(a) Materials other than those specifically listed in 46 CFR 58.50-5, Table 58.50-5(a) and in 46 CFR 58.50-10, Table 58.50-10(a) may be used for fuel tank construction only if the tank as constructed meets material and testing requirements approved by the Commandant (CG-ENG). Approved testing may be accomplished by any acceptable laboratory, such as the Marine Department, Underwriters' Laboratories, Inc., or may be done by the fabricator if witnessed by a marine inspector.

(b) [Reserved]

[USCG-2003-16630, 73 FR 65188, Oct. 31, 2008, as amended by USCG-2012-0832, 77 FR 59778, Oct. 1, 2012]