1625-0007 Stat/Authority

46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR Part 30 (June 3, 2024)

This content is from the eCFR and is authoritative but unofficial.

Title 46 —Shipping
Chapter I —Coast Guard, Department of Homeland Security
Subchapter D —Tank Vessels
Part 30 General Provisions
Subpart 30.01 Administration
§ 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.
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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR Part 30 (June 3, 2024)

§ 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 Scope and purpose.
§ 30.30-3 Evaluation materials.
§ 30.30-5 Submission of evaluation materials.
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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR Part 30 (June 3, 2024)

§ 30.30-7 Availability of materials.
§ 30.30-9 Evaluation.
§ 30.30-11 Determinations.

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.
Authority: 46 U.S.C. 2103, 3306, 3703; DHS Delegation 00170.1, Revision No. 01.3.
Source: CGFR 65-50, 30 FR 16657, Dec. 30, 1965, unless otherwise noted.

Subpart 30.01—Administration
§ 30.01-1 Purpose of regulations.
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. The regulations in this subchapter (parts 30, 31, 32, 34,
35, 36, 38 and 39) have preemptive effect over state or local regulations in the same fields.
[CGFR 68-32, 33 FR 5712, Apr. 12, 1968, as amended by USCG-2012-0196, 81 FR 48247, July 22, 2016]

§ 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)

1625-0038

§ 31.10-21

1625-0032

§ 31.10-22

1625-0032

§ 31.10-32

1625-0038

§ 31.10-33

1625-0038

§ 31.37-15

1625-0038

§ 31.40-35

1625-0038

§ 35.20-7

1625-0064

§ 35.35-30

1625-0039

46 CFR 30.01-2(b) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR part or section where identified or described
§ 39.10-13

46 CFR 30.01-3

Current OMB control No.
1625-0038

[49 FR 38120, Sept. 27, 1984, as amended by CGD 89-037, 57 FR 41821, Sept. 11, 1992; USCG-2004-18884, 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/federal_register/code_of_federal_regulations/
ibr_locations.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:
(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

46 CFR 30.01-5(a)(2)(i) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
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46 CFR 30.01-5(a)(2)(ii)

(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 oil-drilling-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.

46 CFR 30.01-5(e)(1) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
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46 CFR 30.01-5(e)(2)

(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 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.govinfo.gov.

§ 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.

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46 CFR Part 30 (up to date as of 6/03/2024)
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46 CFR 30.01-6(d)

(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; USCG-2001-10224, 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, or in accordance with the regulations in
effect for new construction insofar as possible.

§ 30.01-15 Effective date of regulations—TB/ALL.
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.
[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
§ 30.10-1 Definition of terms—TB/ALL.
Certain terms used in the regulations in this subchapter are defined in this subpart.

§ 30.10-2 Accommodation space—TB/ALL.
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]

§ 30.10-2a 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.
46 CFR 30.10-2a (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
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46 CFR 30.10-3

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

§ 30.10-3 Approved—TB/ALL.
The term approved means approved by the Commandant unless otherwise stated.

§ 30.10-5 Cargo—TB/ALL.
The term cargo means combustible liquid, flammable liquid, or liquefied flammable gas unless otherwise stated.

§ 30.10-5a 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 Cargo control station—TB/ALL.
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]

§ 30.10-6 Cargo handling room—TB/ALL.
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 A machinery space—TB/ALL.
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]

46 CFR 30.10-6a(d) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
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46 CFR 30.10-7

§ 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.
46 CFR 30.10-19 (enhanced display)

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46 CFR 30.10-19a

[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 Deadweight or DWT—TB/ALL.
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 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 Reid1 vapor pressure under 14 pounds and over 81⁄2 pounds.
(c) Grade C. Any flammable liquid having a Reid1 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.

[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).
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46 CFR 30.10-25

§ 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.)

80

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

75

150

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]
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46 CFR 30.10-38

§ 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]

§ 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]

§ 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 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.
46 CFR 30.10-47 (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR 30.10-48

[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.

§ 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 Reid vapor pressure—TB/ALL.
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.
46 CFR 30.10-59 (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR 30.10-61

[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 self-propelled 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.
[CGD 74-127, 41 FR 3843, Jan. 26, 1976]

§ 30.10-63 Spark arrester—TB/ALL.
The term spark arrester means any device, assembly, or method of a mechanical, centrifugal, cooling, or other type
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 nonself-propelled 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.
46 CFR 30.10-69(c) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR 30.10-71

[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
§ 30.15-1 Conditions under which equivalents may be used—TB/ALL.
(a) Where in this subchapter it is provided that a particular fitting, material, appliance, apparatus, or
equipment, or type thereof, shall be fitted or 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.
(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.

46 CFR 30.25-1(b) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR 30.25-1(c)

(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 cargoes 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 if the
cargo is listed in 33 CFR 151.49; or
(3) Under 33 CFR part 151 if the cargo is listed in 33 CFR 151.47.

Table 30.25-1—List of Flammable and Combustible Bulk Liquid Cargoes
[See NOTES at the end of this table for an explanation of symbols and terms used in this table. See
Table 2, 46 CFR part 153, for additional cargoes that may be carried by a tank barge.]

Cargo name

IMO
Annex II
pollution
category

Acetochlor

X

Acetone

Z

Acetophenone

#

Acrylic acid/ethenesulphonic acid copolymer with phosphonate groups, sodium salt solution

Z

Acrylonitrile-Styrene copolymer dispersion in polyether polyol

Y

Alcohol (C6-C17) (secondary) poly(3-6) ethoxylates

Y

Alcohol (C6-C17) (secondary) poly(7-12) ethoxylates

Y

Alcohol (C9-C11) poly(2.5-9) ethoxylate

Y

Alcohol (C10-C18) poly (7) ethoxylates

Y

Alcohol (C12-C15) poly( . . . ) ethoxylates, see Alcohol (C12-C16) poly( . . . ) ethoxylates.
Alcohol (C12-C16) poly(1-6) ethoxylates

Y

Alcohol (C12-C16) poly(7-19) ethoxylates

Y

Alcohol (C12-C16) poly(20+) ethoxylates

Y

Alcohols (C13 + )

Y

Alcoholic beverages, n.o.s.

Z

Aliphatic oil

I

Alkanes (C6-C9)

X

Iso- and cyclo-alkanes (C10-C11)

Y

Iso- and cyclo-alkanes (C12 + )

Y

n-Alkanes (C10 + )

Y

Alkaryl polyethers (C9-C20)

Y

Alkenyl (C11+) amide

X

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Alkenyl (C8+) amine, Alkenyl (C12+) acid ester mixture

#

Alkenyl (C16-C20) succinic anhydride

Z

Alkyl acrylate-Vinylpyridine copolymer in toluene

Y

Alkylbenzene, Alkylindane, Alkylindene mixture (each C12-C17)

Z

Alkyl (C3-C4) benzenes

Y

Alkyl (C5-C8) benzenes

X

Alkyl (C9+) benzenes

Y

Alkyl (C11-C17) benzene sulfonic (alternately sulphonic) acid

Y

Alkylbenzene sulfonic (alternately sulphonic) acid (4% or less)

#

Alkylbenzenes mixtures (containing naphthalene)

X

Alkyl/cyclo (C4-C5) alcohols

Y

Alkyl dithiocarbamate (C19-C35)

Y

Alkyl dithiothiadiazole (C6-C24)

Y

Alkyl ester copolymer (C4-C20)

Y

Alkyl (C7-C11) phenol poly(4-12) ethoxylate

Y

Alkyl phenol sulfide (alternately sulphide) (C8-C40), see Alkyl (C8-C40) phenol sulfide (alternately
sulphide).
Alkylphenols (C10-C18, C12 rich)

Y

Alkyl (C10-C15, C12 rich) phenol poly (4-12) ethoxylate

Y

Alkyl (C8-C40) phenol sulfide (alternately sulphide)

Z

Alkyl (C8-C9) phenylamine in aromatic solvents

Y

Alkyl (C9-C15) phenyl propoxylate

Z

Alkyl (C8-C10) polyglucoside solution (65% or less)

Y

Alkyl (C12-C14) polyglucoside solution (55% or less)

Y

Alkyl (C8-C10)/(C12-C14):(40% or less/60% or more) polyglucoside solution (55% or less)

Y

Alkyl (C8-C10)/(C12-C14):(60% or more/40% or less) polyglucoside solution (55% or less)

Y

Alkyl (C8-C10)/(C12-C14):(50%/50%) polyglucoside solution (55% or less)

Y

Alkyl (C10-C20, saturated and unsaturated) phosphite

Y

n-Alkyl phthalates, see individual phthalates.
Alkyl sulfonic (alternately sulphonic) acid ester of phenol

Y

Aluminum (alternately, Aluminium) hydroxide, sodium

Y

Aminoethyldiethanolamine/Aminoethylethanolamine solution

Z

2-Amino-2-methyl-1-propanol

Z

Amyl acetate (all isomers)

Y

Amyl alcohol (iso-, n-, sec-, primary, tert-)

Z

tert-Amyl ethyl ether

Z

tert-Amyl methyl ether

X

Amyl methyl ketone, see Methyl amyl ketone.
46 CFR 30.25-1(d)(3) (enhanced display)

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General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

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

I

Aryl polyolefins (C11-C50)

Y

Asphalt

I

Asphalt blending stocks:
Roofers flux

I

Straight run residue

I

Aviation alkylates (C8 paraffins and isoparaffins BPT 95 to 120 °C)

X

Barium long-chain (C11-C50) alkaryl sulfonate (alternately sulphonate)

Y

Barium long-chain alkyl (C8-C14) phenate sulfide (alternately sulphide)

#

Beechnut oil

#

Behenyl alcohol, see Alcohols (C13+).
Benzene tricarboxylic acid, trioctyl ester

Y

Benzyl acetate

Y

Benzyl alcohol

Y

Bis(2-ethylhexyl) terephthalate

Y

Brake fluid base mix: Poly(2-8)alkylene(C2-C3) glycols/Polyalkylene(C2-C10) glycols
monoalkyl(C1-C4) ethers and their borate esters

Z

Butane

LFG

Butene, see Butylenes (all isomers).
Butene oligomer

X

2-Butoxyethanol (58%)/Hyperbranched polyesteramide (42%) (mixture)

Y

Butyl acetate (all isomers)

Y

Butyl alcohol (iso-, n-, sec-, tert-), see Butyl alcohol (all isomers)
Butyl alcohol (all isomers)

Z

Butylbenzene (all isomers), see Alkyl (C3-C4) benzenes.
Butyl benzyl phthalate

X

Butyl butyrate (all isomers)

Y

Butylene
Butylene glycol

LFG
Z

1,3-Butylene glycol, see Butylene glycol.
iso-Butyl formate, see Isobutyl formate.
n-Butyl formate

#

Butyl heptyl ketone

#

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Butyl methyl ketone, see Methyl butyl ketone
n-Butyl propionate

Y

Butyl stearate

#

Butyl toluene

#

gamma-Butyrolactone

Y

Calcium alkyl (C9) phenol sulfide (alternately sulphide), polyolefin phosphorosulfide (alternately
phosphorosulphide) mixture

#

Calcium alkyl salicylate, see Calcium long-chain alkyl salicylate (C13+)
Calcium long-chain alkaryl sulfonate (alternately sulphonate) (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

Y

Calcium long-chain alkyl (C11-C40) phenate

Y

Calcium long-chain alkyl phenolic amine (C8-C40)

#

Calcium long-chain alkyl salicylate (C13+)

Y

Camelina oil

Y

Candelilla wax, see Waxes: Candelilla.
Caprolactam solutions, see epsilon-Caprolactam (molten or aqueous solutions)
epsilon-Caprolactam (molten or aqueous solutions)

Z

Carnauba wax, see Waxes: Carnauba.
Cetyl alcohol (Hexadecanol), see Alcohols (C13+).
Cetyl/Stearyl alcohol, see Alcohols (C13+).
Chlorinated paraffins (C10-C13)

X

1-(4-Chlorophenyl)-4,4-dimethyl-pentan-3-one

Y

Citric acid (70% or less)

Z

Clarified oil

I

Coal oil

#

Coconut oil fatty acid methyl ester

Y

Cod liver oil

#

Copper salt of long-chain (C17 + ) alkanoic acid

Y

Corn acid oil

#

Cotton seed acid oil

#

Cottonseed, fatty acid, see Cottonseed oil, fatty acid.
Cottonseed oil, fatty acid

#

Cresol/Phenol/Xylenol mixture

Y

Crude Isononylaldehyde

#

Crude Isopropanol
† Crude oil
46 CFR 30.25-1(d)(3) (enhanced display)

@Z
I
page 19 of 39

46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Cumene, see Alkyl (C3-C4) benzenes.
Cycloheptane

X

Cyclohexane

Y

Cyclohexane-1,2-dicarboxylic acid, diisononyl ester

Y

Cyclohexanol

Y

Cyclohexyl acetate

Y

1,3-Cyclopentadiene dimer (molten)

Y

Cyclopentane

Y

Cyclopentene

Y

p-Cymene

Y

Dark mixed acid oil

#

Decahydronaphthalene

Y

iso-Decaldehyde, see Isodecaldehyde.
n-Decaldehyde

#

Decane, see n-Alkanes (C10+).
Decanoic acid

X

Decene

X

Decyl acetate

#

Decyl alcohol (all isomers)

Y

n-Decylbenzene, see Alkyl (C9+) benzenes.
Detergent alkylate, see Alkyl (C9+) benzenes.
Di+, see Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether acetate.
Diacetone alcohol

Z

Dialkyl (C10-C14) benzenes, see Alkyl (C9+) benzenes.
Dialkyl (C8-C9) diphenylamines

Z

Dialkyl (C7-C13) phthalates

X

Including:
Diisodecyl phthalate
Diisononyl phthalate
Dinonyl phthalate
Ditridecyl phthalate
Diundecyl phthalate
Dibutyl carbinol, see Nonyl alcohol (all isomers)
Dibutyl hydrogen phosphonate

Y

2,6-Di-tert-butylphenol

X

Dibutyl phthalate

X

ortho-Dibutyl phthalate, see Dibutyl phthalate
Dibutyl terephthalate
46 CFR 30.25-1(d)(3) (enhanced display)

Y
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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Dicyclopentadiene, see 1,3-Cyclopentadiene dimer (molten)
Diesel oil

I

Diethylbenzene

Y

Diethylene glycol

Z

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

Z

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

Y

Diethylene glycol propyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether.
Di-(2-ethylhexyl)adipate

Y

Di-(2-ethylhexyl)phthalate, see Dioctyl phthalate
Diethyl phthalate

Y

Diglycidyl ether of bisphenol A

X

Diglycidyl ether of bisphenol F

Y

Diheptyl phthalate, see Dialkyl (C7-C13) phthalates.
Di-n-hexyl adipate

X

Dihexyl phthalate

Y

Diisobutyl carbinol, see Nonyl alcohol (all isomers)
Diisobutylene

Y

Diisobutyl ketone

Y

Diisobutyl phthalate

X

Diisodecyl phthalate, see Dialkyl(C7-C13) phthalates
Diisononyl adipate

Y

Diisononyl phthalate, see Dialkyl (C7-C13) phthalates.
Diisooctyl phthalate

Y

Diisopropylbenzene (all isomers)

X

Diisopropylnaphthalene

Y

Dimethyl adipate

X

Dimethylbenzene, see Xylenes
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General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Dimethyl glutarate

Y

Dimethyl octanoic acid

Y

Dimethyl phthalate

Y

Dimethylpolysiloxane

Y

2,2-Dimethylpropane-1,3-diol (molten or solution)

Z

Dimethyl succinate

Y

Dinonyl phthalate, see Dialkyl (C7-C13) phthalates.
Dioctyl phthalate, see Dialkyl (C7-C13) phthalates.
Dipentene

Y

Diphenyl

X

Diphenylamine (molten)

Y

Diphenylamines, alkylated

Y

Diphenyl/Diphenyl ether mixtures

X

Diphenyl ether

X

Diphenyl ether/Diphenyl phenyl ether mixture

X

Diphenylol propane-epichlorohydrin resins

X

Dipropylene glycol

Z

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)

X

Distillates:
Flashed feed stocks

I

Straight run

I

Diundecyl phthalate

Y

Dodecane (all isomers)

Y

Dodecanol (all isomers), see Dodecyl alcohol (all isomers).
Dodecene (all isomers)

X

1-Dodecene

Y

Dodecyl alcohol

Y

Dodecyl benzene, see Alkyl (C9+) benzenes.
Dodecyl hydroxypropyl sulfide (alternately sulphide).

X

n-Dodecyl mercaptan

X

Dodecyl phenol

X

Dodecyl xylene

Y

Drilling brines (containing zinc salts) (if flammable or combustible)

X

Drilling brines, including: calcium bromide solution, calcium chloride solution and sodium
chloride solution (if flammable or combustible)

Z

46 CFR 30.25-1(d)(3) (enhanced display)

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General Provisions

Cargo name

Drilling mud (low toxicity) (if flammable or combustible)

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category
#

ETBE, see Ethyl tert-butyl ether.
Ethane

LFG

Ethoxy triglycol (crude)

#

2-Ethoxyethyl acetate

Y

Ethoxylated alkyloxy alkyl amine, see Ethoxylated long-chain (C16+) alkyloxyalkylamine.
Ethoxylated long-chain (C16+) alkyloxyalkylamine

Y

Ethyl acetate

Z

Ethyl acetoacetate

Z

Ethyl alcohol

Z

Ethyl amyl ketone

Y

Ethylbenzene

Y

Ethyl butanol

#

Ethyl tert-butyl ether

Y

Ethyl butyrate

Y

Ethyl cyclohexane

Y

S-Ethyl dipropylthiocarbamate

Y

Ethylene

LFG

Ethylene carbonate

Z

Ethylene glycol

Y

Ethylene glycol acetate

Y

Ethylene glycol butyl ether acetate

Y

Ethylene glycol diacetate

Y

Ethylene glycol dibutyl ether

#

Ethylene glycol ethyl ether acetate, see 2-Ethoxyethyl acetate
Ethylene glycol methyl butyl ether

#

Ethylene glycol methyl ether acetate

Y

Ethylene glycol phenyl ether

Z

Ethylene glycol phenyl ether/Diethylene glycol phenyl ether mixture

Z

Ethylene glycol (>75%)/Sodium alkyl carboxylates/borax mixture

Y

Ethylene glycol (>85%)/Sodium alkyl carboxylates mixture

Z

Ethyl-3-ethoxypropionate

Y

2-Ethylhexaldehyde, see Octyl aldehydes
2-Ethylhexanoic acid

Y

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

Y

46 CFR 30.25-1(d)(3) (enhanced display)

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General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Ethyl propionate

Y

Ethyl toluene

Y

Fatty acid (saturated, C13 + )

Y

Fatty acids (C16+)

Y

Fatty acids, essentially linear (C6-C18) 2-ethylhexyl ester

Y

Fish acid oil

#

Formamide

Y

Furfuryl alcohol

Y

† Gas oil, cracked

I

Gas oil, high pour

I

Gas oil, low pour

I

Gas oil, low sulfur (alternately sulphur)

I

Gasoline blending stocks:
Alkylates

I

† Reformates

I

Gasolines:
† Automotive (containing not more than 4.23 grams lead per gallon)

I

† Aviation (containing not more than 4.86 grams lead per gallon)

I

Casinghead (natural)

I

Polymer

I

† Straight run

I

Gasoline (Natural gas condensate)

I

Glucitol/Glycerol blend propoxylated (containing less than 10% amines)

Y

Glucitol/Glycerol blend propoxylated (containing 10% or more amines)

Z

Glycerine

Z

Glycerine (83%), Dioxanedimethanol (17%) mixture

#

Glycerol, see Glycerine
Glycerol ethoxylated

OS

Glycerol monooleate

Y

Glycerol polyalkoxylate

#

Glycerol, propoxylated and ethoxylated

Z

Glycerol/sucrose blend, propoxylated and ethoxylated

Z

Glyceryl triacetate

Z

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

Y

Glycol diacetate, see Ethylene glycol diacetate
Glycol triacetate, see Glyceryl triacetate
46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Glyoxal solution (40% or less)

Y

Glyphosate solution (not containing surfactant)

Y

Grape seed oil

Y

Groundnut acid oil

#

Groundnut oil

Y

Hazelnut oil

#

Heartcut distillate

I

Heptadecane, see n-Alkanes (C10+).
Heptane (all isomers)

X

Heptanoic acid, see n-Heptanoic acid.
n- Heptanoic acid

Z

Heptanol (all isomers)

Y

Heptene (all isomers)

Y

Heptyl acetate

Y

Herbicide (C15H22NO2Cl), see N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methylchloroacetanilide
Hexadecanol (Cetyl alcohol), see Alcohols (C 13+).
1-Hexadecylnaphthalene/1,4-Bis(hexadecyl)naphthalene mixture

Y

Hexaethylene glycol, see Polyethylene glycol
Hexahydro-1,3,5-trimethyl-1,3,5-triazine solution (45% or less)

Y

Hexamethylene glycol

Z

Hexamethylenetetramine solutions

Z

Hexane (all isomers)

Y

1,6-Hexanediol, distillation overheads

Y

Hexanoic acid

Y

Hexanol

Y

Hexene (all isomers)

Y

Hexyl acetate

Y

Hexylene glycol

Z

Hydrogenated starch hydrolysate
2-Hydroxy-4-(methylthio)butanoic acid

OS
Z

Hydroxyl terminated polybutadiene, see Polybutadiene, hydroxyl terminated.
Illipe oil

Y

Isoamyl alcohol

Z

Isobutyl alcohol

Z

Isobutyl formate

Z

Isobutyl methacrylate

Z

Isodecaldehyde

#

Isophorone

Y

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Isopropyl acetate

Z

Isopropyl alcohol

Z

Isopropylbenzene, see Alkyl (C3-C4) benzenes.
Isopropylcyclohexane
Jatropha oil

@Y
Y

Jet fuels:
† JP-4

I

JP-5 (kerosene, heavy)

I

JP-8

I

Kerosene

I

Lactic acid

Z

Lanolin oil

#

Lard oil

#

Latex, ammonia (1% or less)-inhibited

Y

Latex: Carboxylated styrene-Butadiene copolymer; Styrene-Butadiene rubber

Z

Lauric acid

X

Lecithin

OS

Linseed oil

Y

Long-chain alkaryl polyether (C11-C20)

Y

Long-chain alkaryl sulfonic (alternately sulphonic) acid (C16-C60)

Y

Long-chain alkylphenate/Phenol sulfide (alternately sulphide) mixture

Y

Long-chain alkylphenol (C14-C18)

Y

Long-chain alkylphenol (C18-C30)

Y

Lubricating oil

I

L-Lysine solution (60% or less)

Z

Magnesium long-chain alkaryl sulfonate (alternately sulphonate) (C11-C50)

Y

Magnesium long-chain alkyl phenate sulfide (alternately sulphide) (C8-C20)

#

Magnesium long-chain alkyl salicylate (C11 + )

Y

Magnesium nonyl phenol sulfide (alternately sulphide), see Magnesium long-chain alkyl phenate
sulfide (alternately sulphide) (C8-C20).
Maleic anhydride/sodium allylsulphonate copolymer solution

Z

Mango kernel oil

Y

2-Mercaptobenzothiazol (in liquid mixtures)

#

Methane

LFG

3-Methoxy-1-butanol

Z

3-Methoxybutyl acetate

Y

1-Methoxy-2-propyl acetate

#

N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methylchloroacetanilide

X

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Methoxy triglycol, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether.
Methyl acetate

Z

Methyl acetoacetate

Z

Methyl alcohol

Y

Methylamyl acetate

Y

Methylamyl alcohol

Z

Methyl amyl ketone

Z

Methyl butanol, see amyl alcohols.
Methylbutenol

Y

Methyl tert-butyl ether

Z

Methyl butyl ketone

Y

Methylbutynol

Z

Methyl butyrate

Y

Methylcyclohexane

Y

Methylcyclopentadiene dimer

Y

Methyl 3-(3,5 di-tert-butyl-4-hydroxyphenyl)propionate crude melt

[Y]

Methyl ethyl ketone

Z

Methyl formate

Z

N-Methylglucamine solution

Z

2-Methylglutaronitrile with 2-Ethylsuccinonitrile (12% or less)

Z

Methyl heptyl ketone

#

2-Methyl-2-hydroxy-3-butyne

Z

Methyl isobutyl carbinol, see Methyl amyl alcohol
Methyl isobutyl ketone

Z

3-Methyl-3-methoxybutanol

Z

3-Methyl-3-methoxybutyl acetate

#

Methyl naphthalene (molten)

X

Methyl pentene, see Hexene (all isomers)
Methyl tert-pentyl ether, see tert-Amyl methyl ether
2-Methyl-1,3-propanediol

Z

Methyl propyl ketone

Z

2-Methylpyridine

Z

3-Methylpyridine

Z

4-Methylpyridine

Z

N-Methyl-2-pyrrolidone

Y

Methyl salicylate

Y

Metolachlor, see N-(2-Methoxy-1-methylethyl)-2-ethyl-6-methylchloroacetanilide
Mineral oil
46 CFR 30.25-1(d)(3) (enhanced display)

I
page 27 of 39

46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Mineral seal oil

I

Mineral spirits

I

Mixed acid oil

#

Mixed general acid oil

#

Mixed hard acid oil

#

Mixed soft acid oil

#

Motor oil

I

MTBE, see Methyl tert-butyl ether
Myrcene

X

Naphtha:
† Aromatic (having less than 10% Benzene)

I

Heavy

I

Paraffinic

I

† Petroleum

I

† Solvent

I

Stoddard Solvent

I

† Varnish makers' and painters' (75%)

I

Naphthenic acid

#

Naphthalene crude (molten)

Y

Neatsfoot oil

#

Neodecanoic acid

Y

Nitrilotriacetic acid, trisodium salt solution

Y

Nitroethane

Y

Nitroethane (80%)/Nitropropane (20%)

Y

Nitroethane/1-Nitropropane (each 15% or more) mixture

Y

Nitropropane (60%)/Nitroethane (40%) mixture

Y

Nonane (all isomers)

X

Nonanoic acid (all isomers)

Y

Nonanoic/Tridecanoic acid mixture

#

Nonene (all isomers)

Y

Nonyl acetate

#

Nonyl alcohol (all isomers)

Y

Nonyl methacrylate monomer

Y

Nonylphenol

X

Nonylphenol poly(4 + )ethoxylate

Y

Nonyl phenol sulfide (alternately sulphide) (90% or less), see Alkyl (C8-C40) phenol sulfide
(alternately sulphide).
Noxious liquid, F, (2) n.o.s. (“trade name” contains “principal components”) ST 1, Cat X
46 CFR 30.25-1(d)(3) (enhanced display)

X
page 28 of 39

46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Noxious liquid, F, (4) n.o.s. (“trade name” contains “principal components”) ST 2, Cat X

X

Noxious liquid, F, (6) n.o.s. (“trade name” contains “principal components”) ST 2, Cat Y

Y

Noxious liquid, F, (8) n.o.s. (“trade name” contains “principal components”) ST 3, Cat Y

Y

Noxious liquid, F, (10) n.o.s. (“trade name” contains “principal components”) ST 3, Cat Z

Z

Noxious liquid, (11) n.o.s. (“trade name” contains “principal components”) Cat Z (if flammable
or combustible)

Z

Non noxious liquid, (12) n.o.s. (“trade name” contains “principal components”) Cat OS (if
flammable or combustible)
Nutmeg butter oil

OS
#

Octadecanol (Oleyl alcohol), see Alcohols (C13+).
Octadecene, see the olefin or alpha-olefin entries.
Octadeceneamide solution

#

Octamethylcyclotetrasiloxane

Y

Octane (all isomers)

X

Octanoic acid (all isomers)

Y

Octanol (all isomers)

Y

Octene (all isomers)

Y

Octyl acetate, see n-Octyl acetate
n-Octyl acetate

Y

Octyl alcohol (iso-, n-), see Octanol (all isomers)
Octyl aldehydes

Y

Octyl decyl adipate

Y

Octyl phthalate, see Dioctyl phthalate.
Offshore contaminated bulk liquid P (Pollution-only products)

X

Offshore contaminated bulk liquid S (Safety hazard products)

X

Oil, fuel:
No. 1 (kerosene)

I

No. 1-D

I

No. 2

I

No. 2-D

I

No. 4

I

No. 5

I

No. 6

I

Oil, misc.:
Used cooking oil

X

Used cooking oil (triglycerides, C16-C18 and C18 unsaturated)

Y

Oiticica oil

#

alpha-Olefins (C6-C18) mixtures

X

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

alpha-Olefins (C13-C18) mixtures, see alpha-Olefins (C6-C18)
Olefins (C13 + , all isomers)

Y

Olefin-Alkyl ester copolymer (molecular weight 2000 + )

Y

Olefin mixture (C7-C9) C8 rich, stabilized

X

Olefin mixtures (C5-C7)

Y

Olefin mixtures (C5-C15)

X

Oleic acid

Y

Oleyl alcohol (Octadecanol), see Alcohols (C13+).
Olive oil
Orange juice (concentrated)

Y
OS

Palm kernel acid oil, methyl ester

#

Palm kernel fatty acid distillate

Y

Palm kernel olein

Y

Palm kernel stearin

Y

Palm mid-fraction

Y

Palm oil

Y

Palm oil fatty acid methyl ester

Y

Palm olein

Y

Palm stearin

Y

Paraffin wax, see Waxes: Paraffin.
n-Paraffins (C10-C20), see n-Alkanes (C10+) all isomers.
Paraldehyde-ammonia reaction product

Y

Peanut oil, see Groundnut oil.
Peel oil (oranges and lemons)

#

Penetrating oil

I

Pentadecanol, see Alcohols (C13+).
1,3-Pentadiene

Y

1,3-Pentadiene (greater than 50%), cyclopentene and isomers, mixtures

Y

Pentaethylene glycol, see Polyethylene glycols
Pentane (all isomers)

Y

Pentanoic acid

Y

Pentene (all isomers)

Y

n-Pentyl propionate

Y

Perilla oil

#

Petrolatum

Y

1-Phenyl-1-xylyl ethane

Y

Phosphate esters, alkyl (C12-C14) amine

Y

Phosphosulfurized (alternately Phosphosulphurized) bicyclic terpene

#

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

Pilchard oil

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category
#

Pinene, see the alpha- or beta- isomers.
alpha-Pinene

X

beta-Pinene

X

Pine oil

X

Piperazine (70% or less)

Y

Polyalkyl (C18-C22) acrylate in xylene

Y

Polyalkylene glycols, polyalkylene glycol monoalkyl ethers mixtures

#

Polyalkylalkenaminesuccinimide, molybdenum oxysulfide (alternately oxysulphide)

Y

Polyalkylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether.
Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether

Z

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

Y

Including:
Diethylene glycol butyl ether acetate
Diethylene glycol ethyl ether acetate
Diethylene glycol methyl ether acetate
Polyalkylene oxide polyol

#

Polyalkyl (C10-C20) methacrylate

Y

Polyalkyl (C10-C18) methacrylate/Ethylene-propylene copolymer mixture

Y

Polybutadiene, hydroxyl terminated

#

Polybutene

Y

Polybutenyl succinimide

Y

Poly(2+)cyclic aromatics

X

Polydimethylsiloxane, see Dimethylpolysiloxane
Polyether (molecular weight 1350 + )
46 CFR 30.25-1(d)(3) (enhanced display)

Y
page 31 of 39

46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Polyether polyols

#

Polyethylene glycol

Z

Polyethylene glycol dimethyl ether

Z

Poly(ethylene glycol) methylbutenyl ether (molecular weight >1000)

Z

Polyethylene glycol monoalkyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether.
Polyglycerine, sodium salt solution (containing less than 3% sodium hydroxide)

Z

Polyglycerol

#

Polyisobutenamine in aliphatic (C10-C14) solvent

Y

Polyisobutenyl anhydride adduct

Z

Poly(4+)isobutylene (molecular weight >224)

X

Polyisobutylene (molecular weight ≤224)

Y

Polymerized esters

#

Polyolefin (molecular weight 300+)

Y

Polyolefin amide alkeneamine (C17 + )

Y

Polyolefin amide alkeneamine (C28+), see Polyolefin amide alkeneamine (C17+).
Polyolefin amide alkeneamine borate (C28-C250)

Y

Polyolefin amide alkeneamine/Molybdenum oxysulfide (alternately oxysulphide) mixture

#

Polyolefin amide alkeneamine polyol

Y

Polyolefinamine (C17+)

Y

Polyolefinamine (C28-C250)

Y

Polyolefinamine in alkyl (C2-C4) benzenes

Y

Polyolefinamine in aromatic solvent

Y

Polyolefin aminoester salts (molecular weight 2000+)

Y

Polyolefin anhydride

Y

Polyolefin ester (C28-C250)

Y

Polyolefin phenolic amine (C28-C250)

Y

Polyolefin phosphorosulfide (alternately phosphorosulphide), barium derivative (C28-C250)

Y

Poly(20)oxyethylene sorbitan monooleate

Y

Poly(5 + )propylene

Y

Polypropylene glycol

Z

Polypropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether
Polysiloxane

Y

Poppy oil

#

Poppy seed oil

#

Potassium oleate

Y

Potassium salt of polyolefin acid

#

Propane
2-Propene-1-aminium, N, N-dimethyl-N-2-propenyl-, chloride, homopolymer solution
46 CFR 30.25-1(d)(3) (enhanced display)

LFG
Y
page 32 of 39

46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

Propionaldehyde

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category
Y

n-Propoxypropanol, see Propylene glycol monoalkyl ether
n-Propyl acetate

Y

n-Propyl alcohol

Y

iso-Propylbenzene, see Propylbenzene (all isomers)
n-Propylbenzene, see Propylbenzene (all isomers)
Propylbenzene (all isomers), see Alkyl(C3-C4) benzenes.
iso-Propylbenzene, see Alkyl(C3-C4) benzenes.
n-Propylbenzene, see Alkyl(C3-C4) benzenes.
iso-Propylcyclohexane, see Isopropylcyclohexane.
Propylene

LFG

Propylene-Butylene copolymer

#

Propylene carbonate

Z

Propylene dimer

#

Propylene glycol

Z

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

Z

Propylene glycol monoalkyl ether

Z

Including:
n-Propoxypropanol
Propylene glycol n-butyl ether
Propylene glycol ethyl ether
Propylene glycol methyl ether
Propylene glycol propyl ether
Propylene glycol phenyl ether

Z

Propylene glycol propyl ether, see Propylene glycol monoalkyl ether
Propylene polymer (in liquid mixtures)

#

Propylene tetramer

X

Propylene trimer

Y

Pseudocumene, see Trimethylbenzenes
Pseudocumene, see Trimethylbenzenes (all isomers).
Raisin seed oil

#

Rapeseed acid oil

#

Rapeseed oil

Y

Rapeseed oil fatty acid methyl esters

Y

Residual oil

I

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Rice bran oil

Y

Road oil

I

Rosin, see Rosin oil.
Rosin oil

Y

Rum, see Alcoholic beverages, n.o.s.
Safflower acid oil

#

Safflower oil

Y

Salad oil

#

Seal oil

I

Sesame oil

#

Soapstock oil

#

Sodium acetate, Glycol, Water mixture (containing 1% or less, Sodium hydroxide) (if flammable
or combustible)

#

Sodium benzoate

Z

Sodium bromide solution (less than 50%)

Y

Sodium carboxylate solution

Y

Sodium long-chain alkyl salicylate (C13 + )

#

Sodium methylate 21 to 30% in methanol

Y

Sodium thiocyanate solution (56% or less)

Y

Soya acid oil

#

Soyabean oil

Y

Soyabean oil (epoxidized)

#

Soyabean oil fatty acid methyl ester

Y

Spindle oil

I

Stearic acid, see Fatty acid (saturated, C13 + )
Stearyl alcohol, see Alcohols (C13 + )
Sulfohydrocarbon (alternately Sulphohydrocarbon) (C3-C88)

Y

Sulfohydrocarbon (alternately Sulphohydrocarbon), long-chain (C18+) alkylamine

#

Sulfolane (alternately Sulpholane)

Y

Sulfurized (alternately Sulphurized) fat (C14-C20)

Z

Sulfurized (alternately Sulphurized) polyolefinamide alkene(C28-C250) amine

Z

Sunflower oil, see Sunflower seed acid oil
Sunflower seed acid oil

#

Tall oil, crude

Y

Tall oil, distilled

Y

Tall oil, fatty acid

#

Tall oil pitch

Y

Tall oil soap, crude

Y

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

Tallow

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category
Y

Tallow alcohol, see Alcohols (C13 + )
Tallow alkyl nitrile

#

Tallow fatty acid

Y

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

Z

Tetraethyl silicate monomer/oligomer (20% in ethanol)

Z

Tetrahydronaphthalene

Y

Tetramethylbenzene (all isomers)

X

Tetrapropylbenzene, see Alkyl(C9 + )benzenes
Toluene

Y

Transformer oil

I

Triarylphosphate, see Triisopropylated phenyl phosphates
Tributyl phosphate

Y

Tricresyl phosphate (less than 1% ortho isomer)

Y

Tridecane, see n-Alkanes (C10+) (all isomers).
Tridecanoic acid

Y

Tridecanol, see Alcohols (C13 + )
Tridecene, see Olefins (C13 + , all isomers)
Tridecyl acetate

Y

Tridecylbenzene, see Alkyl (C9+) benzenes.
Triethylbenzene

X

Triethylene glycol

Z

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

Z

Triisooctyl trimellitate

#

Triisopropanolamine

Z

Triisopropylated phenyl phosphates

X

Trimethylamine solution (30% or less)

Z

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Trimethylbenzene (all isomers)

X

2,2,4-Trimethyl-1,3-pentanediol diisobutyrate

Y

2,2,4-Trimethyl-1,3-pentanediol-1-isobutyrate

Y

2,2,4-Trimethyl-3-pentanol-1-isobutyrate

#

1,3,5-Trioxane

Y

Tripropylene, see Propylene trimer
Tripropylene glycol

Z

Tripropylene glycol methyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1-C6) ether.
Trixylenyl phosphate, see Trixylyl phosphate
Trixylyl phosphate

X

Tucum oil

#

Tung oil

Y

Turbine oil

I

Turpentine

X

† Turpentine substitute, see White spirit (low (15-20%) aromatic)
Undecanoic acid

Y

1-Undecanol, see Undecyl alcohol
Undecene, see 1-Undecene
1-Undecene

X

1-Undecyl alcohol, see Undecyl alcohol
Undecyl alcohol

X

Undecylbenzene, see Alkyl (C9+) benzenes.
Vegetable acid oils, n.o.s.:
Vegetable oil mixtures, containing less than 15% free fatty acid (m)

Y

Vegetable oils, n.o.s.
Vegetable protein solution (hydrolyzed) (if flammable or combustible)

OS

Vinyl toluene

Y

Walnut oil

#

Waxes:
Candelilla

Y

Carnauba

Y

Hydrocarbon

Y

Paraffin

Y

† White spirit, see White spirit, low (15-20%) aromatic
† White spirit, low (15-20%) aromatic

Y

Wine, see Alcoholic beverages, n.o.s.
Wood lignin with sodium acetate/oxalate

Z

Xylenes

Y

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

Cargo name

46 CFR 30.25-1(d)(3)

IMO
Annex II
pollution
category

Xylenes/Ethylbenzene (10% or more) mixture

Y

Zinc alkaryl dithiophosphate (C7-C16)

Y

Zinc alkenyl carboxamide

Y

Zinc alkyl dithiophosphate (C3-C14)

Y

Notes:
“#” = The noxious liquid substance status is undetermined—see 46 CFR 153.900(c) for shipping on
an oceangoing vessel.
“†” = 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 noxious liquid substance category has been assigned by the Coast Guard, in the absence
of one assigned by the IMO. The category is based on a GESAMP Hazard Profile or, by analogy, to a
closely related product having a noxious liquid substance assigned.
Bolded entries were added from the March 2012 Annex to the 2007 edition of the IBC Code (MEPC
63/23/Add.1), the December 2012 IMO Marine Environmental Protection Committee Circular
(MEPC.2/Circ.18), or the December 2013 IMO Marine Environmental Protection Committee Circular
(MEPC.2/Circ.19).
“Cat” = Pollution category.
“F” = Flammable (flash point less than or equal to 60 °C (140 °F).
“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.
“LFG” = Liquid flammable gas.
“n.o.s.” = Not otherwise specified.
“OS” = An “other substance” considered at present to pose 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.

46 CFR 30.25-1(d)(3) (enhanced display)

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR 30.25-3

“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, as defined in Chapter 2 of the 2020 International Bulk Chemical Code.
“X,” “Y,” and “Z” = Noxious liquid substance categories under MARPOL Annex II.
[78 FR 50152, Aug. 16, 2013, as amended by USCG-2013-0423, 85 FR 21663, Apr. 17, 2020; 86 FR 42738, Aug. 5, 2021;
USCG-2022-0327, 88 FR 81188, Nov. 21, 2023]

§ 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.
[CGD 88-040, 56 FR 65006, Dec. 13, 1991]

Subpart 30.30—Interim Procedures for Evaluating Vessel Personnel Licensing and Certification
Programs of Foreign Countries
Source: CGD 79-081a, 45 FR 23427, Apr. 7, 1980, unless otherwise noted.

§ 30.30-1 Scope and purpose.
(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 46 U.S.C. 70021(a)(5) on operation with those officers in U.S. navigable waters and
ports.
[CGD 79-081a, 45 FR 23427, Apr. 7, 1980, as amended by USCG-2020-0304, 85 FR 58282, Sept. 18, 2020]

§ 30.30-3 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.

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46 CFR Part 30 (up to date as of 6/03/2024)
General Provisions

46 CFR 30.30-5

§ 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]

§ 30.30-7 Availability of materials.
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.
[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.
[CGD 79-081a, 45 FR 23427, Apr. 7, 1980, as amended by CGD 97-057, 62 FR 51043, Sept. 30, 1997]

§ 30.30-11 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]

46 CFR 30.30-11(d) (enhanced display)

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