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 (1) Antifouling paint need not be applied to aluminum boats. Aluminum boats are dry-berthed or
subject to frequent beaching. The NMP has the responsibility for deciding whether to apply antifouling
paint under these conditions.
(2) The NMP has the responsibility for specifying the desired antifouling paint colors for aluminum
ships or crafts and for new aluminum ships or crafts scheduled to join their Commands.
(3) The proprietary products approved for use on aluminum boat shipbottoms and aluminum boat boot
toppings are listed in Appendix B.
saltwater ballast tanks are listed in Table B-10. Surface preparation by abrasive blasting to near-white
metal is required for maximum adhesion and performance. Coatings shall be applied as recommended by
the manufacturer.
water tank coatings have a potential impact on crew health, well-being, and morale because they make
food and beverages unpalatable. Ship operating schedules can also be adversely affected, with worst
cases requiring unanticipated/additional time at an industrial activity for coating replacement. Therefore, it
is recommended that all potable water tanks be painted at each overhaul by a depot-level activity to
maximize compliance with these procedures and to minimize the extent of potable water tank
preservation required outside of overhaul. This policy will ensure for sufficient paint curing times.
a. Approved Coating Systems. The commercial products listed in table B-9 are approved for use in
potable water tanks.
b. Proprietary Coatings. Proprietary coatings listed in Appendix A, Table A-2 shall be mixed and applied
in accordance with the manufacturer's instructions and as specified in this TB. If ambiguity exists,
requirements of the TB shall govern. Any unresolved conflicts shall be reported to the NMP for guidance.
Deteriorated epoxy-polyamide coatings shall be removed and replaced with an approved proprietary
coating system.
c. Coating Requirements.
(1) The following requirements apply to all coatings used in potable water tanks:
(a) Drying time between coats shall be no less than 48 hours at a minimum temperature of 21C
(70F). Heated air shall be used if necessary to maintain the proper temperature.
(b) Ventilation shall be a continuous airflow (See Section 2).
(c) Fully coated tanks shall be cured for a minimum of 7 days under the same conditions mentioned
above prior to being filled.
(d) Refer to paragraph 2-14. Application of Paint in a Confined Space for ventilation requirements
guidance.
(e) Freshly painted potable water tanks shall be rinsed at least twice with freshwater before being
disinfected and put into service.
(2) It is recognized that situations arise where very limited touchup is required, and specified drying
times would have an adverse impact on the ships schedule. There is no approved procedure for
accelerating drying or curing of these paints. Any situations requiring accelerated paint drying or curing
should be referred to the NMP for approval, including a proposed resolution such as using heat to shorten
drying and curing times.
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