Thanks, @jimrr.
I’ve been searching for a regulation as @Jamesbrown suggested. Everything I’m finding is about fire resistant coatings, insulation, and fire fighting systems. It looks like
UL 1102-1992, Non integral Marine Fuel Tanks
might have the information, but its behind an $800 paywall, and it might be referring to gasoline, in which case my exam answer will be:
