1625-0032 Stat/Authority

Coast Guard, DHS

§ 71.50–15

assess the extent of the damage and to
effect permanent repairs.
(e) Each vessel which has not met the
applicable examination schedules in
paragraphs (a) through (d) of this section because it is on a voyage, must
undergo the required examinations
upon completion of the voyage.
(f) For a vessel that is eligible per
§ 71.50–17 and the owner opts for an alternate hull examination with the underwater survey portion conducted exclusively by divers, the vessel must undergo two alternate hull exams and
two internal structural exams within
any five-year period. If a vessel completes a satisfactory alternate hull
exam, with the underwater survey portion conducted predominantly by an
approved underwater ROV, the vessel
must undergo one alternate hull and
one internal structural exam, within
any five-year period. The vessel may
undergo a drydock exam to satisfy any
of the required alternate hull exams.
(g) The Commandant (CG-543) may
authorize extensions to the examination intervals specified in paragraph
(a) through (c) of this section.

(3) The method used to accurately determine the diver’s or remotely operated vehicle’s (ROV) location relative
to the hull;
(4) The means for examining all
through-hull
fittings
and
appurtenances;
(5) The means for taking shaft bearing clearances;
(6) The condition of the vessel, including the anticipated draft of the
vessel at the time of survey;
(7) A description of the hull protection system; and
(8) The name and qualifications of
any third party examiner.
(c) If your vessel is 15 years old or
older, the cognizant District Commander for the area in which the exam
is being completed, may approve an underwater survey instead of a drydock
examination at alternating intervals.
You must submit an application for an
underwater survey to the OCMI at
least 90 days before your vessel’s next
required drydock examination. You
may be allowed this option if—
(1) The vessel is qualified under paragraphs (a)(2) through (4) of this section;
(2) Your application includes the information in paragraphs (b)(1) through
(b)(8) of this section; and
(3) During the vessel’s drydock examination that precedes the underwater
survey, a complete set of hull gaugings
was taken and they indicated that the
vessel was free from appreciable hull
deterioration.
(d) After this drydock examination
required in paragraph (c)(3) of this section, the OCMI submits a recommendation for future underwater surveys, the
results of the hull gauging, and the results of the Coast Guards’ drydock examination results to the cognizant District Commander for review.

[CGD 84–024, 52 FR 39652, Oct. 23, 1987, as
amended by CGD 84–024, 53 FR 32231, Aug. 24,
1988; GCD 95–072, 60 FR 50463, Sept. 29, 1995;
CGD 96-041, 61 FR 50729, Sept. 27, 1996; USCG–
2000–6858, 67 FR 21076, Apr. 29, 2002; USCG–
2009–0702, 74 FR 49231, Sept 25, 2009]

pmangrum on DSK3VPTVN1PROD with CFR

§ 71.50–5 Underwater Survey in Lieu of
Drydocking (UWILD).
(a) The Officer in Charge, Marine Inspection (OCMI), may approve an underwater survey instead of a drydock
examination at alternating intervals if
your vessel is—
(1) Less than 15 years of age;
(2) A steel or aluminum hulled vessel;
(3) Fitted with an effective hull protection system; and
(4) Described in § 71.50–3(a) or (b).
(b) For vessels less than 15 years of
age, you must submit an application
for an underwater survey to the OCMI
at least 90 days before your vessel’s
next required drydock examination.
The application must include—
(1) The procedure for carrying out
the underwater survey;
(2) The time and place of the underwater survey;

[USCG–2000–6858, 67 FR 21077, Apr. 29, 2002]

§ 71.50–15 Description of the Alternative Hull Examination (AHE) Program for certain passenger vessels.
The Alternative Hull Examination
(AHE) Program provides you with an
alternative to a drydock examination
by allowing your vessel’s hull to be examined while it remains afloat. If completed using only divers, this program
has four steps: the application process,
the preliminary examination, the pre-

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