1995]

§ 35.35–15 Connecting for cargo transfer—TB/ALL.
(a) Movement of the vessel must be
considered to insure safe cargo transfer. Suitable material must be used in
joints and in couplings to insure that
connections are tight. A bolted flanged
coupling must not have less than four
bolts, under any circumstances.
(b) When cargo connections are supported by ship’s tackle, the person in
charge of the transfer of liquid cargo in
bulk shall determine the weights involved to ensure that adequate tackle
is used.
(c) Pans or buckets shall be placed
under cargo hose connections on the
tank vessel.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 80–009, 48 FR 36459, Aug. 11,
1983; CGD 79–116, 60 FR 17156, Apr. 4, 1995]

§ 35.35–20 Inspection before transfer of
cargo—TB/ALL.
Before the transfer of liquid cargo in
bulk, the person in charge of the transfer shall inspect the vessel to ensure
the following:
(a) Warnings are displayed as required.
(b) No repair work in way of cargo
spaces is being carried on without his
permission.
(c) Cargo connections have been
made as described in § 35.35–15 and
cargo valves are set.
(d) All cargo connections have been
made to the vessel’s pipeline, and not
through an open end hose led through a
hatch.
(e) In loading Grades A, B, and C cargoes, there are no fires or open flames
present on the deck, or in any compartment which is located on, facing, open,
and adjacent to that part of the deck
on which cargo connections have been
made.
(f) The shore terminal or the other
tank vessel concerned has reported
itself in readiness for transfer of cargo.
(g) All sea valves connected to the
cargo piping system are closed.

(h) In loading Grades A, B, and C cargoes, that an inspection has been made
to determine whether boiler fires can
be maintained with reasonable safety.
(i) In loading Grades A, B, and C cargoes, that an inspection has been made
to determine whether galley fires can
be maintained with reasonable safety.
(j) In loading Grades A, B, or C cargoes, that an inspection has been made
to determine whether smoking may be
permitted with reasonable safety in
areas other than the weather deck.
(k) On tankships the construction or
conversion of which is started on or
after July 1, 1951, which are to load or
discharge Grade A cargo, all openings
in the top of the tanks, except the
branch vent lines and covers to ullage
hole sounding pipes, are tightly closed.
(See §§ 32.20–20 and 32.55–20 of this subchapter.)
(l) On tankships the construction or
conversion of which is started on or
after July 1, 1951, which are to load or
discharge Grade A cargo, the method
for determining the liquid level in the
tank without opening ullage holes,
cargo hatches or Butterworth plates is
in proper order. (See § 32.20–20 of this
subchapter.)
(m) When a transfer operation includes collection of cargo vapor to or
from a vessel’s cargo tanks through a
vapor control system not located on
the vessel:
(1) Each part of the vapor collection
system is aligned to allow vapor to
flow to or from a facility vapor control
system, or if lightering, to the other
vessel;
(2) Vapor collection hoses or arms are
connected to the vessel vapor collection connection;
(3) The electrical insulation requirements of 33 CFR 154.810(g) or § 39.40–3(c)
of this subchapter are provided between the vessel vapor connection and
the facility or service vessel vapor connection;
(4) The maximum cargo transfer rate
is determined in accordance with
§ 39.30–1(d) of this subchapter;
(5) The maximum and minimum operating pressures at the facility vapor
connection, or vessel vapor connection
if lightering, are determined;
(6) The overfill control system on a
tank barge, if fitted in accordance with

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§ 35.35–30

§ 39.20–9(b) of this subchapter, is connected to the facility, tested and operating properly;
(7) Each alarm required by §§ 39.20–7,
39.20–9 and 39.40–3(a) of this subchapter
has been tested not more than 24 hours
prior to the start of the transfer operation and is operating properly;
(8) Each vapor recovery hose has no
unrepaired loose covers, kinks, bulges,
soft spots, or any other defect which
would permit the discharge of vapors
through the hose material, and no
gouges, cuts, or slashes that penetrate
the first layer of hose reinforcement;
and
(9) The oxygen content in the vapor
space of each of the vessel’s inerted
cargo tanks connected to the vapor collection system is—
(i) At or below 60 percent by volume
of the cargo’s minimum oxygen concentration for combustion at the start
of cargo transfer; or
(ii) At or below 8 percent by volume,
at the start of cargo transfer, for vapor
of crude oil, gasoline blends, or benzene.
[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 80–009, 48 FR 36459, Aug. 11,
1983; CGD 88–102, 55 FR 25446, June 21, 1990;
CGD 79–116, 60 FR 17156, Apr. 4, 1995; USCG–
1999–5150, 78 FR 42642, July 16, 2013]

§ 35.35–25 Approval to start transfer of
cargo—TB/ALL.
When the person in charge of the
transfer of liquid cargo in bulk has ensured that the requirements of §§ 35.35–
20 and 35.35–30 have been met, he or she
may give approval to start the transfer.
[CGD 79–116, 60 FR 17156, Apr. 4, 1995]

§ 35.35–30 ‘‘Declaration of Inspection’’
for tank vessels—TB/ALL.
(a) After an inspection under § 35.35–
20, but before a transfer of cargo, fuel
oil, or bunkers may commence as described in this section and 33 CFR
156.120 and 156.150, the person in charge
of the transfer shall prepare, in duplicate, a Declaration of Inspection. The
original must be kept aboard the vessel, and the duplicate provided to the
terminal supervisor or that person’s
representative. The supervisor or the
representative may, upon demand, inspect the vessel to determine whether

its condition is as stated on the Declaration of Inspection.
(b) The Declaration of Inspection
may be in any form, but must contain
at least:
Declaration of Inspection Before Transfer of
Liquid Cargo in Bulk
Date lllllllllllllllllllll
Vessel llllllllllllllllllll
Port of
lllllllllllllllllll
Product[s]
being
transferred—
(Classification[s] and Kind[s])
llllllllllllllllllllllll
llllllllllllllllllllllll
I, llllllllll, the person in charge
of the transfer of liquid cargo in bulk about
to begin, do certify that I have personally inspected this vessel with reference to the following requirements set forth in 46 CFR
35.35–20, and that opposite each of the applicable items listed below I have indicated
whether the vessel complies with all pertinent regulations.
(1) Are warnings displayed as required?
(2) Is there any repair work in way of cargo
spaces being carried on for which permission
has not been given?
(3) Have cargo connections been made as
described in 46 CFR 35.35–15 and are cargo
valves set?
(4) Have all cargo connections been made
to the vessel’s pipeline and not through an
open-end hose led through a hatch?
(5) Are there any fires or open flames
present on the deck or in any compartment
which is located on, open or adjacent to or
facing the main deck of the vessels on which
the cargo connections have been made?
(6) Has the shore terminal or other tank
vessel concerned reported itself in readiness
for transfer of cargo?
(7) Are sea valves connected to the cargo
piping system closed?
(8) If Grades, A, B, or C cargoes are to be
loaded and boiler fires are lighted, has an inspection been made to determine whether
these fires may be maintained with reasonable safety?
(9) If Grades A, B, or C cargoes are to be
loaded and galley fires are lighted, has an inspection been made to determine whether
the galley fires may be maintained with reasonable safety?
(10) If Grades A, B, or C cargoes are to be
loaded, has an inspection been made to determine whether smoking is to be permitted
in areas not on the weather decks?
(11) If smoking is to be permitted in areas
not on the weather decks, have those areas
been designated?
(12) Is the inert gas system being operated
as necessary to maintain an inert atmosphere in the cargo tanks in compliance with
46 CFR 32.53–5?

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§ 35.35–35

46 CFR Ch. I (10–1–14 Edition)

(13) Have the applicable sections of the vessel response plan been reviewed before commencing transfer, and arrangements or contingencies made for implementation of the
Plan should the need arise?

(c) In addition to the requirements in
paragraph (b) of this section, if a transfer operation includes the collection of
cargo vapor to or from a vessel’s cargo
tanks through a vapor control system
not located on the vessel, the Declaration of Inspection must include the following as an appendix:
(1) Is each part of the vapor collection system aligned to allow vapor to flow to or from
the facility vapor connection or, if
lightering, to the other vessel?
(2) Are the vapor collection hoses or arms
connected to the vessel’s vapor collection
connection?
(3) Are the vessel and facility vapor connections electrically isolated?
(4) Have the initial transfer rate and the
maximum transfer rate been determined?
(5) Have the maximum and minimum operating pressures at the facility vapor connection, or the vessel vapor connection if
lightering, been determined?
(6) Have all alarms required by §§ 39.20–7,
39.20–9 and 39.40–3(a) of this subchapter been
tested within 24 hours prior to the start of
the transfer operation and found to be operating properly?
(7) Is each vapor recovery hose free of
unrepaired loose covers, kinks, bulges, soft
spots, or any other defect which would permit the discharge of vapors through the hose
material, and gouges, cuts, or slashes that
penetrate the first layer of hose reinforcement?
(8) Has the oxygen content in the vapor
space of each of the vessel’s inerted cargo
tanks connected to the vapor collection system been verified to be—
(i) At or below 60 percent by volume, at the
start of cargo transfer, of the cargo’s minimum oxygen concentration for combustion;
or
(ii) At or below 8 percent by volume, at the
start of cargo transfer, for vapor of crude oil,
gasoline blends, or benzene.
[CGD 80–009, 48 FR 36459, Aug. 11, 1983, as
amended by CGD 88–102, 55 FR 25446, June 21,
1990; CGD 79–116, 60 FR 17156, Apr. 4, 1995;
CGD 79–116, 62 FR 25135, May 8, 1997; USCG–
1999–5150, 78 FR 42642, July 16, 2013]

§ 35.35–35 Duties of person in charge
of transfer—TB/ALL.
The person in charge of the transfer
of liquid cargo in bulk, fuel oil in bulk,
or bunkers in bulk shall control the
transfer as follows:

(a) Supervise the operations of cargosystem valves.
(b) Commence transfer of cargo at
slow rate of cargo flow.
(c) Observe cargo connections for
leakage.
(d) Observe pressure on cargo system.
(e) If transfer is loading (rather than
discharging), observe rate of loading to
avoid overflow of tanks.
(f) Comply with 33 CFR 156.120 and
156.150.
[CGD 79–116, 60 FR 17156, Apr. 4, 1995, as
amended by CGD 79–116, 62 FR 25135, May 8,
1997]

§ 35.35–40 Conditions
under
which
transfer operations shall not be
commenced or if started shall be
discontinued—TB/ALL.
Cargo transfer operations shall not
be started or, if started, shall be discontinued under the following conditions:
(a) During severe electrical storms.
(b) If a fire occurs on the wharf or on
the tanker or in the vicinity.
§ 35.35–42 Restrictions
on
vessels
alongside a tank vessel loading or
unloading cargo of Grade A, B, or
C—TB/ALL.
(a) No vessel may come alongside or
remain alongside a tank vessel in way
of its cargo tanks while it is loading or
unloading cargo of Grade A, B, or C
without permission of the person in
charge of the transfer on the tank vessel.
(b) No vessel may come alongside or
remain alongside a tank vessel in way
of its cargo tanks while it is loading or
unloading cargo of Grade A, B, or C unless the conditions then prevailing are
acceptable to the persons in charge of
cargo-handling on both vessels.
[CGD 79–116, 60 FR 17156, Apr. 4, 1995]

§ 35.35–45 Auxiliary steam, air, or electric current—B/ALL.
When discharging cargo from one or
more barges, the towing vessel may
furnish steam, air, or electric current
for pumps on barges or dock, but in no
case shall the cargo pass through or
over the towing vessel.

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Coast Guard, DHS

§ 35.40–7

§ 35.35–50 Termination of transfer operations—TB/ALL.
(a) When transfer operations are
completed the valves on cargo connections on the vessel shall be closed. The
cargo connections shall be drained of
cargo.
(b) [Reserved]
§ 35.35–55 Transfer of other cargo or
stores on tank vessels—TB/ALL.
(a) No packaged goods, freight, or
ship’s stores may be loaded or unloaded
during the loading or unloading of
cargo of Grade A, B, or C except by permission of the person in charge of the
transfer of liquid cargo in bulk. No explosives may be loaded, unloaded, or
carried as cargo on any tank vessel
containing cargo of Grade A, B, or C.
(b) Where package and general cargo
is carried directly over bulk cargo
tanks, it shall be properly dunnaged to
prevent chafing of metal parts and securely lashed or stowed.

at the pressure at which they are set to
open.
(c) Cargo pump pressure gage shall be
tested at least once a year for accuracy.
(d) The cargo discharge piping of all
tank vessels shall be tested at least
once each year for tightness, at the
maximum working pressure.
§ 35.35–75

§ 35.35–85

(a) Tank barges may be permitted to
transport deck cargoes directly over
bulk cargo spaces when the nature of
such deck cargoes and the methods of
loading and unloading same do not create an undue hazard. Such tank barges
shall have their decks properly
dunnaged to prevent chafing between
the steel parts of the vessel and the
deck cargo.
(b) [Reserved]
§ 35.35–70 Maintenance of cargo handling equipment—TB/ALL.
The cargo handling equipment shall
be maintained by the tank vessel’s personnel in accordance with the regulations in this subchapter, including the
following:
(a) Cargo hose shall not be used in
transfer operations in which the pressures are such that leakage of cargo occurs through the body of the hose.
(b) Cargo pump relief valves shall be
tested at least once each year to determine that they function satisfactorily

Air compressors—TB/ALL.

No person may operate, install, or reinstall an air compressor in a cargo
area described in § 32.35–15 of this subchapter.
[CGD 95–028, 62 FR 51200, Sept. 30, 1997]

[CGFR 65–50, 30 FR 16704, Dec. 30, 1965, as
amended by CGD 79–116, 60 FR 17157, Apr. 4,
1995]

§ 35.35–60 Transportation
of
other
cargo or stores on tank barges—B/
ALL.

Emergencies—TB/ALL.

In case of emergencies nothing in the
regulations in this subchapter shall be
construed as preventing the senior officer present from pursuing the most effective action in his judgment for rectifying the conditions causing the
emergency.

Subpart 35.40—Posting and
Marking Requirements—TB/ALL
§ 35.40–1 General
maker—TB/ALL.

alarm

Each general alarm contact maker
must be marked in accordance with requirements in subchapter J (Electrical
Engineering Regulations) of this chapter.
[CGD 74–125A, 47 FR 15231, Apr. 8, 1982]

§ 35.40–5

General alarm bells—TB/ALL.

General alarm bells must be marked
in accordance with requirements in
subchapter J (Electrical Engineering
Regulations) of this chapter.
[CGD 74–125A, 47 FR 15231, Apr. 8, 1982]

§ 35.40–6

Emergency lights—TB/ALL.

Emergency lights must be marked in
accordance with requirements in subchapter J (Electrical Engineering Regulations) of this chapter.
[CGD 74–125A, 47 FR 15231, Apr. 8, 1982]

§ 35.40–7 Carbon dioxide
agent alarms—T/ALL.

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Each carbon dioxide or clean agent
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§ 35.40–8

46 CFR Ch. I (10–1–14 Edition)

November 19, 1952, must be conspicuously
marked:
‘‘WHEN
ALARM
SOUNDS VACATE AT ONCE. [CARBON DIOXIDE/CLEAN AGENT—as appropriate] BEING RELEASED.’’

partments must be distinctly marked
to indicate the compartments or parts
of the vessel to which they lead.

[USCG–2006–24797, 77 FR 33874, June 7, 2012]

§ 35.40–15 Fire hose stations—TB/ALL.
At each fire hose valve there shall be
marked in not less than 2-inch red letters and figures: ‘‘FIRE STATION 1,’’ 2,
3, etc.

§ 35.40–8 Carbon
signs—T/ALL.

dioxide

warning

Each entrance to a space storing carbon dioxide cylinders, a space protected by carbon dioxide systems, or
any space into which carbon dioxide
might migrate must be conspicuously
marked as follows:
(a) Spaces storing carbon dioxide—
‘‘CARBON DIOXIDE GAS CAN CAUSE
INJURY OR DEATH. VENTILATE
THE AREA BEFORE ENTERING. A
HIGH CONCENTRATION CAN OCCUR
IN THIS AREA AND CAN CAUSE SUFFOCATION.’’.
(b) Spaces protected by carbon dioxide—‘‘CARBON DIOXIDE GAS CAN
CAUSE INJURY OR DEATH. WHEN
ALARM OPERATES OR WINTERGREEN SCENT IS DETECTED, DO
NOT ENTER UNTIL VENTILATED.
LOCK OUT SYSTEM WHEN SERVICING.’’ The reference to wintergreen
scent may be omitted for carbon dioxide systems not required to have odorizing units and not equipped with such
units.
(c) Spaces into which carbon dioxide
might migrate—‘‘CARBON DIOXIDE
GAS CAN CAUSE INJURY OR DEATH.
DISCHARGE INTO NEARBY SPACE
CAN COLLECT HERE. WHEN ALARM
OPERATES
OR
WINTERGREEN
SCENT IS DETECTED VACATE IMMEDIATELY.’’ The reference to wintergreen scent may be omitted for carbon dioxide systems not required to
have odorizing units and not equipped
with such units.
[USCG–2006–24797, 77 FR 33874, June 7, 2012]

§ 35.40–10 Steam, foam, carbon dioxide, or clean agent fire smothering
apparatus—TB/ALL.
Each steam, foam, carbon dioxide, or
clean agent fire fighting apparatus
must be marked ‘‘[CARBON DIOXIDE/
STEAM/FOAM/CLEAN AGENT—as appropriate] FIRE APPARATUS’’ in red
letters at least 2 inches high. Branch
pipe valves leading to the several com-

[USCG–2006–24797, 77 FR 33874, June 7, 2012]

§ 35.40–17 Foam
hose/monitor
stations—T/ALL.
(a) At each required foam hose/monitor valve there shall be marked in not
less than 2-inch red letters and figures:
‘‘FOAM STATION 1,’’ 2, 3, etc.
(b) [Reserved]
§ 35.40–18 Water spray systems—TB/
ALL.
(a) Water spray system apparatus
shall be marked: ‘‘WATER SPRAY
SYSTEM,’’ as appropriate, in not less
than 2-inch red letters.
(b) The control valve, and its control
if located remotely, shall be distinctly
marked to indicate the compartment
protected.
§ 35.40–20 Emergency equipment—TB/
ALL.
Each locker and space where emergency equipment is stowed must be
marked ‘‘EMERGENCY EQUIPMENT’’
or ‘‘SELF-CONTAINED BREATHING
APPARATUS’’, as appropriate.
[CGD 86–036, 57 FR 43824, Oct. 23, 1992]

§ 35.40–25 Fire extinguishers—TB/ALL.
Each fire extinguisher shall be
marked with a number and the location where stowed shall be marked in
corresponding numbers in at least 1⁄2
inch figures.
§ 35.40–30 Instructions for changing
steering gear—TB/ALL.
Instructions in at least 1⁄2 inch letters and figures shall be posted in the
steering engineroom, relating in order,
the different steps to be taken in
changing to the emergency steering
gear. Each clutch, gear wheel, lever,
valve or switch which is used during
the changeover shall be numbered or
lettered on a brass plate or painted so
that the markings can be recognized at

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Coast Guard, DHS

§ 36.01–5

a reasonable distance. The instructions
shall indicate each clutch or pin to be
‘‘in’’ or ‘‘out’’ and each valve or switch
which is to be ‘‘opened’’ or ‘‘closed’’ in
shifting to any means of steering for
which the vessel is equipped. Instructions shall be included to line up all
steering wheels and rudder amidship
before changing gears.

partment of Homeland Security Delegation
No. 0170.1.

§ 35.40–35

36.05–1 Installation of cargo tanks—TB/
ALL.
36.05–10 Protection of personnel—TB/ALL.

(a) The regulations in this part contain requirements for the transportation in bulk of materials considered
to be Grade E liquids when shipped in
molten form at elevated temperatures.
(b) The materials covered by this
part shall meet the applicable regulations of this subchapter, except that
materials having a flash point of 300 °F.
or above, shall be exempt from the requirements prescribed in the following
sections of this subchapter:
(1) Inspection prior to making repairs—§ 35.01–1(b).
(2) Watchman for a tank vessel—
§ 35.05–15.
(3) Warning sign at gangway—§ 35.30–
1(b).
(4) Cargo tank hatches, ullage holes
and Butterworth plates—§ 35.30–10.
(5) Men on duty—§ 35.35–1.
(6) Inspection prior to transfer of
cargo—§ 35.35–20.
(7) Approval to start transfer of
cargo—§ 35.35–25.
(8) ‘‘Declaration of inspection’’ for
tank ships—§ 35.35–30.
(9) Transportation of other cargo or
stores on tank barges—§ 35.35–60.
(c) The regulations governing the
transportation in the solid state of materials referred to in § 36.01–1(a) are
contained in part 148 of subchapter N
(Dangerous Cargoes) of this chapter.

Subpart 36.10—Piping, Valves, Fittings, and
Accessory Equipment

[CGFR 65–50, 30 FR 16716, Dec. 30, 1965, as
amended by CGD 97–057, 62 FR 51043, Sept. 30,
1997]

Rudder orders—TB/ALL.

At all steering stations, there shall
be installed a suitable notice on the
wheel or device or in such other position as to be directly in the helmsman’s line of vision, to indicate the direction in which the wheel or device
must be turned for ‘‘right rudder’’ or
‘‘left rudder.’’
§ 35.40–40 Marking and instructions
for fire and emergency equipment—
TB/ALL.
Lifesaving appliances, instructions to
passengers, and stowage locations for
all tank vessels must be in accordance
with subchapter W (Lifesaving Appliances and Arrangements) of this chapter.
[CGD 84–069, 61 FR 25287, May 20, 1996]

PART 36—ELEVATED TEMPERATURE
CARGOES
Subpart 36.01—General
Sec.
36.01–1
36.01–5

Scope of regulations—TB/ALL.
Certificate of inspection—TB/ALL.

Subpart 36.05—Cargo Tanks

36.10–1

Cargo pump relief valves—TB/ALL.

Flame screens—TB/ALL.
Ventilation of pumproom—TB/ALL.

Subpart 36.30—Periodic Inspections
36.30–1

Subpart 36.01—General
§ 36.01–1 Scope
ALL.

of

regulations—TB/

§ 36.01–5 Certificate of inspection—TB/
ALL.

Subpart 36.20—Vents and Ventilation
36.20–1
36.20–5

SOURCE: CGFR 65–50, 30 FR 16716, Dec. 30,
1965, unless otherwise noted.

Lagged tanks—TB/ALL.

AUTHORITY: 46 U.S.C. 3306, 3703; E.O. 12234,
45 FR 58801, 3 CFR, 1980 Comp., p. 277; De-

(a) The certificate of inspection shall
be endorsed for the carriage of elevated
temperature cargoes as follows: ‘‘Inspected and approved for the carriage
of Grade E combustible liquids when
transported in molten form at elevated
temperatures.’’
(b) [Reserved]

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§ 36.05–1

46 CFR Ch. I (10–1–14 Edition)

Subpart 36.05—Cargo Tanks
§ 36.05–1 Installation of cargo tanks—
TB/ALL.
(a) All cargo tanks carrying liquids
at elevated temperatures for the purpose of maintaining the material in the
molten form shall be installed with the
access openings located above the
weather deck.
(b) [Reserved]
§ 36.05–10 Protection
TB/ALL.

of

Subpart 36.30—Periodic
Inspections
§ 36.30–1 Lagged tanks—TB/ALL.
(a) Lagged tanks shall have part of
the lagging removed on the lower portion of the cargo tanks as directed by
the marine inspector, at least once
every eight years for external examination.
(b) [Reserved]

PART 38—LIQUEFIED FLAMMABLE
GASES

personnel—

(a) Decks, bulkheads, or other structures shall be insulated with an approved incombustible material, or
other suitable means of protection
shall be employed where practicable
and necessary for the protection of personnel.
(b) [Reserved]

Subpart 38.01—General
Sec.
38.01–1 Scope of regulations—TB/ALL.
38.01–2 Transportation of portable cylinders
or portable tanks containing or having
previously contained liquefied flammable
gases in dry cargo spaces—TB/ALL.
38.01–3 Incorporation by reference.
38.01–5 Certificate of inspection—TB/ALL.

Subpart 36.10—Piping, Valves,
Fittings, and Accessory Equipment
§ 36.10–1 Cargo pump relief valves—
TB/ALL.
(a) Cargo pump relief valves and pressure gages may be omitted, however, a
suitable device shall be fitted to stop
the pumping before the designed pressure of the piping is exceeded.
(b) [Reserved]

Subpart 36.20—Vents and
Ventilation
§ 36.20–1

Flame screens—TB/ALL.

of

38.05–1 Design and construction of vessels—
general—TB/ALL.
38.05–2 Design and construction of cargo
tanks—general—TB/ALL.
38.05–3 Design and construction of pressure
vessel type cargo tanks—TB/ALL.
38.05–4 Design and construction of nonpressure vessel type cargo tanks—TB/ALL.
38.05–5 Markings—TB/ALL.
38.05–10 Installation of cargo tanks—general—TB/ALL.
38.05–20 Insulation—TB/ALL.
38.05–25 Refrigerated systems—TB/ALL.

Subpart 38.10—Piping, Valves, Fittings, and
Accessory Equipment

(a) Flame screens may be omitted in
the vent lines on cargo tanks.
(b) [Reserved]
§ 36.20–5 Ventilation
TB/ALL.

Subpart 38.05—Design and Installation

pumproom—

(a) Where personnel are required to
enter pumprooms located below the
weather deck under normal circumstances of handling cargo, such
pumprooms shall be equipped with
power ventilation.
(b) [Reserved]

38.10–1 Valves, fittings, and accessories—
TB/ALL.
38.10–5 Filling and discharge pipes—TB/
ALL.
38.10–10 Cargo piping—TB/ALL.
38.10–15 Safety relief valves—TB/ALL.
38.10–20 Liquid level gaging devices—TB/
ALL.

Subpart 38.15—Special Requirements
38.15–1 Filling of tanks—TB/ALL.
38.15–5 Cargo hose—TB/ALL.
38.15–10 Leak detection systems—T/ALL.
38.15–15 Electrical installations—TB/ALL.
38.15–20 Remote shutdowns—TB/ALL.

Subpart 38.20—Venting and Ventilation
38.20–1

Venting—T/ALL.

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Coast Guard, DHS

§ 38.01–2

38.20–5 Venting—T/ALL.
38.20–10 Ventilation—T/ALL.

Subpart 38.25—Periodic Tests and
Inspections
38.25–1 Tests and inspections—TB/ALL.
38.25–3 Nondestructive testing—TB/ALL.
38.25–5 Removal of defective tanks—TB/
ALL.
38.25–10 Safety relief valves—TB/ALL.
AUTHORITY: 46 U.S.C. 2103, 3306, 3703; 49
U.S.C. 5101, 5106; E.O. 12234, 45 FR 58801, 3
CFR, 1980 Comp., p. 277; Department of
Homeland Security Delegation No. 0170.1.
SOURCE: CGFR 66–33, 31 FR 15269, Dec. 6,
1966, unless otherwise noted.

Subpart 38.01—General
§ 38.01–1 Scope of regulations—TB/
ALL.
(a) The regulations in this part contain requirements for the transportation of liquefied or compressed gases,
whose primary hazard is one of flammability.
(b) The transportation on deck of liquefied flammable gases in portable cylinders and tanks and the transportation of empty cylinders and portable
tanks previously used shall be in accordance with the requirements of 49
CFR parts 171–179. The transportation
of such containers under deck shall be
in accordance with the requirements of
§ 38.01–2.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGD 86–033, 53 FR 36024, Sept. 16,
1988]

§ 38.01–2 Transportation of portable
cylinders or portable tanks containing or having previously contained liquefied flammable gases in
dry cargo spaces—TB/ALL.
(a) DOT cylinders, DOT Specification
portable tanks or other approved portable tanks containing liquefied flammable gases may be transported under
deck, provided the following requirements are met:
(1) The cargo space shall be provided
with efficient means of ventilation, be
protected from artificial heat, and be
readily accessible from hatches.
(2) Containers shall be stored in such
a position that the safety relief device
is in communication with the vapor
space of the container. They shall be

properly stowed, dunnaged, and secured
to prevent movement in any direction.
(3) Unless a method acceptable to the
Commandant is used, the containers
shall not be overstowed in the same
dry cargo space with other liquefied
flammable gas containers, nor with
other cargo.
(4) The containers shall be suitably
protected against physical damage
from other cargo, ship’s stores, or
equipment in such spaces.
(5) Cylinders shall have their valves
protected at all times by one of the following methods:
(i) By metal caps securely attached
to the cylinders and of sufficient
strength to protect the valves from injury.
(ii) By having the valves recessed
into the cylinders or otherwise protected so that they will not be subject
to a blow if the cylinder is dropped on
a flat surface.
(6) Portable tanks shall have their
valves protected at all times by a housing in accordance with the requirements under which they were manufactured.
(7) Electrical circuits in the cargo
spaces must meet the hazardous area
requirements in subchapter J (Electrical Engineering Regulations) of this
chapter. If an electrical circuit does
not meet those requirements, it must
be deenergized by a positive means and
not reenergized until the cargo has
been removed and the space has been
tested and found free of flammable
vapor.
(8) During the stowage of portable
cylinders or portable tanks in a hold or
compartment that is not fitted with
electrical fixtures meeting the hazardous area requirements of subchapter
J (Electrical Engineering Regulations)
of this chapter, portable lights must
not be used within the space unless the
portable lights are explosion-proof.
Electrical connections for portable
lights must be made from outlets on
the weather deck. Hand flashlights
used in the stowage area must be explosion-proof.
(9) The following dangerous cargoes
shall not be stowed in the same hold or
compartment with liquefied flammable
gas containers:

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§ 38.01–3

46 CFR Ch. I (10–1–14 Edition)

(i) Division 1.1, 1.2, 1.3, or 1.4 (explosive) materials, as defined in 49 CFR
173.50.
(ii) Flammable solids.
(iii) Oxidizing materials.
(iv) Corrosive liquids.
(v) Poisonous articles.
(vi) Cotton and similar fibrous materials.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–32, 33 FR 5714, Apr. 12,
1968; CGD 74–125A, 47 FR 15231, Apr. 8, 1982;
CGD 92–050, 59 FR 39666, Aug. 5, 1994]

§ 38.01–3 Incorporation by reference.
(a) Certain standards and specifications are incorporated by reference
into this part with the approval of the
Director of the Federal Register in accordance with 5 U.S.C. 552(a). To enforce any edition other than the ones
listed in paragraph (b) of this section,
notice of change must be published in
the FEDERAL REGISTER and the material made available to the public. All
approved material is on file at the National Archives and Records Administration (NARA). For information on
the availability of this material at
NARA, call 202–741–6030, or go to: http://
www.archives.gov/federallregister/
codeloflfederallregulations/
ibrllocations.html. All material is
available from the sources indicated in
paragraph (b) of this section.
(b) The standards and specifications
approved for incorporation by reference in this part, and the sections affected, are:
American Society for Nondestructive Testing
(ASNT)
4153 Arlingate Road, Caller #28518, Columbus,
OH, 43228–0518
ASNT ‘‘Recommended Practice No.
SNT-TC-1A (1988), Personnel Qualification and Certification in Nondestructive Testing’’...............38.25–3(c)(2)
American Society of Mechanical Engineers
(ASME) International
Three Park Avenue, New York, NY 10016–5990
ASME Boiler and Pressure Vessel
Code Section V, Nondestructive
Examination (1986) .................38.25–3(a)(1)
American Society for Testing and Materials
(ASTM)
100 Barr Harbor Drive, West Conshohocken,
PA 19428–2959.
ASTM D 4986–98, Standard Test Meth-

od for Horizontal Burning Characteristics of Cellular Polymeric Materials............................................38.05–20
[CGD 85–061, 54 FR 50962, Dec. 11, 1989, as
amended by USCG-1999–6216, 64 FR 53224, Oct.
1, 1999; USCG-1999–5151, 64 FR 67177, Dec. 1,
1999]

§ 38.01–5 Certificate of inspection—TB/
ALL.
(a) The certificate of inspection shall
be endorsed for the carriage of liquefied flammable gases as follows:
Inspected and approved for the carriage of
liquefied flammable gases (1) at a pressure
not to exceed lll p.s.i., and (2) at temperatures not less than ll °F.

(b) Tanks approved to carry cargoes
at below ambient temperatures shall
have the applicable limiting temperatures indicated on the certificate.
Tanks designed to carry cargoes only
at ambient temperatures should have
the word ‘‘ambient’’ entered in these
spaces.

Subpart 38.05—Design and
Installation
§ 38.05–1 Design and construction of
vessels—general—TB/ALL.
(a) Vessels designed for the carriage
of liquefied gases shall comply with the
applicable requirements of this subchapter.
(b) Access and ventilation intakes to
the machinery, accommodation and
working spaces should be so arranged
as to prevent the flow of cargo vapor
from the weather deck into such
spaces. In this respect openings in the
forward or after ends of poops, forecastles, and deckhouses adjacent the
cargo area shall be at least 24 inches
above the cargo handling deck.
(c) Materials used in the fabrication
of cargo tanks and piping shall have
adequate notch toughness at the service temperature. Where a secondary
barrier is required, the material of that
barrier and of contiguous hull structure shall have sufficient notch toughness at the lowest temperature which
may result during the containment of
leakage cargo within the secondary

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Coast Guard, DHS

§ 38.05–3

barrier. Materials used in the fabrication of the cargo containment and handling system shall satisfy the requirements for toughness specified in subchapter F (Marine Engineering) of this
chapter.
(d) Cargo tank spaces are to be isolated from the remainder of the vessel
by cofferdams in accordance with
§ 32.60–10 of this subchapter. In a nonpressure vessel configuration, the void
between the primary and secondary
barriers shall not be acceptable as the
required cofferdam between the tank
spaces and the main machinery spaces.
(e) Compartments containing cargo
tanks or pipes shall be accessible from
the weather deck only. No openings
from these compartments to other
parts of the vessel are permitted.
(f) Barges utilized for the carriage of
liquefied gases shall be of Type II barge
hull as defined in § 32.63–5(b)(2) of this
subchapter. The Commandant may,
based on the properties of the liquefied
gas to be carried, require a Type I
barge hull, as defined in § 32.63–5(b)(1) of
this subchapter, to ensure the hull is
consistent with the degree and nature
of the hazard of the liquefied gas to be
carried.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–82, 33 FR 18806, Dec. 18,
1968; CGFR 68–65, 33 FR 19985, Dec. 28, 1968;
CGFR 70–10, 35 FR 3709, Feb. 25, 1970]

§ 38.05–2 Design and construction of
cargo tanks—general—TB/ALL.
(a) The maximum allowable temperature of the cargo is defined as the boiling temperature of the liquid at a pressure equal to the setting of the relief
valve.
(b) The service temperature is the
minimum temperature at which cargo
is loaded and/or transported in the
cargo tank. However, the service temperature shall in no case be taken higher than given by the following formula:
ts=tw¥0.25(tw¥tb)

(1)

where:
ts=Service temperature.
tw=Boiling temperature of gas at normal
working pressure of tank but not higher
than +32 °F.
tb=Boiling temperature of gas at atmospheric
pressure.

(c) Heat transmission studies, where
required, shall assume the minimum
ambient temperatures of 0 °F. still air
and 32 °F. still water, and maximum
ambient temperatures of 115 °F. still
air and 90 °F. still water.
(d) Cargo tanks in vessels in ocean;
Great Lakes; lakes, bays, and sounds;
or coastwise service shall be designed
to withstand, simultaneously, the following dynamic loadings:
(1) Rolling 30° each side (120°) in 10
seconds.
(2) Pitching 6° half amplitude (24°) in
7 seconds.
(3) Heaving L/80′ half amplitude (L/20′)
in 8 seconds.
(e) Cargo tanks on barges shall be designed in accordance with § 32.63–25 of
this subchapter.
(f) Each liquefied flammable gas tank
shall be provided with not less than a
15-inch by 23-inch or an 18-inch nominal diameter manhole fitted with a
cover located above the maximum liquid level and as close to the top of the
tank as possible. Where access trunks
are fitted to the tanks, the nominal diameter of the trunks shall be not less
than 30 inches.
(g) Cargo tanks vented above 10
pounds per square inch gage shall be of
the pressure vessel type.
§ 38.05–3 Design and construction of
pressure vessel type cargo tanks—
TB/ALL.
(a) Cargo tanks of pressure vessel
configuration (e.g. cylindrical, spherical, etc.) shall be designed, fabricated,
inspected, and tested in accordance
with the applicable requirements of
part 54 of subchapter F (Marine Engineering) of this chapter, except as otherwise provided for in this part.
(b) The requirements of this section
anticipate that cargo tanks constructed as pressure vessels will, by
themselves, constitute the cargo containment system and usually will not
require a secondary barrier.
(c) In the design of the tank, consideration shall be given to the possibility
of the tank being subjected to external
loads. Consideration shall also be given
to excessive loads that can be imposed
on the tanks by their support due to
static and dynamic forces under operating conditions or during testing. The

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§ 38.05–4

46 CFR Ch. I (10–1–14 Edition)

design shall show the manner in which
the tanks are to be installed, supported, and secured, and shall be approved prior to tank installation.
(d) Tanks with a service temperature
of minus 20 °F. or lower and fabricated
of ferritic materials shall be stress relieved.
(e) Unlagged cargo tanks, where the
cargo is transported, at or near ambient temperatures, shall be designed for
the vapor pressure of the gas at 115 °F.
The design shall also be based on the
minimum internal pressure (maximum
vacuum), plus the maximum external
static head to which the tank may be
subjected. Whenever surrounding cargo
is at a greater temperature than the
maximum allowable temperature of
the liquefied flammable gas tanks, the
liquefied flammable gas cargo is to be
such that the design pressure of the
liquefied flammable gas tank is not exceeded.
(f) Where cargo tanks, in which the
cargo is transported at or near ambient
temperature, are lagged with an insulation material of a thickness to provide
a thermal conductance of not more
than 0.075 B.t.u. per square foot per degree Fahrenheit differential in temperature per hour, the tanks shall be
designed for a pressure of not less than
the vapor pressure of the gas at 105 °F.
The insulation material shall conform
to the requirements of § 38.05–20. The
design shall also be based on the minimum internal pressure (maximum
vacuum) plus the maximum external
static head to which the tank may be
subjected.
(g) Cargo tanks in which the temperature is maintained below the normal atmospheric temperature by refrigeration or other acceptable means
shall be designed for a pressure of not
less than 110 percent of the vapor pressure corresponding to the temperature
of the liquid at which the system is
maintained, or the pressure corresponding to the greatest dynamic
and static loads expected to be encountered either in service or during testing. For mechanically stress relieved
cargo tanks, additional factors relating
design pressure and maximum allowable pressure shall be as specified by
the Commandant. The material of the
tank shall satisfy the requirements of

subchapter F (Marine Engineering) of
this chapter for the service temperature, and this temperature shall be permanently marked on the tank as prescribed in § 38.05–5.
(h) Where applicable, the design shall
investigate the thermal stresses induced in the cargo tank at the service
temperature.
(i) The shell and head thickness of
liquefied gas cargo tanks shall not be
less than five-sixteenths inch.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–82, 33 FR 18806, Dec. 18,
1968]

§ 38.05–4 Design and construction of
nonpressure vessel type cargo
tanks—TB/ALL.
(a) The requirements in this section
anticipate a cargo containment system
consisting of a primary tank which is
structurally self-supporting and, where
required, a secondary barrier. Other
vessel or cargo tank configurations,
such as membrane type liners externally supported, will be considered
upon submission of substantiating
data, and based upon such additional
tests as the Commandant may direct.
(b) A secondary barrier is an arrangement or structure designed to contain
the cargo temporarily if leakage develops in the primary container. A secondary barrier shall be provided where
leakage from the primary container
may cause lowering of the temperature
of the ship’s structure to an unsafe
level. The secondary barrier shall be
constructed of material suitable to
contain the cargo at the service temperature.
(c) The design of the cargo containment systems shall be such that under
normal service conditions, or upon failure of the primary tank, the hull structure shall not be cooled down to a temperature which is unsafe for the materials involved. Structural members not
suitable for the service temperatures of
the cargo shall be protected by a secondary barrier consisting of suitable
structural containment together with
necessary associated insulation. Heat
transmission studies and tests may be
required to demonstrate that the arrangement is feasible and that the final
material temperatures are acceptable.

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Coast Guard, DHS

§ 38.05–10

(d) The design and construction of
the cargo tanks shall be at least equivalent to the standards established by
the American Bureau of Shipping or
other recognized classification society.
For special tanks, or designs not contemplated by standards of the classification society, a detailed analysis of
the entire tank, or designated parts
thereof, shall be made and submitted
to the Commandant for approval.
(e) The cargo tank shall be designed
for a head of cargo at least equal to the
highest level the liquid cargo may attain plus the maximum venting pressure. In no case shall a head of cargo
less than 4 feet above the cargo hatch
or expansion trunk be used.
(f) The design shall investigate the
thermal stresses induced in the cargo
tank during loading. Where necessary,
devices for spray loading or other
methods of precooling or cooling during loading shall be included in the design.
(g) All weld intersections or crossings
in joints of primary tank shells shall
be radiographed for a distance of 10
thicknesses from the intersection. All
other welding in the primary tank and
in the secondary barrier shall be spot
radiographed in accordance with the
requirements of part 54 of subchapter F
(Marine Engineering) of this chapter.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–82, 33 FR 18807, Dec. 18,
1968]

§ 38.05–5

Markings—TB/ALL.

(a)(1) Upon satisfactory completion
of tests and inspection, pressure vessel
and nonpressure vessel type cargo
tanks, shall have markings as required
by § 54.10–20 of subchapter F (Marine
Engineering) of this chapter except
that for nonpressure vessel type tanks,
the Coast Guard number and pressure
vessel class shall be omitted.
(2) Hydrostatic test for pressure vessel type tanks shall be that specified in
§ 38.25–1(b). In the case of nonpressure
vessel type tanks, the hydrostatic test
pressure shall mean the pressure specified in § 38.25–1(d), while the maximum
allowable pressure shall mean the maximum venting pressure as used in
§ 38.05–4(e). Where it is not feasible to
attach the nameplate to the tank, it

shall be conspicuously displayed nearby.
(b) All tank inlet and outlet connections, except safety relief valves, liquid
level gaging devices, and pressure
gages, shall be labeled to designate
whether they terminate in the vapor or
liquid space. Labels of corrosion-resistant material may be attached to
valves.
(c) All tank markings shall be permanently and legibly stamped in a readily
visible position, and shall not be obscured by painting. If the tanks are
lagged, the markings attached to the
tank proper shall be duplicated on a
corrosion-resistant plate secured to the
outside jacket of the lagging.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–82, 33 FR 18807, Dec. 18,
1968]

§ 38.05–10 Installation of cargo tanks—
general—TB/ALL.
(a)(1) Cargo tanks shall be supported
on foundations of steel or other suitable material and securely anchored in
place to prevent the tanks from shifting when subjected to external forces.
Each tank shall be so supported as to
prevent the concentration of excessive
loads on the supporting portions of the
shell or head as prescribed under
§ 38.05–2(d).
(2) Cargo tanks installed in barges
shall comply with the requirements of
§ 32.63–25 of this subchapter.
(b) Foundations, and stays where required, shall be designed for support
and constraint of the weight of the full
tank, and the dynamic loads imposed
thereon. Thermal movement shall also
be considered.
(c) Foundations and stays which may
be exposed to the cargo shall be suitable for the temperatures involved and
be impervious to the cargo.
(d) The design of the foundations and
stays shall consider the resonance of
the cargo tank, or parts thereof, and
the vibratory forces, found in the tank
vessel. If necessary, effective damping
arrangements shall be provided.
(e) Independent containment systems
shall be so arranged as to provide a
minimum clearance of not less than 24
inches from the vessel’s side and not
less than 15 inches from the vessel’s
bottom to provide access for inspection

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§ 38.05–20

46 CFR Ch. I (10–1–14 Edition)

of the hull. Clearances for collision
protection, where required by other
parts of the regulations in this subchapter, may increase the clearances
specified here.
(1) For pressure vessel type tanks the
distance between adjacent tanks and
between tanks and vessel’s structure
shall be adequate to permit access for
inspection and maintenance of all tank
surfaces and hull structure as approved
by the Commandant. Alternate provisions may be made for inspection and
maintenance of the vessel’s structure
and tanks by moving such tanks or by
providing equivalent acceptable means
for remote inspection.
(2) For nonpressure vessel type containment systems, access shall be arranged to permit inspection of one side
each of the primary tank and secondary barrier, under normal shipyard
conditions.
Containment
systems
which, because of their peculiar design,
cannot be visually inspected to this degree, may be specially considered provided an equivalent degree of safety is
attained.
(f) Cargo tanks may be installed on
deck, under deck, or with the tanks protruding through the deck. All tanks
shall be installed with the manhole
openings located in the open above the
weather deck. Provided an equivalent
degree of safety is attained, the Commandant may approve cargo tanks installed with manhole openings located
below the weather deck.
(g) For pressure vessel type cargo
tanks, the following conditions apply:
(1) Liquefied flammable gas cargo
tanks may be located in cargo tanks or
in spaces which meet the requirements
for cofferdams as defined in § 30.10–13 of
this subchapter. When liquefied flammable gas cargo tanks are installed in
cargo tanks, such cargo tanks may be
used simultaneously or separately for
the carriage of flammable or combustible liquids up to and including the
grade for which the cargo tanks are
otherwise certified in accordance with
the requirements of this subchapter.
(2) Where the liquefied flammable gas
tanks are installed in cargo tanks and
a portion of the liquefied flammable
gas tanks extend above the weather
deck, the penetration shall be made
gastight and watertight, and shall be

such as to provide full compliance with
the structural requirements including
testing for the hull and integral tanks.
In the application of the requirements
for the hydrostatic test of the cargo
tanks, the hydrostatic test shall in no
case be less severe than the worst anticipated service condition of the cargo
loading. In the design and testing of
independent cargo tanks and integral
cargo tanks consideration shall be
given to the possibility of the independent tanks being subjected to external loads.
(3) Where the liquefied flammable gas
tanks are installed in nontank hull
spaces and a portion of the tank extends above the weather deck, provision shall be made to maintain the
weathertightness of the deck, except
that the weathertightness of the upper
deck need not be maintained on:
(i) Vessels operating on restricted
routes which are sufficiently protected;
or,
(ii) Open hopper type barges of acceptable design.
(h) No strength welding employed in
the attachment of supports, lugs, fittings, etc., shall be done on tanks that
require and have been stress relieved,
unless authorized by the Commandant.
§ 38.05–20 Insulation—TB/ALL.
(a) Where used, tank insulation shall
satisfy the following requirements for
combustibility, installation, and arrangement:
(1) Insulation in a location exposed to
possible high temperature or source of
ignition shall be either:
(i) Incombustible, complying with
the requirements of subpart 164.009 of
subchapter Q (Specifications) of this
chapter; or,
(ii) Self-extinguishing, as determined
by ASTM D 4986, ‘‘Standard Test Method for Horizontal Burning Characteristics of Cellular Polymeric Materials,’’
(incorporated by reference, see § 38.01–3)
and covered by a suitable steel cover.
(2) Insulation in a location protected
against possible ignition by enclosure
in a tight steel envelope in which inert
conditions are maintained need satisfy
no requirement for combustibility except chemical stability.
(3) Insulation in a location protected
against possible high temperature or

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Coast Guard, DHS

§ 38.10–1

source of ignition by continuous surrounding structural voids or ballast
tanks need satisfy no requirement for
combustibility except chemical stability.
(b) All insulation shall be of a vaporproof construction, or have a vaporproof coating of a fire-retardant material acceptable to the Commandant.
Unless the vapor barrier is inherently
weather resistant, tanks exposed to the
weather shall be fitted with a removable sheet metal jacket of not less than
0.083-inch thick over the vapor-proof
coating and flashed around all openings
so as to be weathertight. Weather resistant coatings shall have sheet metal
over areas subject to mechanical damage.
(c) The insulation shall be adequately
protected in areas of probable mechanical damage.
(d) Insulation which forms an integral part of the secondary barrier shall
meet the following additional requirements:
(1) When the secondary barrier is
called upon to contain the cargo, insulating material which is contacted
shall not be affected by the cargo.
Samples of the insulating material
shall be tested in the cargo for solubility, absorption and shrinkage. The
samples shall be checked for the above
effects at intervals not exceeding 1
week, for a total test period of 6 weeks.
(2) Any adhesives, sealers, coatings,
or vapor barrier compounds used in
conjunction with the insulating material shall be similarly tested to insure
suitable cargo resistive properties.
(3) The insulation shall have sufficient mechanical strength for the proposed design. Additionally, the thermal
expansion of the insulation relative to
the material to which it is affixed shall
be considered in the design.
(e) The insulation for the piping systems shall be at least of the ‘‘self-extinguishing’’ type described in paragraph (a) of this section, and comply
with the requirements contained in
paragraphs (b) and (c) of this section.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by USCG-1999–5151, 64 FR 67177, Dec.
1, 1999]

§ 38.05–25
ALL.

Refrigerated

(a) When a liquefied flammable gas is
carried below atmospheric temperature
under the requirements of § 38.05–3(f) or
§ 38.05–4, maintenance of the tank pressure below the maximum allowable
pressure shall be provided by one or
more of the following means:
(1) A refrigeration or liquefication
system which regulates the pressure in
the tanks. A standby compressor or
equivalent equipment, of a capacity
equal to one of the working units shall
be provided.
(2) A system whereby the vapors are
utilized as fuel for shipboard use.
(3) A system allowing the liquefied
flammable gas to warm up and increase
in pressure. The insulation and tank
design pressure shall be adequate to
provide for a suitable margin for the
operating time and temperatures involved.
(4) Other systems acceptable to the
Commandant.
(b) A system whereby the vapors are
vented to the atmosphere at sea only
may be employed in conjunction with
paragraph (a)(1) of this section. The
pressure control valves shall be independent of the safety relief valves. See
§ 38.20–1(j).

Subpart 38.10—Piping, Valves,
Fittings, and Accessory Equipment
§ 38.10–1 Valves, fittings, and accessories—TB/ALL.
(a) All valves, flanges, fittings, and
accessory equipment shall be of a type
suitable for use with liquefied flammable gases, and shall be made of steel
or grade A malleable iron, acceptable
for the service temperature and pressure according to the requirements of
part 56 of subchapter F (Marine Engineering) of this chapter. Other materials may be specially considered and
approved by the Commandant.
(b) All valves, flanges, fittings, and
accessory equipment shall have a pressure rating at operating temperatures
not less than the maximum allowable
pressure to which they may be subjected. Piping which is not protected
by a relief valve or which can be isolated from its relief valve by other

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46 CFR Ch. I (10–1–14 Edition)

valves shall be designed for the greatest of the cargo vapor pressure at 115
°F., or the maximum allowable pressure of the cargo tank, or the requirements of § 38.10–10(a). Cargo liquid piping which may be subject to liquid full
conditions shall be fitted with relief
valves. The escape from piping systems
relief valves shall be piped to a venting
system or to a suitable vapor recovery
system. Provision shall be made for the
proper venting of all valves, fittings,
etc., in which pressure buildup may
occur, especially in refrigerated systems, because of an increase in product
temperature.
(c) Welded connections shall be used
wherever possible with the number of
flanged joints kept to the minimum
necessary for assembly and cleaning.
Sockets in sizes 3 inches and smaller
and slipon flanges in sizes 4 inches and
smaller may be used. Threaded joints
may be used in sizes of 1 inch and
smaller. Where threaded joints are
used, they shall be visible and accessible for inspection under all service
conditions, and limited to instrument
and control lines properly valved from
the main lines. Where threaded joints
are sealed by brazing or welding, they
need not be exposed.
(d) Valve seat material, packing, gaskets, etc., shall be resistant to the action of the liquefied flammable gas. All
flange and manhole cover gaskets shall
be compressed asbestos, spiral-wound
metal asbestos, metal jacketed asbestos, solid aluminum, corrugated steel,
solid steel, or iron, or other materials
with equal or better resistance to fire
exposure.
(e) Provisions shall be made by the
use of offsets, loops, bands, expansion
joints, etc., to protect the piping and
tank from excessive stress due to thermal movement and/or movements of
the tank and hull structure. Expansion
joints shall be held to a minimum and
where used shall be of the bellows type
and subject to special approval by the
Commandant.
(f) Low temperature piping shall be
thermally isolated from the hull structure. Arrangements should provide for
the protection of the hull structure
from leaks in way of pumps, flanges,
joints, etc.

(g) Each tank shall be provided with
the necessary fill and discharge liquid
and vapor shutoff valves, safety relief
valve connections, refrigeration connections where necessary, liquid level
gaging devices, thermometer well and
pressure gage, and shall be provided
with suitable access for convenient operation. Piping shall enter the cargo
tanks above weather deck and as close
to the top of the tank or dome as possible, except as otherwise permitted in
this section. Connections to the tanks
shall be protected against mechanical
damage and tampering. No underdeck
cargo piping shall be installed between
the outboard side of the cargo containment system and the shell of the vessel, unless provision is made to maintain the minimum inspection and collision protection clearances of § 38.05–
10(e) between the piping and the shell.
Other openings in the tanks, except as
specifically permitted by the Commandant, are prohibited.
(h) Cargo loading and discharge piping may be connected to the tanks
below the weather deck or below the
liquid level subject to approval by the
Commandant, provided:
(1) A remotely controlled quick-closing shutoff valve is flanged to the tank
outlet connection. The control mechanism for this valve shall meet the requirements of § 38.10–5.
(2) The piping which is below the
weather deck or liquid level shall be
joined by welding except for a flanged
connection to the quick-closing shutoff
valve and a flanged connection to the
cargo pump.
(3) The design and arrangement of
this piping, including the flange bolting shall be such that excessive
stresses will not be transmitted to the
cargo tank outlet connection or the
quick-closing valve, even in the event
of abnormal displacement of the piping.
(4) Except for those vessels, the design of which permits the exclusion of
a weathertight deck over the tanks,
the space in which such piping is located shall be accessible only from the
weather deck and shall be vented to a
safe location above the weather deck.
(i) All connections to tanks, except
safety relief valves and liquid level
gaging devices, shall have manually

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Coast Guard, DHS

§ 38.10–1

operated shutoff valves located as close
to the tank as possible. In addition, all
liquid and vapor connections on pressure vessel type tanks except safety relief valves, liquid level gaging devices,
and filling and discharge lines, shall be
equipped with either an automatic excess flow valve or a remotely controlled quick-closing shutoff valve of
the fail closed type. These valves, except when necessary for the operation
of the system, shall remain closed. For
pressure vessel type tanks operating at
low pressure and with service temperature near the cargo atmospheric boiling point, the Commandant may approve individual installations where
the liquid and vapor connections normally requiring automatic excess flow
valves or remotely controlled quickclosing shutoff valves are fitted with
manually operated shutoff valves only.
(j) The control system for quick-closing shutoff valves shall be provided
with a remote control in at least two
locations and be of a type acceptable to
the Commandant. The control system
shall also be provided with a fusible
element designed to melt between 208
°F. and 220 °F., which will cause the
quick-closing shutoff valves to close in
case of fire. The quick-closing shutoff
valves shall be capable of local manual
operation.
(k) Excess flow valves, where required by this subchapter, shall close
automatically at the rated flow of
vapor or liquid as specified by the manufacturer. The piping, including valves,
fittings, and appurtenances protected
by an excess flow valve, shall have a
greater capacity than the rated flow of
the excess flow valve.
(l) Liquid level gaging devices which
are so constructed that outward flow of
tank contents shall not exceed that
passed by a No. 54 drill size (0.055-inch
diameter)
opening,
need
not
be
equipped with excess flow valves.
(m) Pressure gage connections need
not be equipped with excess flow valves
if the openings are not larger than No.
54 drill size (0.055-inch diameter).
(n) Excess flow valves may be designed with a bypass not to exceed a
No. 60 drill size (0.040-inch diameter)
opening to allow equalization of pressure.

(o) Suitable valves shall be installed
on the cargo headers to relieve the
pressure on the liquid and vapor lines
to a safe location prior to disconnecting shore lines.
(p) A pressure gage shall be located
at the highest practicable point. A
thermometer well where installed on
the tank proper shall be attached to
the tank by welding.
(q) For nonpressure vessel type
tanks, the following additional fittings
are required:
(1) A liquid level gaging device shall
be provided to determine the level of
the liquid cargo without opening the
tank. The gage shall be readable from
the open deck, or from a control room
or station when the loading or discharging is controlled from such a
room or station. Tables shall be readily
available for direct determination of
volume of liquid in the tanks, with necessary corrections for trim, temperature, and density.
(2) An independent high level alarm
shall be provided for each tank. The
alarm indication shall register at the
station where loading is controlled.
(3) Each tank shall be provided with
remote reading temperature sensors located near both the cargo liquid level
and the bottom of the tank. The temperature shall be read at the control
station for loading and unloading
cargo, if provided, otherwise near the
cargo control valves.
(4) Each tank shall be fitted with a
pressure and a vacuum gage which
shall be read at the control station for
loading and unloading cargo, is provided, otherwise near the cargo control
valves. In addition, the liquid loading
and discharge headers at the ship’s
shore connection station shall be fitted
with pressure gages.
(r) Spaces surrounding cargo tanks
shall be provided with suitable means
for pumping out.
(1) Where pressure vessel type tanks
are installed or in other cases where no
secondary containment is required,
this may consist of a bilge system independent of the bilge system for the rest
of the vessel, and having no pipe connections between the cargo tank spaces
and the engineroom or boilerroom, except that educators may be supplied
from engineroom pumps.

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§ 38.10–5

46 CFR Ch. I (10–1–14 Edition)

(2) Secondary containment spaces of
structurally self-supporting tanks shall
be provided with suitable means for
pumping out leaked cargo. These
should be arranged so as to provide the
following alternatives:
(i) Return of the cargo to the same
primary tank or other tank.
(ii) Pumping the cargo off the ship either in port through a regular shore
unloading connection or at sea overboard in a safe manner.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–82, 33 FR 18807, Dec. 18,
1968]

§ 38.10–5 Filling and discharge pipes—
TB/ALL.
(a) Filling and discharge connections
shall be provided with the manually
operated valve required by § 38.10–1(i)
and with a positive acting remote controlled quick-closing valve. The remote
controlled quick-closing valve shall
satisfy the requirements of § 38.10–1(j).
(b) For pressure vessel type tanks the
remote controlled quick-closing valves
shall be located on the inside of the
tank or on the outside where the piping
enters the tank. For pressure vessel
type tanks operating at low pressure
and with service temperature near the
cargo atmospheric boiling point, the
Commandant may approve individual
installations where these valves are located at the loading and discharge
headers.
(c) For nonpressure vessel type tanks
the remote controlled quick-closing
valves may be located at the loading
and discharge headers.
§ 38.10–10 Cargo piping—TB/ALL.
(a) The piping shall be designed for a
working pressure of not less than the
maximum pressure to which it may be
subjected but in no case less than the
design pressure of the cargo tanks. In
the case of piping on the discharge side
of the liquid pumps or vapor compressors, the design pressure shall not be
less than the pump or compressor discharge relief valve setting; or, provided
the piping is not protected by relief
valves, the design pressure shall not be
less than the total discharge head of
the pump or compressor.
(b) Piping subject to tank pressure
shall be seamless drawn steel or elec-

tric resistance welded steel. Pipe used
in refrigerated tank systems shall be of
a material which is suitable for the
minimum service temperature to
which it may be subjected, according
to the requirements of part 56 of subchapter F (Marine Engineering) of this
chapter.
(c) Piping shall be provided with adequate support to take the weight of the
piping off valves and fittings and to
prevent
excessive
vibration
and
stresses on tank connections.
(d) For nonpressure vessel type
tanks, the cargo handling arrangements and piping shall provide for
emptying of a damaged tank, including
cargo contained by a secondary barrier.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–82, 33 FR 18807, Dec. 18,
1968]

§ 38.10–15 Safety
relief
valves—TB/
ALL.
(a) Each tank shall be fitted with or
(subject to approval by the Commandant) connected to one or more
safety relief valves designed, constructed and flow tested for capacity in
conformance with subpart 162.017 or
162.018 of subchapter Q (Specifications)
of this chapter.
(b) Safety relief valves conforming to
subpart 162.017 of subchapter Q (Specifications) of this chapter may be used
on tanks for a maximum pressure of 10
pounds per square inch gage. Safety relief valves conforming to subpart
162.018 of subchapter Q (Specifications)
of this chapter may be used for any
pressure.
(c) The safety relief valves shall have
a combined relieving capacity to discharge the greater of the following
with not more than 20 percent rise in
pressure (in the tank) above the maximum allowable pressure:
(1) The vapors evaporated by an ambient air temperature of 115 °F. plus
the maximum flow rate of the cargo
filling pipes or,
(2) The vapors generated under fire
exposure computed using the formulas
of § 54.15–25(c) of subchapter F (Marine
Engineering) of this chapter.
(d) The safety relief valves shall meet
the arrangement and inspection requirements of § 54.15–25 of subchapter F
(Marine Engineering) of this chapter.

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Coast Guard, DHS

§ 38.15–1

(e) Means shall be provided to protect
nonpressure vessel tanks from excessive external pressure.
(f) Void spaces between the primary
and secondary barriers of nonpressure
vessel type tanks shall be protected by
relief devices. The relief setting shall
not be higher than the void test pressure, and shall not exceed 90 percent of
the setting of the safety relief valve
protecting the primary tank.
[CGFR 68–82, 33 FR 18807, Dec. 18, 1968, as
amended by USCG–2014–0688, 79 FR 58280,
Sept. 29, 2014]

§ 38.10–20 Liquid level gaging devices—TB/ALL.
(a) Each tank shall be fitted with a
liquid level gaging device of approved
design to indicate the maximum level
to which the tank may be filled with
liquid:
(1) Between ¥20 °F. and 130 °F. for
unrefrigerated service; or,
(2) Within the operating temperature
range for tanks operating below atmospheric temperature.
(b) Liquid level gaging devices may
be of the following types: Rotary tube,
slip tube, magnetic, automatic float, or
similar types approved by the Commandant. Except as otherwise provided
in this section, fixed tube devices are
not acceptable as the primary gaging
device.
(c) All gaging devices shall be arranged so that the maximum liquid
level for product being carried, to
which the tank may be filled is readily
determinable. The maximum gallonage
capacity as required by § 38.15–1 shall
be:
(1) Marked on the tank system nameplate or gaging device; or,
(2) Shown in the ullage tables.
(d) Gaging devices that require bleeding of the product to the atmosphere,
such as the rotary tube, fixed tube, and
slip tube, shall be so designed that the
bleed valve maximum opening is not
larger than a No. 54 drill size (0.055inch diameter), unless provided with an
excess flow valve.
(e) For pressure vessel type tanks
each automatic float, continuous reading tape or similar type gage not
mounted directly on the tank or dome
shall be fitted with a shutoff device located as close to the tank as prac-

ticable. When an automatic float
gaging device, which gages the entire
height of the tank is used, a fixed tube
gage set in the range of 85 percent to 90
percent of the water capacity of the
tank shall be provided in addition as a
means of checking the accuracy of the
automatic float, gage, or other alternate means acceptable to the Commandant may be used.
(f) A gaging device shall be designed
for a pressure at least equal to the
maximum allowable pressure of the
tank on which it is installed.
(g) Gage glasses of the columnar type
are prohibited.
(h) Flat sight glasses may be used in
the design of automatic float continuous reading tape gages: Provided, That
such glasses shall be made of high
strength material suitable for the operating temperatures of not less than
one-half inch in thickness and adequately protected by a metal cover.

Subpart 38.15—Special
Requirements
§ 38.15–1

Filling of tanks—TB/ALL.

(a) Refrigerated and semirefrigerated
tanks shall be filled so that there is an
outage of at least 2 percent of the volume of the tank at the temperature
corresponding to the vapor pressure of
the cargo at the safety relief valve setting. A reduction in the required outage may be permitted by the Commandant when warranted by special design considerations. Normally then,
the maximum volume to which a tank
may be loaded is:
VL=0.98dr V/dL
where:
VL=maximum volume to which tank may be
loaded.
V=volume of tank.
dr=density of cargo at the temperature required for a cargo vapor pressure equal
to the relief valve setting.
dL=density of cargo at the loading temperature and pressure.

(b) Nonrefrigerated tanks shall be
filled so that their filling densities
shall not exceed the ratios indicated in
table 38.15–1(b).
(c) The ‘‘filling density’’ is defined as
the percent ratio of the weight of the

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§ 38.15–5

46 CFR Ch. I (10–1–14 Edition)

gas in a tank to the weight of water
the tank will hold at 60 °F.
TABLE 38.15–1(b)—MAXIMUM PERMISSIBLE
FILLING DENSITIES FOR TANKS OPERATING AT
OR NEAR AMBIENT TEMPERATURE
Maximum permitted filling density
Specific
gravity
at 60 °F.

Unlagged tanks—water capacity
1,200 gal. and
under

0.473–0.480
0.481–0.488
0.489–0.495
0.496–0.503
0.504–0.510
0.511–0.519
0.520–0.527
0.528–0.536
0.537–0.544
0.545–0.552
0.553–0.560
0.561–0.568
0.569–0.576
0.577–0.584
0.585–0.592
0.593–0.600
0.601–0.608
0.609–0.617
0.618–0.626
0.627–0.634

Over 1,200
gal.

38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

Lagged
tanks—all
capacities
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61

NOTE: Increase in filling densities to provide for seasonal
changes may be considered by the Commandant upon presentation of factual evidence that safe operation can be
effected.

§ 38.15–5 Cargo hose—TB/ALL.
(a) When the liquid and vapor line
hoses used for loading and discharging
the cargo are carried on board the vessel, they shall be of flexible metal and
fabricated of seamless steel pipe and
flexible joints of steel or bronze, or of
other suitable material resistant to the
action of the cargo. Hose used in refrigerated systems shall be suitable for the
minimum temperature to which it may
be subjected and shall be acceptable to
the Commandant.
(b) Hose subject to tank pressure, or
the discharge pressure of pumps or
vapor compressors, shall be designed
for a bursting pressure of not less than
five times the maximum safety relief
valve setting of the tank, pump, or
compressor.
(c) Before being placed in service
each new cargo hose, with all necessary
fittings
attached,
shall
be
hydrostatically tested by its manufacturer to a pressure not less than twice
its maximum working pressure nor
more than two-fifth its bursting pressure. The hose shall be marked with its

maximum working pressure, and if
used in refrigerated service, its minimum temperature.
§ 38.15–10
ALL.

Leak detection systems—T/

(a) A detection system shall be permanently installed to sense cargo
leaks. The detectors shall be located
within the space so as to permit the
sensing of an initial leak and prevent
an undetected gas accumulation. The
sensitivity shall be in accordance with
paragraph (b) of this section. The detectors shall be fitted in the following
compartments:
(1) Between the primary and secondary barriers for nonpressure vessel
type tanks.
(2) Cargo handling rooms and spaces
containing cargo piping or cargo handling systems.
(3) All enclosed spaces, except tanks
and cofferdams, which are separated
from the cargo tanks by only the secondary barrier.
(4) Other spaces where gas concentrations might be expected.
(5) Cargo holds, containing pressure
vessel type tanks and no cargo piping,
are exempt from the requirements of
this paragraph.
(b) The indicating instruments for
the detection system shall be located
on the bridge or at the cargo control
station. An audio and visual warning
shall be given before any gas concentration reaches 30 percent of the
lower explosive limit. The alarm shall
indicate both on the bridge and at the
cargo control station. Sampling of each
detector shall be at least once every
half hour.
(c) Means shall be provided to measure the full range of cargo gas concentration in the spaces.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–65, 33 FR 19985, Dec. 28,
1968]

§ 38.15–15
ALL.

Electrical installations—TB/

(a) All electrical installations shall
comply with the requirements contained in this subchapter and in subchapter J (Electrical Engineering) of
this chapter for tank vessels, except as
otherwise specified in this part.

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Coast Guard, DHS

§ 38.20–1

(b) Spaces containing cargo pumps,
compressors, and piping are considered
as equivalent to a tank vessel pumproom, and no electrical devices, except
Coast Guard approved intrinsically safe
devices, shall be installed in these
spaces. Electric motors shall be segregated from these spaces by a gastight
bulkhead. Electric lighting of the explosion-proof type may be installed in
these spaces provided all switching is
done from outside the space.
(c) All cargo tanks, piping, valves,
etc., shall be effectively grounded to
the vessel’s hull. Tanks with an insulated inner shell (primary barrier)
shall have an effective grounding bond
to the outer shell (secondary barrier)
or to the vessel’s hull.
(d) Electric submerged motor cargo
pumps may be used, when in compliance with the following requirements
and subject to approval by the Commandant.
(1) Design details of the submerged
motor pump, with an evaluation of the
cooling efficiency of the product being
pumped, shall be submitted.
(2) Provisions shall be made to exclude air from the tanks containing
cargo in either vapor or liquid phase.
The pump motor shall be deenergized
when this condition is not satisfied.
(3) A liquid level sensing device shall
automatically shut down the motor
and sound an alarm at a predetermined
low liquid level. The alarm location
may be the station from which cargo
handling is controlled or such other location outside the cargo area as is acceptable to the Commandant.
(4) Details of the power cable, tank
penetrations and pump connections
shall be submitted.
(5) An auxiliary means of emptying
the cargo tanks shall be provided in accordance with § 38.10–10(d).
(6)
Means
for
positively
disconnecting the power supply between
the switchboard and the pump power
panel shall be provided, i.e., disconnect
links, lockable breakers, etc.
(7) All materials used in the fabrication of the submerged motor cargo
pumps shall be suitable for use with
the liquid cargo at the design pressures
and temperatures.

§ 38.15–20 Remote
shutdowns—TB/
ALL.
(a) All machinery associated with
cargo loading, unloading, or cooling
shall be capable of being shut down
from a remote location. This location
may be the station from which the
cargo handling is controlled or such
other location outside the cargo area
as is acceptable to the Commandant.
(b) [Reserved]

Subpart 38.20—Venting and
Ventilation
§ 38.20–1 Venting—T/ALL.
(a) Each safety relief valve installed
on a cargo tank shall be connected to a
branch vent of a venting system which
shall be constructed so that the discharge of gas will be directed vertically
upward to a point which shall extend
to a height above the weather deck
equal to at least one-third the beam of
the vessel and to a minimum of at least
10 feet, and shall terminate at a comparable distance from any other living
or working space, ventilator inlet, or
source of vapor ignition. When special
conditions will prevent the vent line
header outlets being permanently installed at a height above the deck of
one-third the beam of the vessel, then
an adjustable system shall be provided
which, when extended vertically, shall
be capable of reaching a height of onethird the beam of the vessel.
(b) The capacity of branch vents or
vent headers shall depend upon the
number of cargo tanks connected to
such branch or header as provided for
in the table 38.20–1(b), and upon the
total safety relief valve discharge capacity.
TABLE 38.20–1(b)—CAPACITY OF BRANCH
VENTS OR VENT HEADERS
Percent of total valve
discharge

Number of cargo tanks
1
3
4
5
6

or 2 .............................................
.....................................................
.....................................................
.....................................................
or more .......................................

(c) In addition to the requirements
specified in paragraphs (a) and (b) of
this section, the size of the branch
vents or vent headers, shall be such

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§ 38.20–5

46 CFR Ch. I (10–1–14 Edition)

that the back pressure in the relief
valve discharge lines shall not be more
than 10 percent of the safety relief
valve setting. In nonpressure vessel
vent systems, however, where the maximum back pressure of 10 percent of
the relief valve setting is insufficient
to move the gases through any but an
extremely large diameter vent pipe,
the back pressure may exceed 10 percent provided:
(1) The pressure in the tank during
venting does not exceed 120 percent of
the tank maximum allowable pressure;
and,
(2) The safety relief valve is sized to
discharge the required capacity with
the tank pressure and vent back pressure actually used.
(d) Return bends and restrictive pipe
fittings are not permitted.
(e) Vents and headers shall be so installed as to prevent excessive stresses
on safety relief valve mountings.
(f) The vent discharge riser shall be
so located as to provide protection
against mechanical injury and such
discharge pipes shall be fitted with
loose raincaps or other suitable means
to prevent entrance of rain or snow.
(g) No valve of any type shall be
fitted in the vent pipe between the
safety relief valve and the vent outlets.
(h) Provisions shall be made to drain
condensate from the vent header piping. Special precautions shall insure
that condensate does not accumulate
at or near the relief valves.
(i) Relief valves discharging liquid
cargo shall not be connected to the
branch vent or vent header lines from
the cargo tanks. They may, however,
be connected to an accumulator, the
vapor space of which, may in turn, be
connected to the vent header system.
Relief valves in the cargo piping system may discharge back to the cargo
tanks.
(j) Vapor discharged to the atmosphere in accordance with § 38.05–25(b)
shall utilize valves separate from the
safety relief valves.
§ 38.20–5 Venting—T/ALL.
(a) Safety relief valves on cargo
tanks in barges may be connected to
individual or common risers which
shall extend to a reasonable height
above the deck. An alternate arrange-

ment consisting of a branch vent header system as required by § 38.20–1 may
be installed. In any case, the provisions
of § 38.20–1 (d) through (j) shall apply.
(b) Arrangements providing for venting cargo tanks at sea on unmanned
barges will be considered by the Commandant upon presentation of plans.
§ 38.20–10 Ventilation—T/ALL.
(a) A power ventilation system shall
be provided for compartments containing pumps, compressors, pipes, control spaces, etc. connected with the
cargo handling facilities. These compartments shall be ventilated in such a
way as to remove vapors from points
near the floor level or bilges, or other
areas where vapor concentrations may
be expected. The compartments shall
be equipped with power ventilation of
the exhaust type having capacity sufficient to effect a complete change of air
in not more than 3 minutes equal to
the volume of the compartment and associated trunks.
(b) The power ventilation units shall
not produce a source of vapor ignition
in either the compartment or the ventilation system associated with the
compartment. Inlets to exhaust ducts
shall be provided and located at points
where concentrations of vapors may be
expected. Ventilation from the weather
deck shall be provided. Ventilation
outlets shall terminate away from any
openings to the interior part of the vessel a lateral distance at least equal to
that specified in § 38.20–1(a). These outlets shall be so located as to minimize
the possibility of recirculating contaminated air through the compartment.
(c) Means shall be provided for purging the following spaces of cargo vapors:
(1) The space surrounding nonpressure vessel type tanks, i.e., within the
secondary barrier.
(2) The space surrounding pressurevessel type tanks whose piping connections are below the weather deck in accordance with § 38.10–1(h).
(3) The space surrounding tanks
whose manhole openings are below the
weather deck in accordance with
§ 38.05–10(f).
(d) Power ventilation shall be provided for each auxiliary machinery or

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Coast Guard, DHS

§ 38.25–3

working space located on and accessible from the cargo handling deck.
Such ventilation systems shall be designed to preclude the entry of cargo
vapors into the space via the open access or the ventilation system itself.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGFR 68–65, 33 FR 19985, Dec. 28,
1968]

Subpart 38.25—Periodic Tests and
Inspections
§ 38.25–1 Tests
ALL.

and

inspections—TB/

(a) Each tank shall be subjected to
the tests and inspections described in
this section in the presence of a marine
inspector, except as otherwise provided
in this part.
(1) An internal inspection of the tank
is conducted within—
(i) Ten years after the last internal
inspection if the tank is a pressure vessel type cargo tank on an unmanned
barge carrying cargo at temperatures
of ¥67 °F (¥55 °C) or warmer; or
(ii) Eight years after the last internal
inspection if the tank is of a type other
than that described in paragraph
(a)(1)(i) of this section.
(2) An external examination of
unlagged tanks and the visible parts of
lagged tanks shall be made at each inspection for certification and at such
other times as considered necessary.
(3) The owner shall ensure that the
amount of insulation deemed necessary
by the marine inspector is removed
from insulated tanks during each internal inspection to allow spot external
examination of the tanks and insulation, or the thickness of the tanks may
be gauged by a nondestructive means
accepted by the marine inspector without the removal of insulation.
(4) If required by the Officer in
Charge, Marine Inspection, the owner
shall conduct nondestructive testing of
each tank in accordance with § 38.25–3.
(5) If the tank is a pressure vessel
type cargo tank with an internal inspection interval of 10 years, is 30 years
old or older, determined from the date
it was built, the owner shall conduct
nondestructive testing of that tank, in
accordance with § 38.25–3, during each
internal inspection.

(b) If the marine inspector considers
a hydrostatic test necessary to determine the condition of the tank, the
owner shall perform the test at a pressure of 11⁄2 times the tank’s—
(1) Maximum allowable pressure, as
determined by the safety relief valve
setting; or
(2) Design pressure, when cargo tanks
operate at maximum allowable pressures reduced below the design pressure
in order to satisfy special mechanical
stress relief requirements.
NOTE: See the ASME Code, section VIII,
appendix 3 for information on design pressure.

(c) For pressure vessels designed and/
or supported such that they cannot
safely be filled with water, the Commandant will consider a pneumatic
test in lieu of the hydrostatic test. A
leak test shall be performed in conjunction with the pneumatic test.
Pneumatic testing shall be in accordance with subchapter F (Marine Engineering) of this chapter.
(d) Nonpressure vessel type tanks
shall be tested to a pressure equal to
the pressure on the bottom of the tank
under the design conditions listed in
§ 38.05–4(e).
(e) In the application of the requirements for testing of the cargo tanks,
the test shall in no case be less severe
than the worst anticipated service condition of the cargo loading.
(f) In the design and testing of the
independent cargo tanks, consideration
shall be given to the possibility of the
independent tanks being subjected to
external loads.
[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGD 85–061, 54 FR 50962, Dec. 11,
1989; USCG–2014–0688, 79 FR 58280, Sept. 29,
2014]

§ 38.25–3 Nondestructive
ALL.

(a) Before nondestructive testing
may be conducted to meet § 38.25–1
(a)(4) and (a)(5), the owner shall submit
a proposal to the Officer in Charge, Marine Inspection for acceptance that includes—
(1) The test methods and procedures
to be used, all of which must meet section V of the ASME Boiler and Pressure Vessel Code (1986);

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§ 38.25–5

46 CFR Ch. I (10–1–14 Edition)

(2) Each location on the tank to be
tested; and
(3) The test method and procedure to
be conducted at each location on the
tank.
(b) If the Officer in Charge, Marine
Inspection rejects the proposal, the Officer in Charge, Marine Inspection informs the owner of the reasons why the
proposal is rejected.
(c) If the Officer in Charge, Marine
Inspection accepts the proposal, then
the owner shall ensure that—
(1) The proposal is followed; and
(2) Nondestructive testing is performed by personnel meeting ASNT
‘‘Recommended Practice No. SNT-TC1A (1988), Personnel Qualification and
Certification in Nondestructive Testing.’’
(d) Within 30 days after completing
the nondestructive test, the owner
shall submit a written report of the results to the Officer in Charge, Marine
Inspection.
[CGD 85–061, 54 FR 50963, Dec. 11, 1989]

§ 38.25–5 Removal of defective tanks—
TB/ALL.
If a tank fails to pass the tests prescribed in this subpart, it shall be removed from service unless otherwise
authorized by the Commandant.
§ 38.25–10
ALL.

Safety

relief

valves—TB/

(a) The cargo tank safety relief
valves shall be inspected at least once
in every 2 years.
(b) The safety relief valve discs must
be lifted from their seats in the presence of a marine inspector by either
liquid, gas, or vapor pressure at least
once every 5 years to determine the accuracy of adjustment and, if necessary,
must be reset.

39.1005 Incorporation
by
reference—TB/
ALL.
39.1009 Additional tank vessel vapor processing unit requirements—TB/ALL.
39.1011 Personnel training requirements—
TB/ALL.
39.1013 U.S.-flagged tank vessel certification procedures for vapor control system designs—TB/ALL.
39.1015 Foreign-flagged tank vessel certification procedures for vapor control system designs—TB/ALL.
39.1017 Additional certification procedures
for a tank barge vapor collection system
design—B/ALL.

Subpart 39.2000—Equipment and
Installation
39.2001 Vapor collection system—TB/ALL.
39.2003 Cargo gauging system—TB/ALL.
39.2007 Tankship liquid overfill protection—
T/ALL.
39.2009 Tank barge liquid overfill protection—B/ALL.
39.2011 Vapor overpressure and vacuum protection—TB/ALL.
39.2013 High and low vapor pressure protection for tankships—T/ALL.
39.2014 Polymerizing cargoes safety—TB/
ALL.
39.2015 Tank barge pressure-vacuum indicating devices—B/ALL.

Subpart 39.3000—Vapor Collection
Operations During Cargo Transfer
39.3001 Operational requirements for vapor
control systems during cargo transfer—
TB/ALL.

Subpart 39.4000—Vessel-to-Vessel
Transfers Using Vapor Balancing
39.4001 General requirements for vapor balancing—TB/ALL.
39.4003 Design and equipment for vapor balancing—TB/ALL.
39.4005 Operational requirements for vapor
balancing—TB/ALL.

[CGFR 66–33, 31 FR 15269, Dec. 6, 1966, as
amended by CGD 95–027, 61 FR 26000, May 23,
1996]

39.5001 General requirements for multibreasted loading—B/CLBR.
39.5003 Additional requirements for multibreasted loading using inboard barge
vapor collection system—B/CLBR.
39.5005 Additional requirements for multibreasted loading using a ‘‘dummy’’ vapor
header—B/CLBR.

PART 39—VAPOR CONTROL
SYSTEMS
Subpart 39.1000—General
Sec.
39.1001
39.1003

Subpart 39.5000—Multi-breasted Loading
Using a Single Facility Vapor Connection

Applicability—TB/ALL.
Definitions—TB/ALL.

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Coast Guard, DHS

§ 39.1003

Subpart 39.6000—Tank Barge Cleaning
Operations with Vapor Collection

ience. Regulatory compliance with the
regulatory measurement is required.

39.6001 Design and equipment of vapor collection and stripping systems—B/ALL.
39.6003 Overpressure and underpressure protection during stripping and gas-freeing
operations—B/ALL.
39.6005 Inspection prior to conducting gasfreeing operations—B/ALL.
39.6007 Operational requirements for tank
barge cleaning—B/ALL.
39.6009 Barge person in charge: Designation
and qualifications—B/ALL.
AUTHORITY: 33 U.S.C. 1225, 1231; 42 U.S.C.
7511b(f)(2); 46 U.S.C. 3306, 3703, 3715(b); E.O.
12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277;
Department of Homeland Security Delegation No. 0170.1.
SOURCE: USCG–1999–5150, 78 FR 42642, July
16, 2013, unless otherwise noted.

Subpart 39.1000—General
§ 39.1001

Applicability—TB/ALL.

(a) This part applies to tank vessels
that use a vapor control system (VCS)
to collect vapors emitted to or from a
vessel’s cargo tanks while operating in
the navigable waters of the United
States, except—
(1) Tank vessels with an operating
vapor collection system approved by
the Coast Guard prior to July 23, 1990,
for the collection and transfer of cargo
vapor to specific facilities. Such tank
vessels are only subject to 46 CFR
39.1013, 39.3001, and 39.4005; and
(2) A tank barge that collects vapors
emitted from its cargo tanks during
gas-freeing or cleaning operations at a
cleaning facility. This type of tank
barge is only subject to 46 CFR part 39,
subparts 39.1000 and 39.6000, and must
comply with requirements of these two
subparts at the time of its next inspection for certification required by 46
CFR 31.10–15, but no later than August
15, 2018.
(b) This part does not apply to the
collection of vapors of liquefied flammable gases as defined in 46 CFR 30.10–
39.
(c) In this part, regulatory measurements, whether in the metric or
English system, are sometimes followed by approximate equivalent measurements in parentheses, which are
given solely for the reader’s conven-

§ 39.1003

Definitions—TB/ALL.

As used in this part only:
Barge vapor connection means the
point in a barge’s piping system where
it connects to a vapor collection hose
or arm. This may be the same as the
barge’s cargo connection while controlling vapors during tank barge cargo
tank-cleaning operations.
Cargo deck area means that part of
the weather deck that is directly over
the cargo tanks.
Cargo tank venting system means the
venting system required by 46 CFR
32.55.
Certifying entity means a certifying
entity accepted by the Coast Guard as
such pursuant to 33 CFR part 154, subpart P.
Cleaning facility means a facility used
or capable of being used to conduct
cleaning operations on a tank barge.
Cleaning operation means any stripping, gas-freeing, or tank-washing operation of a barge’s cargo tanks conducted at a cleaning facility.
Commandant means the Commandant
(CG–ENG), U.S. Coast Guard, 2100 2nd
St. SW., Stop 7126, Washington, DC
20593–7126.
Facility vapor connection means the
point in a facility’s fixed vapor collection system where the system connects
with the vapor collection hose or the
base of the vapor collection arm.
Fixed stripping line means a pipe extending to the low point of each cargo
tank, which is welded through the deck
and terminated above deck with a
valve, and plugged at the open end.
Flammable liquid means a liquid as defined in 46 CFR 30.10–22.
Fluid displacement system means a system that removes vapors from a
barge’s cargo tanks during gas freeing
through the addition of an inert gas or
other medium into the cargo tank.
Fluid injection connection means the
point in a fluid displacement system at
which the fixed piping or hose that supplies the inert gas or other medium
connects to a barge’s cargo tanks or
fixed piping system.
Gas freeing means the removal of vapors from a tank barge.

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§ 39.1005

46 CFR Ch. I (10–1–14 Edition)

Independent as applied to two systems
means that one system will operate
when there is a failure of any part of
the other system.
Inerted means the oxygen content of
the vapor space in a cargo tank is reduced in accordance with the inert gas
requirements of 46 CFR 32.53 or 33 CFR
153.500. If a cargo vapor in a cargo tank
that is connected to the vapor collection system is defined as inerted at the
start of cargo transfer, the oxygen content in the vapor space of the cargo
tank must not exceed 60 percent by
volume of the cargo’s minimum oxygen
concentration for combustion, or 8 percent by volume for vapor of crude oil,
gasoline blends, or benzene.
Marine Safety Center (MSC) means
Commanding Officer, Marine Safety
Center, U.S. Coast Guard, 4200 Wilson
Boulevard Suite 400, Arlington, VA
22203 for visitors. Send all mail to Commanding Officer (MSC), Attn: Marine
Safety Center, U.S. Coast Guard Stop
7410, 4200 Wilson Boulevard Suite 400,
Arlington, VA 20598–7410.
Maximum allowable gas-freeing rate
means the maximum volumetric rate
at which a barge may be gas-freed during cleaning operations.
Maximum allowable stripping rate
means the maximum volumetric rate
at which a barge may be stripped during cleaning operations prior to the
opening of any hatch and/or fitting on
the cargo tank being stripped.
Maximum
allowable
transfer
rate
means the maximum volumetric rate
at which a vessel may receive cargo or
ballast.
Minimum oxygen concentration for combustion (MOCC) means the lowest level
of oxygen in a vapor or vapor mixture
that will support combustion.
New vapor collection system means a
vapor collection system that is not an
existing vapor collection system.
Service vessel means a vessel that
transports bulk liquid cargo between a
facility and another vessel.
Set pressure means the pressure at
which the pressure or vacuum valve begins to open and the flow starts
through the valve.
Stripping means the removal, to the
maximum extent practicable, of cargo
residue remaining in the barge’s cargo
tanks and associated fixed piping sys-

tem after cargo transfer or during
cleaning operations.
Vacuum displacement system means a
system that removes vapors from a
barge’s cargo tanks during gas-freeing
by sweeping air through the cargo tank
hatch openings.
Vapor balancing means the transfer of
vapor displaced by incoming cargo
from the tank of a vessel or facility receiving cargo into a tank of the vessel
or facility delivering cargo via a vapor
collection system.
Vapor collection system means an arrangement of piping and hoses used to
collect vapor emitted to or from a vessel’s cargo tanks and to transport the
vapor to a vapor processing unit or a
tank.
Vapor control system (VCS) means an
arrangement of piping and equipment
used to control vapor emissions collected to or from a vessel. It includes
the vapor collection system and vapor
processing unit or a tank.
Vapor processing unit means the components of a VCS that recover, destroy,
or disperse vapor collected from a vessel.
Vessel-to-vessel transfer (direct or
through a shore loop) means either—
(1) The transfer of a bulk liquid cargo
from a tank vessel to a service vessel;
or
(2) The transfer of a bulk liquid cargo
from a service vessel to another vessel
in order to load the receiving vessel to
a deeper draft.
Vessel vapor connection means the
point in a vessel’s fixed vapor collection system where the system connects
with the vapor collection hose or arm.
[USCG–1999–5150, 78 FR 42642, July 16, 2013, as
amended by USCG–2013–0671, 78 FR 60147,
Sept. 30, 2013]

§ 39.1005 Incorporation by reference—
TB/ALL.
(a) Certain material is incorporated
by reference (IBR) into this part with
the approval of the Director of the
FEDERAL REGISTER under 5 U.S.C. 552(a)
and 1 CFR part 51. To enforce any edition other than that specified in this
section, the Coast Guard must publish
notice of change in the FEDERAL REGISTER and the material must be available to the public. All approved material is available for inspection at the

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Coast Guard, DHS

§ 39.1009

Coast Guard, Office of Design and Engineering Standards (CG–ENG) 2100 2nd
Street SW., Stop 7126, Washington, DC
20593–7126, telephone 202–372–1418 and at
the National Archives and Records Administration (NARA). For information
on the availability of this material at
NARA, call 202–741–6030 or go to http://
www.archives.gov/federallregister/
codeloflfederallregulations/
ibrllocations.html. Also, it is available
from the sources indicated in this section.
(b) American National Standards Institute (ANSI), 25 West 43rd Street, 4th
floor, New York, NY 10036.
(1) ANSI B16.5, Steel Pipe Flanges
and Flanged Fittings, 1981, IBR approved for §§ 39.2001(i) and 39.6001(k).
(2) [Reserved]
(c) American Petroleum Institute
(API), 1220 L Street NW., Washington,
DC 20005.
(1) API Standard 2000, Venting Atmospheric and Low-Pressure Storage
Tanks (Non-refrigerated and Refrigerated), Third Edition, January 1982
(reaffirmed
December
1987)(‘‘API
2000’’), IBR approved for § 39.2011(b).
(2) [Reserved]
(d) ASTM International (ASTM), 100
Barr
Harbor
Drive,
West
Conshohocken, PA 19428–2959.
(1) ASTM F1122–87 (Reapproved1992)—
Standard Specification for Quick Disconnect Couplings (‘‘ASTM F1122’’),
IBR approved for § 39.2001(k).
(2) ASTM F1271—Standard Specification for Spill Valves for Use in Marine
Tank Liquid Overpressure Protection
Applications (‘‘ASTM F1271’’), December 29, 1989, IBR approved for
§ 39.2009(a).
(e) International Electrotechnical
Commission (IEC), Bureau Central de
la Commission Electrotechnique Internationale, 3, rue de Varembe´, P.O. Box
131, CH—1211 Geneva 20, Switzerland.
(1) IEC 60309–1 Plugs, Socket-Outlets
and Couplers for Industrial Purposes—
Part 1: General Requirements, Edition
4.2 2012–06, IBR approved for § 39.2009(a).
(2) IEC 60309–2 Plugs, Socket-Outlets
and Couplers for Industrial Purposes—
Part 2: Dimensional Interchangeability
Requirements for Pin and Contact-tube
Accessories, Edition 4.2 2012–05, IBR approved for § 39.2009(a).

(f) International Maritime Organization (IMO), 4 Albert Embankment,
London SE1 7SR, United Kingdom.
(1) International Convention for the
Safety of Life at Sea, Consolidated
Text of the 1974 SOLAS Convention,
the 1978 SOLAS Protocol, the 1981 and
1983
SOLAS
Amendments
(1986)
(‘‘SOLAS’’),
IBR
approved
for
§ 39.2001(e).
(2) [Reserved]
(g) National Electrical Manufacturers Association (NEMA), 1300 North
17th Street, Suite 1752, Rosslyn, VA
22209.
(1) ANSI NEMA WD–6—Wiring Devices, Dimensional Requirements, 1988
(‘‘NEMA WD–6’’), IBR approved for
§ 39.2009(a)
(2) [Reserved]
(h) National Fire Protection Association (NFPA), 1 Batterymarch Park,
Quincy, MA 02169–7471.
(1) NFPA 70—National Electrical
Code, 2011, IBR approved for § 39.2009(a).
(2) [Reserved]
(i) Oil Companies International Marine Forum (OCIMF), 29 Queen Anne’s
Gate, London SWIH 9BU, England.
(1) International Safety Guide for Oil
Tankers and Terminals, Fifth Edition,
2006 (‘‘ISGOTT’’), IBR approved for
§§ 39.3001(g), 39.5001(c), 39.6001(g), and
39.6005(a).
(2) [Reserved]
EDITORIAL NOTE: At 78 FR 60147, Sept. 30,
2013, § 39.1005 was amended; however, the
amendment could not be incorporated due to
inaccurate amendatory instruction.

§ 39.1009 Additional tank vessel vapor
processing unit requirements—TB/
ALL.
(a) Vapor piping, fitting, valves,
flanges, and pressure vessels comprising the construction and installation of a permanent or portable vapor
processing unit onboard a tank vessel
must meet the marine engineering requirements of 46 CFR chapter I, subchapter F.
(b) Electrical equipment comprising
the construction and installation of a
permanent or portable vapor processing unit onboard a tank vessel must
meet the electrical engineering requirements of 46 CFR chapter I, subchapter J.

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§ 39.1011

46 CFR Ch. I (10–1–14 Edition)

(c) In addition to complying with the
rules of this part, tank vessels with a
permanent or portable vapor processing unit must comply with applicable requirements of 33 CFR part 154,
subpart P.
(d) When differences between the requirements for vessels contained in 46
CFR chapter I, subchapters F and J and
requirements for facilities contained in
33 CFR part 154, subpart P need to be
resolved, the requirements of 46 CFR
chapter I, subchapters F and J apply,
unless specifically authorized by the
Marine Safety Center.
§ 39.1011 Personnel training requirements—TB/ALL.
Personnel responsible for operating
the vapor control system (VCS) must
complete a training program prior to
the operation of the system installed
onboard the tank vessel. As part of the
training program, personnel must be
able to demonstrate, through drills and
practical knowledge, the proper VCS
operation procedures for normal and
emergency conditions. The training
program must cover the following subjects:
(a) Purpose of a VCS;
(b) Principles of the VCS;
(c) Components of the VCS;
(d) Hazards associated with the VCS;
(e) Coast Guard regulations in this
part;
(f) Vapor control operation procedures during cargo transfer or tank
barge cleaning, including:
(1) Testing and inspection requirements;
(2) Pre-transfer or pre-cleaning procedures;
(3) Connection sequence;
(4) Startup procedures; and
(5) Normal operations; and
(g) Emergency procedures.
§ 39.1013 U.S.-flagged tank vessel certification procedures for vapor control system designs—TB/ALL.
(a) For an existing Coast Guard-approved vapor control system (VCS)
that has been operating before July 23,
1990, the tank vessel owner or operator
must submit detailed engineering
drawings, calculations, and specifications to the Marine Safety Center
(MSC) for review and approval before

modifying the system or transferring
vapor to a facility that was not approved by the Coast Guard for that
kind of vapor transfer.
(b) For a Coast Guard-approved vessel VCS that began operating on or
after July 23, 1990, the tank vessel
owner or operator must submit plans,
calculations, and specifications to the
MSC for review and approval before
modifying the system.
(c) A tank vessel owner or operator
must submit plans, calculations, and
specifications for a new tank vessel
VCS to the MSC for review and approval before installing the system. A
permanent or portable vapor processing unit onboard a tank vessel will
be reviewed, together with the tank
vessel, as a complete and integrated
system.
(d) Once the plan review and inspection of the tank vessel VCS satisfy the
requirements of this part, the Officer
in Charge, Marine Inspection (OCMI)
will endorse the Certificate of Inspection for the U.S.-flagged tank vessel.
§ 39.1015 Foreign-flagged tank vessel
certification procedures for vapor
control system designs—TB/ALL.
As an alternative to meeting the requirements in 33 CFR 39.1013(a), (b),
and (c), the owner or operator of a foreign-flagged tank vessel may submit
certification by the classification society that classifies vessels under their
foreign flags to the Marine Safety Center. Upon receipt of the certification
stating that the vapor control system
(VCS) meets the requirements of this
part, the Officer in Charge, Marine Inspection (OCMI) will endorse the vessel’s Certificate of Compliance for foreign-flagged tank vessels.
§ 39.1017 Additional certification procedures for a tank barge vapor collection system design—B/ALL.
(a) For a tank barge vapor collection
system intended for operation in multibreasted loading using a single facility
vapor connection, the tank barge
owner or operator must submit plans,
calculations, and specifications to the
Marine Safety Center (MSC) for review
and approval before beginning a multibreasted loading operation.

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Coast Guard, DHS

§ 39.2001

(b) For a tank barge intended for collecting vapors emitted from its cargo
tanks during gas-freeing or cleaning
operations at a cleaning facility, the
barge owner or operator must submit
the following items to the MSC for review and approval:
(1) Stripping system plans and specifications, except those approved by the
MSC on or before the August 15, 2013;
and
(2) Stripping and/or gas-freeing rate
calculations, except those approved by
the MSC on or before the August 15,
2013.
(c) Once the vapor collection system
satisfies the requirements of this part,
the Officer in Charge, Marine Inspection (OCMI) will endorse the Certificate of Inspection that the tank barge
is acceptable for collecting vapors during cleaning operations.

Subpart 39.2000—Equipment and
Installation
§ 39.2001 Vapor collection system—TB/
ALL.
(a) Vapor collection piping must be
fixed piping and the vessel’s vapor connection must be located as close as
practicable to the loading manifold, except—
(1) As allowed by the Commandant;
and
(2) A vessel certificated to carry
cargo listed in 46 CFR, part 151, Table
151.05 or part 153, Table 1 may use flexible hoses no longer than three meters
(9.84 feet) for interconnection between
fixed piping onboard the vessel to preserve segregation of cargo systems.
These flexible hoses must also meet
the requirements in paragraph (i) of
this section, excluding paragraph (i)(5),
and meet the following additional requirements:
(i) The installation of flexible hoses
must include an isolation valve mounted on the tank side of the connection;
and
(ii) Hose connections permitted under
paragraph (a)(2) of this section are exempt from the requirements of paragraph (h) of this section.
(b) When collecting incompatible vapors simultaneously, vapors must be
kept separate throughout the entire
vapor collection system.

(c) Vapor collection piping must be
electrically bonded to the hull and
must be electrically continuous.
(d) The vapor collection system must
have a mechanism to eliminate liquid
condensation, such as draining and collecting liquid from each low point in
the line.
(e) For a tankship that has an inert
gas system, a mechanism must be in
place to isolate the inert gas supply
from the vapor control system (VCS).
The inert gas main isolation valve required by chapter II–2, Regulation
62.10.8 of SOLAS (incorporated by reference, see 46 CFR 39.1005), may be used
to satisfy this requirement.
(f) The vapor collection system must
not interfere with the proper operation
of the cargo tank venting system.
(g) The tank vessel owner or operator
must install an isolation valve capable
of manual operation. It must be located at the vessel vapor connection
and must clearly show whether the
valve is in the open or closed position
via an indicator, valve handle, or valve
stem.
(h) The last 1.0 meter (3.3 feet) of
vapor piping upstream of the vessel
vapor connection and each end of a
vapor hose must be—
(1) Painted in the sequence of red/yellow/red. The width of the red bands
must be 0.1 meter (0.33 foot) and the
width of the middle yellow band must
be 0.8 meter (2.64 feet); and
(2) Labeled with the word ‘‘VAPOR’’
painted in black letters at least 50.8
millimeters (2 inches) high.
(i) Hoses that transfer vapors must
meet the following requirements:
(1) Have a design burst pressure of at
least 25 pounds per square inch gauge
(psig);
(2) Have a maximum allowable working pressure no less than 5 psig;
(3) Be capable of withstanding at
least a 2.0 pounds per square inch (psi)
vacuum without collapsing or constricting;
(4) Be electrically continuous with a
maximum resistance of 10,000 ohms;
(5) Have flanges with—
(i) A bolthole arrangement complying with the requirements for 150
pound class ANSI B16.5 flanges (incorporated by reference, see 46 CFR
39.1005); and

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§ 39.2003

46 CFR Ch. I (10–1–14 Edition)

(ii) One or more 15.9 millimeter (0.625
inch) diameter hole(s) located midway
between boltholes and in line with the
bolthole pattern; and
(6) Be abrasion and kinking resistant.
(j) Each vessel vapor connection
flange face must have a permanent
stud projecting outward that has a 12.7
millimeter (0.5 inch) diameter and is at
least 25.4 millimeters (1 inch) long. It
must be located at the top of the flange
face, midway between boltholes, and in
line with the bolthole pattern.
(k)
Quick
disconnect
couplings
(QDCs) may be used instead of flanges
at the flexible hose connection and
fixed piping on tankships provided they
meet ASTM F1122 (incorporated by reference, see 46 CFR 39.1005) and are designed as ‘‘Standard Class QDC.’’
(l) Hose saddles that provide adequate support to prevent kinking or
collapse of hoses must accompany
vapor hose handling equipment.
(m) For cargoes that have toxic properties, listed in 46 CFR Table 151.05
with the ‘‘Special requirements’’ column referring to 46 CFR 151.50–5, an
overfill alarm and shutdown system
that meet the requirements of 46 CFR
39.2007(a), 39.2009(a), or 39.2009(b) must
be used for primary overfill protection.
If the vessel is also equipped with spill
valves or rupture disks, their setpoints
must be set higher than the vessel’s
pressure relief valve setting as required
by 46 CFR 39.2009(a)(3).
§ 39.2003 Cargo gauging system—TB/
ALL.
(a) A cargo tank of the tank vessel
connected to a vapor collection system
must be equipped with a permanent or
portable cargo gauging device that—
(1) Is a closed type as defined in 46
CFR 151.15.10(c) that does not require
opening the tank to the atmosphere
during cargo transfer;
(2) Allows the operator to determine
the level of liquid in the tank for the
full range of liquid levels in the tank;
(3) Has an indicator for the level of
liquid in the tank that is located where
cargo transfer is controlled; and
(4) If portable, is installed on the
tank during the entire transfer operation.
(b) Each cargo tank of a tank barge
must have a high-level indicating de-

vice, unless the barge complies with 46
CFR 39.2009(a). The high-level indicating device must—
(1) Indicate visually the level of liquid in the cargo tank when the liquid
level is within a range of 1 meter (3.28
feet) of the top of the tank;
(2) Show a permanent mark to indicate the maximum liquid level permitted under 46 CFR 39.3001(e) at even
keel conditions; and
(3) Be visible from all cargo control
areas.
§ 39.2007 Tankship liquid overfill protection—T/ALL.
(a) Each cargo tank of a tankship
must be equipped with an intrinsically
safe high-level alarm and a tank overfill alarm.
(b) If installed after July 23, 1990, the
high-level alarm and tank overfill
alarm required by paragraph (a) of this
section must—
(1) Be independent of each other;
(2) Activate an alarm in the event of
loss of power to the alarm system;
(3) Activate an alarm during the failure of electrical circuitry to the tank
level sensor; and
(4) Be able to be verified at the tank
for proper operation prior to each
transfer. This procedure may be
achieved with the use of an electronic
self-testing feature that monitors the
condition of the alarm circuitry and
sensor.
(c) The high-level alarm required by
paragraph (a) of this section must—
(1) Activate an alarm once the cargo
level reaches 95 percent of the tank capacity or higher, but before the tank
overfill alarm;
(2) Be identified with the legend
‘‘High-level Alarm’’ in black letters at
least 50.8 millimeters (2 inches) high on
a white background; and
(3) Activate a visible and audible
alarm so that it can be seen and heard
on the vessel where cargo transfer is
controlled.
(d) The tank overfill alarm required
by paragraph (a) of this section must—
(1) Be independent of the cargo gauging system;
(2) Be identified with the legend
‘‘TANK OVERFILL ALARM’’ in black
letters at least 50.8 millimeters (2
inches) high on a white background;

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Coast Guard, DHS

§ 39.2011

(3) Activate a visible and audible
alarm so that it can be seen and heard
on the vessel where cargo transfer is
controlled and in the cargo deck area;
and
(4) Activate an alarm early enough to
allow the person in charge of transfer
operations to stop the cargo transfer
before the tank overflows.
(e) If a spill valve is installed on a
cargo tank fitted with a vapor collection system, it must meet the requirements of 46 CFR 39.2009(c).
(f) If a rupture disk is installed on a
cargo tank fitted with a vapor collection system, it must meet the requirements of 46 CFR 39.2009(d).
§ 39.2009 Tank barge liquid overfill
protection—B/ALL.
(a) Each cargo tank of a tank barge
must have one of the following liquid
overfill protection arrangements:
(1) A system meeting the requirements of 46 CFR 39.2007 that—
(i) Includes a self-contained power
supply;
(ii) Is powered by generators on the
barge; or
(iii) Receives power from a facility
and is fitted with a shore tie cable and
a 120-volt, 20-ampere explosion-proof
plug that meets—
(A) ANSI NEMA WD–6 (incorporated
by reference, see 46 CFR 39.1005);
(B) NFPA 70, Articles 406.9 and 501–
145 (incorporated by reference, see 46
CFR 39.1005); and
(C) 46 CFR 111.105–9;
(2) An intrinsically safe overfill control system that—
(i) Is independent of the cargo-gauging device required by 46 CFR
39.2003(a);
(ii) Activates an alarm and automatic shutdown system at the facility
overfill control panel 60 seconds before
the tank is 100 percent liquid-full during a facility-to-vessel cargo transfer;
(iii) Activates an alarm and automatic shutdown system on the vessel
discharging cargo 60 seconds before the
tank is 100 percent liquid-full during a
vessel-to-vessel cargo transfer;
(iv) Can be inspected at the tank for
proper operation prior to each loading;
(v) Consists of components that, individually or in series, will not generate
or store a total of more than 1.2 volts

(V), 0.1 amperes (A), 25 megawatts
(MW), or 20 microJoules (μJ);
(vi) Has at least one tank overfill
sensor switch per cargo tank that is designed to activate an alarm when its
normally closed contacts are open;
(vii) Has all tank overfill sensor
switches connected in series;
(viii) Has interconnecting cabling
that meets 46 CFR 111.105–11(b) and (d),
and 46 CFR 111.105–17(a); and
(ix) Has a male plug with a five-wire,
16–A connector body meeting IEC
60309–1 and IEC 60309–2 (both incorporated by reference, see 46 CFR
39.1005), that is—
(A) Configured with pins S2 and R1
for the tank overfill sensor circuit, pin
G connected to the cabling shield, and
pins N and T3 reserved for an optional
high-level alarm circuit meeting the
requirements of this paragraph; and
(B) Labeled ‘‘Connector for Barge
Overflow Control System’’ and labeled
with the total inductance and capacitance of the connected switches and cabling;
(3) A spill valve that meets ASTM
F1271 requirements (incorporated by
reference, see 46 CFR 39.1005), and—
(i) Relieves at a predetermined pressure higher than the pressure at which
the pressure relief valves meeting the
requirements of 46 CFR 39.2011 operate;
(ii) Limits the maximum pressure at
the top of the cargo tank during liquid
overfill to not more than the maximum
design working pressure for the tank
when at the maximum loading rate for
the tank; and
(iii) Has a means to prevent opening
due to cargo sloshing while the vessel
is in ocean or coastwise service; or
(4) A rupture disk arrangement that
meets paragraphs (a)(3)(i), (ii), and (iii)
of this section and is approved by the
Commandant.
(b) A tank barge authorized to carry
a cargo having toxic properties, meaning they are listed in 46 CFR Table
151.05 with the ‘‘Special requirements’’
column referring to 46 CFR 151.50–5,
must comply with the requirements of
46 CFR 39.2001(m).
§ 39.2011 Vapor overpressure and vacuum protection—TB/ALL.
(a) The cargo tank venting system
required by 46 CFR 32.55 must—

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§ 39.2013

46 CFR Ch. I (10–1–14 Edition)

(1) Be capable of discharging cargo
vapor at the maximum transfer rate
plus the vapor growth for the cargo
such that the pressure in the vapor
space of each tank connected to the
vapor control system (VCS) does not
exceed—
(i) The maximum design working
pressure for the tank; or
(ii) If a spill valve or rupture disk is
fitted, the pressure at which the device
operates;
(2) Relieve at a pressure corresponding to a pressure in the cargo
tank vapor space not less than 1.0
pounds per square inch gauge (psig);
(3) Prevent a vacuum, which generates in any tank connected to the
vapor collection system during the
withdrawal of cargo or vapor at maximum rates, in a cargo tank vapor
space from exceeding the maximum design vacuum; and
(4) Not relieve at a vacuum corresponding to a vacuum in the cargo
tank vapor space between 14.7 pounds
per square inch absolute (psia) (0 psig)
and 14.2 psia (¥0.5 psig).
(b) Each pressure-vacuum relief valve
must—
(1) Be of a type approved under 46
CFR 162.017, for the pressure and vacuum relief setting desired;
(2) Be tested for venting capacity in
accordance with paragraph 1.5.1.3 of
API 2000 (incorporated by reference, see
46 CFR 39.1005). The test must be carried out with a flame screen fitted at
the vacuum relief opening and at the
discharge opening if the pressure-vacuum relief valve is not designed to ensure a minimum vapor discharge velocity of 30 meters (98.4 feet) per second;
and
(3) If installed after July 23, 1991,
have a mechanism to check that it operates freely and does not remain in
the open position.
(c) A liquid filled pressure-vacuum
breaker may be used for vapor overpressure and vacuum protection if the
vessel owner or operator obtains the
prior written approval of the Commandant.
(d) Vapor growth must be calculated
following the Marine Safety Center
guidelines available in Coast Guard
VCS
guidance
at
http://homeport.uscg.mil, or as specifically ap-

proved in writing by the Commandant
after consultation with the Marine
Safety Center.
§ 39.2013 High and low vapor pressure
protection for tankships—T/ALL.
Each tankship with a vapor collection system must be fitted with a pressure-sensing device, located as close as
practicable to the vessel vapor connection, that measures the pressure in the
main vapor collection line, which—
(a) Has a pressure indicator located
on the tankship where the cargo transfer is controlled; and
(b) Has a high-pressure and a lowpressure alarm that—
(1) Gives an audible and a visible
warning on the vessel where the cargo
transfer is controlled;
(2) Activates an alarm when the pressure-sensing device measures a high
pressure of not more than 90 percent of
the lowest pressure relief valve setting
in the cargo tank venting system; and
(3) Activates an alarm when the pressure-sensing device measures a low
pressure of not less than 0.144 pounds
per square inch gauge (psig) for an
inerted tankship, or the lowest vacuum
relief valve setting in the cargo tank
venting system for a non-inerted tankship.
§ 39.2014 Polymerizing
ty—TB/ALL.

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(a) Common vapor headers for polymerizing cargoes must be constructed
with adequate means to permit internal examination of vent headers.
(b) Vapor piping systems and pressure-vacuum valves that are used for
polymerizing cargoes must be inspected internally at least annually.
(c) Pressure-vacuum valves and spill
valves which are used for polymerizing
cargoes must be tested for proper
movement prior to each transfer.
§ 39.2015 Tank barge pressure-vacuum
indicating device—B/ALL.
A fixed pressure-sensing device must
be installed as close as practicable to
the vessel vapor connection on a tank
barge with a vapor collection system.
The pressure-sensing device must
measure the pressure vacuum in the
main vapor collection line and have a

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Coast Guard, DHS

§ 39.3001

pressure indicator located where the
cargo transfer is controlled.

Subpart 39.3000—Vapor Collection Operations During Cargo
Transfer
§ 39.3001 Operational requirements for
vapor control systems during cargo
transfer—TB/ALL.
(a) Vapor from a tank vessel may not
be transferred to a facility in the
United States, or vapor from a facility
storage tank may not be transferred to
a tank vessel, unless the facility’s marine vapor control system (VCS) is certified by a certifying entity as meeting
the requirements of 33 CFR part 154,
subpart P and the facility’s facility operations manual is marked by the local
Coast Guard Captain of the Port
(COTP) as required by 33 CFR
154.325(d).
(b) Vapor from a tank vessel may not
be transferred to a vessel that does not
have its certificate of inspection or
certificate of compliance endorsed as
meeting the requirements of this part
and for controlling vapor of the cargo
being transferred.
(c) For each cargo transferred using a
vapor collection system, the pressure
drop through the vapor collection system from the most remote cargo tank
to the vessel vapor connection, including vapor hoses if used by the vessel,
must be—
(1) Calculated at the maximum transfer rate and at lesser transfer rates;
(2) Calculated using a density estimate for the cargo vapor and air mixture, or vapor and inert gas mixture,
based on a partial pressure (partial
molar volumes) method for the mixture, assuming ideal gas law conditions;
(3) Calculated using a vapor growth
rate as stated in 46 CFR 39.2011(d) for
the cargo being transferred; and
(4) Included in the vessel’s transfer
procedures as a table or graph, showing
the liquid transfer rate versus the pressure drop.
(d) The rate of cargo transfer must
not exceed the maximum allowable
transfer rate as determined by the lesser of the following:
(1) Eighty percent of the total venting capacity of the pressure relief

valves in the cargo tank venting system when relieving at the set pressure.
(2) The total vacuum relieving capacity of the vacuum relief valves in the
cargo tank venting system when relieving at the set pressure.
(3) For a given pressure at the facility vapor connection, or if vessel-tovessel transfer at the vapor connection
of the service vessel, then the rate
based on pressure drop calculations at
which the pressure in any cargo tank
connected to the vapor collection system exceeds 80 percent of the setting of
any pressure relief valve in the cargo
tank venting system.
(e) Cargo tanks must not be filled
higher than—
(1) 98.5 percent of the cargo tank volume; or
(2) The level at which an overfill
alarm complying with 46 CFR 39.2007 or
39.2009(a)(2) is set.
(f) A cargo tank should remain sealed
from the atmosphere during cargo
transfer operations. The cargo tank
may only be opened temporarily for
gauging or sampling while the tank
vessel is connected to a VCS as long as
the following conditions are met:
(1) The cargo tank is not being filled
or no vapor is being transferred into
the cargo tank;
(2) For cargo loading, any pressure in
the cargo tank vapor space is first reduced to atmospheric pressure by the
VCS, except when the tank is inerted;
(3) The cargo is not required to be
closed or restricted gauged by 46 CFR
part 151, Table 151.05 or part 153, Table
1; and
(4) For static accumulating cargo, all
metallic equipment used in sampling
or gauging must be electrically bonded
to the vessel and remain bonded to the
vessel until it is removed from the
tank, and if the tank is not inerted, 30
minutes must have elapsed after any
cargo transfer to the tank is stopped,
before the equipment is put into the
tank.
(g) For static accumulating cargo,
the initial transfer rate must be controlled in accordance with OCIMF
ISGOTT Section 11.1.7 (incorporated by
reference, see 46 CFR 39.1005), in order
to minimize the development of a static electrical charge.

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§ 39.4001

46 CFR Ch. I (10–1–14 Edition)

(h) If cargo vapor is collected by a facility that requires the vapor from the
vessel to be inerted in accordance with
33 CFR 154.2105, the oxygen content in
the vapor space of each cargo tank connected to the vapor collection system
must not exceed 60 percent by volume
of the cargo’s minimum oxygen concentration for combustion (MOCC), or 8
percent by volume for vapor of crude
oil, gasoline blends, or benzene, at the
start of cargo transfer. The oxygen
content of each tank, or each area of a
tank formed by each partial bulkhead,
must be measured at a point 1.0 meter
(3.28 feet) below the tank top and at a
point equal to one-half of the ullage.
(i) If the vessel is equipped with an
inert gas system, the isolation valve
required by 46 CFR 39.2001(e) must remain closed during vapor transfer.
(j) Unless equipped with an automatic self-test and circuit-monitoring
feature, each high-level alarm and
tank overfill alarm on a cargo tank
being loaded, required by 46 CFR 39.2007
or 39.2009, must be tested at the tank
for proper operation within 24 hours
prior to the start of cargo transfer.

Subpart 39.4000—Vessel-to-Vessel
Transfers Using Vapor Balancing
§ 39.4001 General requirements for
vapor balancing—TB/ALL.
(a) Vessels using vapor balancing
while conducting a vessel-to-vessel
transfer operation, directly or through
a shore loop, must meet the requirements of this subpart in addition to the
requirements of 46 CFR part 39, subparts 39.1000, 39.2000, and 39.3000. Arrangements other than vapor balancing
used to control vapor emissions during
a vessel-to-vessel transfer operation
must receive approval from the Commandant.
(b) A vapor balancing operation must
receive approval from the Commandant
to use a compressor or blower to assist
vapor transfer.
(c) Vapor balancing is prohibited
when the cargo tanks on a vessel discharging cargo are inerted and the
cargo tanks on a vessel receiving cargo
are not inerted.
(d) A vessel that intends to collect
vapors (during a vessel-to-vessel transfer operation) from cargoes not pre-

viously approved must receive specific
approval from the Commandant before
beginning transfer operations.
§ 39.4003 Design and equipment for
vapor balancing—TB/ALL.
(a) During transfer operations, if the
cargo tanks are inerted on a vessel discharging cargo to a receiving vessel
with inerted cargo tanks, the service
vessel must—
(1) Inert the vapor transfer hose prior
to transferring cargo vapor; and
(2) Have an oxygen analyzer with a
sensor or sampling connection fitted
within 3 meters (9.74 feet) of the vessel
vapor connection that—
(i) Activates a visible and an audible
alarm on the service vessel where cargo
transfer is controlled when the oxygen
content in the vapor collection system
exceeds 60 percent by volume of the
cargo’s minimum oxygen concentration for combustion (MOCC), or 8 percent by volume for vapor of crude oil,
gasoline blends, or benzene;
(ii) Has an oxygen concentration indicator located on the service vessel
where the cargo transfer is controlled;
and
(iii) Has a connection for injecting a
span gas of known concentration for
calibration and testing of the oxygen
analyzer.
(b) If the cargo tanks are not inerted
on a vessel discharging cargo during
transfer operations, and the cargo is
flammable or combustible, the vapor
collection line on the service vessel
must be fitted with a detonation arrester that meets the requirements of
33 CFR 154.2106, and be located within 3
meters (9.74 feet) of the vessel vapor
connection.
(c) An electrical insulating flange or
one length of non-conductive hose
must be provided between the vessel
vapor connection on each vessel operating a vessel-to-vessel cargo transfer.
§ 39.4005 Operational requirements for
vapor balancing—TB/ALL.
(a) During a vessel-to-vessel transfer
operation, each cargo tank being loaded must be connected by the vapor collection system to a cargo tank that is
being discharged.
(b) If the cargo tanks on both the
vessel discharging cargo and the vessel

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Coast Guard, DHS

§ 39.5001

receiving cargo are inerted, the following requirements must be met:
(1) Each tank on a vessel receiving
cargo, which is connected to the vapor
collection system, must be tested prior
to cargo transfer to ensure that the oxygen content in the vapor space does
not exceed 60 percent by volume of the
cargo’s minimum oxygen concentration for combustion (MOCC), or 8 percent by volume for vapor of crude oil,
gasoline blends, or benzene. The oxygen content of each tank, or each area
of a tank formed by each partial bulkhead, must be measured at a point 1
meter (3.28 feet) below the tank top and
at a point equal to one-half of the
ullage;
(2) Prior to starting transfer operations, the oxygen analyzer required by
46 CFR 39.4003(a) must be tested for
proper operation;
(3) During transfer operations the oxygen content of vapors being transferred must be continuously monitored;
(4) Cargo transfer must be terminated if the oxygen content exceeds 60
percent by volume of the cargo’s
MOCC, or 8 percent by volume for
vapor of crude oil, gasoline blends, or
benzene;
(5) Transfer operations may resume
once the oxygen content in the tanks
of the vessel receiving cargo is reduced
to 60 percent by volume or less of the
cargo’s MOCC, or 8 percent by volume
or less for vapor of crude oil, gasoline
blends, or benzene; and
(6) Prior to starting vapor transfer
operations, the vapor transfer hose
must be purged of air and inerted.
(c) The isolation valve located on the
service vessel required by 46 CFR
39.2001(g) must not be opened until the
pressure in the vapor collection system
on the vessel receiving cargo exceeds
the pressure in the vapor collection
system on the vessel discharging cargo.
(d) The vessel discharging cargo must
control the cargo transfer rate so that
the transfer rate does not exceed—
(1) The authorized maximum discharge rate of the vessel discharging
cargo;
(2) The authorized maximum loading
rate of the vessel receiving cargo; or
(3) The processing rate of the approved vessel vapor processing system,

if one is used to process the vapor collected during the transfer operations.
(e) The pressure in the vapor space of
any cargo tank connected to the vapor
collection line on either the vessel receiving cargo or the vessel discharging
cargo must not exceed 80 percent of the
lowest setting of any pressure relief
valve during ballasting or cargo transfer.
(f) Impressed current cathodic protection systems must be de-energized
during cargo transfer operations.
(g) Tank washing is prohibited unless
the cargo tanks on both the vessel discharging cargo and the vessel receiving
cargo are inerted, or the tank is isolated from the vapor collection line.

Subpart 39.5000—Multi-breasted
Loading Using a Single Facility
Vapor Connection
§ 39.5001 General requirements for
multi-breasted loading—B/CLBR.
(a) Each barge must be owned or operated by the same entity and must
have an approved vapor control system
(VCS).
(b) There must be only one crossover
vapor hose and it must—
(1) Comply with 46 CFR 39.2001(h) and
(i);
(2) Have a diameter at least as that
of the largest pipe in the outboard
barge’s VCS, and
(3) If it extends more than 25 feet
(7.62 meters) between the two barges
during the transfer operation, it must
be as short as is practicable, safe for
the conditions, supported off the vessels’ decks, and its pressure drop calculations must be approved for its
length by the Marine Safety Center
(MSC), or reapproved by the MSC if existing approval was based on a 25-foot
hose.
(c) The hazards associated with
barge-to-barge or barge-to-shore electric currents must be controlled in accordance with sections 11.9 or 17.5 of
OCIMF ISGOTT (incorporated by reference, see 46 CFR 39.1005).
(d) The cargo transfer procedures
must reflect the procedures to align
and disconnect a facility VCS to and
from an inboard barge, and alternately,
to and from an outboard barge through

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§ 39.5003

46 CFR Ch. I (10–1–14 Edition)

the vapor cross-over hose and the inboard
barge’s
vapor
header,
or
‘‘dummy’’ header. This must include
proper connections for the facility
VCS’s alarm/shutdown system to the
alarm/shutdown system of the barge
being loaded at the time.
(e) Calculations for multi-breasted
loading must consider additional pressure drops across the barges’ vapor collection systems and the cross vapor
hose and must be reviewed and approved by the MSC per 46 CFR
39.1017(a).
(f) Barge owners and operators must
comply with any additional operational requirements imposed by the
local Captain of the Port (COTP) in
whose zone the shore facility is located. These facilities’ VCSs must be
certified for conducting such an operation.
§ 39.5003 Additional requirements for
multi-breasted loading using an inboard barge vapor collection system—B/CLBR.
(a) Each barge must have at least one
liquid overfill protection system that
fulfills the requirements of 46 CFR
39.2009.
(b) The vapor header of an inboard
barge that is used during outboard
barge loading must—
(1) Be aligned with the vapor header
of the outboard barge;
(2) Have a diameter at least as large
as the diameter of the largest pipe in
the vapor collection system of the outboard barge; and
(3) Be marked in accordance with 46
CFR 39.2001(h).
(c) A licensed tankerman, trained in
and familiar with multi-breasted loading operations, must be onboard each
barge during transfer operations. The
tankerman serves as the barge personin-charge (PIC). During transfer operations, the barge PICs must maintain
constant communication with each
other as well as with the facility PIC.
(d) If multi-breasted loading will be
conducted using more than one liquid
transfer hose from the shore facility,
the facility must be capable of activating the emergency shutdown system
required by 33 CFR 154.550. This will
automatically stop the cargo flow to
each transfer hose simultaneously, in

the event an upset condition occurs
that closes the remotely operated
cargo vapor shutoff valve in the facility’s vapor control system. Multibreasted loading is prohibited unless
the shore facility can comply with this
requirement.
§ 39.5005 Additional requirements for
multi-breasted loading using a
‘‘dummy’’ vapor header—B/CLBR.
(a) Each inboard barge ‘‘dummy’’
header used during outboard barge
loading must—
(1) Be aligned with the vapor header
of the outboard barge;
(2) Have a diameter at least as large
as the diameter of the largest pipe in
the vapor collection system of the outboard barge;
(3) Be marked in accordance with 46
CFR 39.2001(h); and
(4) Meet the same design and installation requirements for the vapor collection piping onboard the same barge.
(b) Flanges must meet the same design and installation requirements for
flanges in the vapor collection system
onboard the same barge.
(c) A stud must be permanently attached, as required in 46 CFR 39.2001(j),
to the vapor connection flange on the
‘‘dummy’’ header.

Subpart
39.6000—Tank
Barge
Cleaning
Operations
with
Vapor Collection
§ 39.6001 Design and equipment of
vapor collection and stripping systems—B/ALL.
(a) Each barge engaged in cleaning
operations at an approved cleaning facility must have a conductive fixed
stripping line installed in each cargo
tank. The line must extend to the low
point of each cargo tank, extend
through and be welded to the top of the
cargo tank, and terminate above deck
with a full port valve plugged at the
open end.
(b) An existing fixed stripping system
may be used instead of the stripping
line required in paragraph (a) of this
section.
(c) Each stripping line must be labeled at an on-deck location with the
words ‘‘Stripping Line-Tank’’ followed

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by the tank’s number, name, or location.
(d) Vapors may be collected from the
barge’s cargo tanks through a common
fixed vapor header, through the fixed
liquid cargo header, or through flanged
flexible hoses located at the top of each
cargo tank.
(e) The vapor collection system must
not interfere with the proper operation
of the cargo tank venting system.
(f) A barge being gas-freed by a fluid
displacement system must fulfill the
following requirements:
(1) If the fluid medium is a compressible fluid, such as inert gas, it must be
injected into the barge’s cargo tanks
through a common fixed vapor header,
through the fixed liquid cargo header,
or through a flexible hoses flanged to a
connection located at the top of each
cargo tank;
(2) If the fluid medium is a non-compressible fluid, such as water, it must
be injected into the barge’s cargo tanks
through the fixed liquid cargo header
only; and
(3) If the fluid medium is a non-compressible fluid, such as water, the barge
must be equipped with a liquid overfill
protection arrangement and fulfill the
requirements for tank barge liquid
overfill protection contained in 46 CFR
39.2009.
(g) The barge vapor connection must
be electrically insulated from the facility vapor connection and the fluid injection connection must be electrically
insulated from the fluid injection
source, if fitted, in accordance with
OCIMF ISGOTT section 17.5 (incorporated by reference, see 46 CFR
39.1005).
(h) Vapor collection piping must be
electrically bonded to the barge hull
and must be electrically continuous.
(i) All equipment used on the barge
during cleaning operations must be
electrically bonded to the barge and
tested to ensure electrical continuity
prior to each use.
(j) Hoses used for the transfer of vapors during cleaning operations must
meet the requirements of 46 CFR
39.2001(i) and have markings as required in 46 CFR 39.2001(h).
(k) Hoses used for the transfer of liquids during cleaning operations must—

(1) Have a designed burst pressure of
at least 600 pounds per square inch
gauge (psig);
(2) Have a maximum allowable working pressure of at least 150 psig;
(3) Be capable of withstanding at
least the maximum vacuum rating of
the cleaning facility’s vapor-moving
device without collapsing or constricting;
(4) Be electrically continuous with a
maximum resistance of 10,000 ohms;
(5) Have flanges with a bolthole arrangement complying with the requirements for 150 pound class ANSI B16.5
flanges (incorporated by reference, see
46 CFR 39.1005); and
(6) Be abrasion and kinking resistant
and compatible with the liquids being
transferred.
(l) If a hose is used to transfer either
vapor or liquid from the barge during
cleaning operations, hose saddles that
provide adequate support to prevent
the collapse or kinking of hoses must
accompany hose handling equipment.
§ 39.6003 Overpressure and underpressure protection during stripping or
gas-freeing operations—B/ALL.
(a) The volumetric flow rates during
stripping or gas-freeing operations
must be limited within a range such
that the cargo tank venting system required by 46 CFR 32.55 will keep the
cargo tank within its maximum design
working pressure or the maximum design vacuum.
(b) Each barge must be fitted with a
means for connecting the pressuresensing and pressure-indicating devices
required by 33 CFR 154.2203(g) and (o)
on each cargo tank top, or on the common vapor header provided that pressures measured by the devices are adjusted to compensate for the pressure
drop across the vapor piping from the
cargo tank to the devices. The valve
for the connection point must be labeled ‘‘Pressure Sensor/indicator Connection.’’
(c) For stripping operations with
closed cargo tanks, the maximum
stripping rate must not exceed the volumetric flow capacity of the vacuum
relief valve protecting the cargo tank.

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§ 39.6005

46 CFR Ch. I (10–1–14 Edition)

§ 39.6005 Inspection prior to conducting gas-freeing operations—B/
ALL.
(a) The following inspections must be
conducted by the barge person in
charge prior to commencing gas-freeing operations, and show that—
(1) Each part of the barge’s vapor collection system is aligned to allow
vapor to flow to a cleaning facility’s
vapor control system (VCS);
(2) If a fluid displacement system is
used to conduct gas-freeing operations—
(i) The fluid supply line is connected
to the fluid injection connection; and
(ii) The maximum fluid injection rate
is determined in accordance with 46
CFR 39.6007(c)(2);
(3) The maximum stripping or gasfreeing rate is determined in accordance with 46 CFR 39.6003(c) or 39.6007(c),
respectively, and adequate openings required by 46 CFR 39.6007(c)(1) are available and identified;
(4) The pressure-sensing and pressure-indicating devices required by 33
CFR 154.2203 are connected as required
by 46 CFR 39.6003(b);
(5) The maximum and minimum operating pressures of the barge being
cleaned are determined;
(6) Unrepaired loose covers, kinks,
bulges, gouges, cuts, slashes, soft spots,
or any other defects which would permit the discharge of vapors through
the vapor recovery hose material must
be detected during inspection and repaired prior to operation;
(7) The facility vapor connection is
electrically insulated from the barge
vapor connection and the fluid injection connection is electrically insulated from the fluid injection source, if
fitted, in accordance with OCIMF
ISGOTT section 17.5 (incorporated by
reference, see 46 CFR 39.1005); and
(8) All equipment is bonded in accordance with 46 CFR 39.6001(h).
§ 39.6007 Operational requirements for
tank barge cleaning—B/ALL.
(a) During cleaning operations, vapors from a tank barge cannot be
transferred to a cleaning facility which
does not have a marine vapor control
system (VCS) certified by a certifying
entity, and its facility operations manual endorsed by the Captain of the Port

(COTP) as meeting the requirements of
33 CFR part 154, subpart P.
(b) Prior to commencing stripping
operations, the maximum allowable
stripping rate must be determined. The
maximum allowable stripping rate
must not exceed the volumetric flow
capacity of the vacuum relief valve
protecting the cargo tank.
(c) The maximum gas-freeing rate is
determined by the following:
(1) For a vacuum displacement system—
(i) The maximum allowable gas-freeing rate is a function of the area open
to the atmosphere for the cargo tank
being gas-freed. The area open to the
atmosphere must be large enough to
maintain the pressure in the cargo
tank being gas-freed at or above 14.5
pounds per square inch absolute (psia)
(¥0.2 pounds per square inch gauge
(psig));
(ii) The maximum allowable gas-freeing rate must be calculated from Table
1 of this section, using the area open to
the atmosphere for the cargo tank
being gas-freed as the entering determination;
(2) For a fluid displacement system,
the maximum allowable gas-freeing
rate is determined by the lesser of the
following:
(i) Eighty percent of the total venting capacity of the pressure relief valve
in the cargo tank venting system when
relieving at its set pressure;
(ii) Eighty percent of the total vacuum relieving capacity of the vacuum
relief valve in the cargo tank venting
system when relieving at its set pressure; or
(iii) The rate based on pressure drop
calculations at which, for a given pressure at the facility vapor connection,
the pressure in the cargo tank being
gas-freed exceeds 80 percent of the setting of any pressure relief valve in the
cargo tank venting system.
(d) Any hatch and/or fitting used to
calculate the minimum area required
to be open to the atmosphere must be
opened and secured in such a manner
as to prevent accidental closure during
gas freeing. All flame screens for the
hatch and/or fitting opened must be removed in order to allow for maximum
airflow. The hatch and/or fitting must
be secured open before the pressure in

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Coast Guard, DHS

§ 39.6009

the cargo tank falls below 10 percent of
the highest setting of any of the
barge’s vacuum relief valves.
(e) ‘‘Do Not Close Hatch/Fitting’’
signs must be conspicuously posted
near the hatch and/or fitting opened
during gas-freeing operations.
(f) To minimize the dangers of static
electricity, all equipment used on the
barge during gas-freeing and cleaning
operations must be electrically bonded
to the barge and tested to ensure electrical continuity before each use.

(g) If the barge is equipped with an
inert gas system, the inert gas main
isolation valve must remain closed
during cleaning operations.
(h) Vapors from incompatible cargoes
that are collected simultaneously must
be kept separated throughout the
barge’s entire vapor collection system.
Chemical compatibility must be determined in accordance with the procedures contained in 46 CFR part 150,
part A.

TABLE 1—MINIMUM OPEN AREA FOR BARGE CLEANING HATCHES
Air flow (CFS)
(cubic feet/
second)

Air flow (CFM)
(cubic feet/minute)
500 ........................................................................
600 ........................................................................
700 ........................................................................
800 ........................................................................
900 ........................................................................
1000 ......................................................................
1100 ......................................................................
1200 ......................................................................
1300 ......................................................................
1400 ......................................................................
1500 ......................................................................
1600 ......................................................................
1700 ......................................................................
1800 ......................................................................
1900 ......................................................................
2000 ......................................................................
2100 ......................................................................
2200 ......................................................................
2300 ......................................................................
2400 ......................................................................
2500 ......................................................................
2600 ......................................................................
2700 ......................................................................
2800 ......................................................................
2900 ......................................................................
3000 ......................................................................
3100 ......................................................................
3200 ......................................................................
3300 ......................................................................
3400 ......................................................................
3500 ......................................................................
3600 ......................................................................
3700 ......................................................................
3800 ......................................................................
3900 ......................................................................
4000 ......................................................................

Open area
(square inches)

8.3
10.0
11.7
13.3
15.0
16.7
18.3
20.0
21.7
23.3
25.0
26.7
28.3
30.0
31.7
33.3
35.0
36.7
38.3
40.0
41.7
43.3
45.0
46.7
48.3
50.0
51.7
53.3
55.0
56.7
58.3
60.0
61.7
63.3
65.0
66.7

§ 39.6009 Barge person in charge: Designation and qualifications—B/ALL.
The designation and qualification requirements contained in 33 CFR 155.700

Diameter
opening
(inches)

10.7
12.8
15.0
17.1
19.3
21.4
23.6
25.7
27.8
30.0
32.1
34.3
36.4
38.5
40.7
42.8
45.0
47.1
49.3
51.4
53.5
55.7
57.8
60.0
62.1
64.2
66.4
68.5
70.7
72.8
75.0
77.1
79.2
81.4
83.5
85.7

3.7
4.0
4.4
4.7
5.0
5.2
5.5
5.7
6.0
6.2
6.4
6.6
6.8
7.0
7.2
7.4
7.6
7.7
7.9
8.1
8.3
8.4
8.6
8.7
8.9
9.0
9.2
9.3
9.5
9.6
9.8
9.9
10.0
10.2
10.3
10.4

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3.3
3.6
3.9
4.1
4.4
4.6
4.9
5.1
5.3
5.5
5.7
5.9
6.0
6.2
6.4
6.5
6.7
6.9
7.0
7.2
7.3
7.5
7.6
7.7
7.9
8.0
8.1
8.3
8.4
8.5
8.7
8.8
8.9
9.0
9.1
9.3

and 33 CFR 155.710(a)(2) apply to the
barge person in charge.

PART 40 [RESERVED]

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