Question

Eq-43 which type of fire extinguisher should be onboard a vessel with a permanently installed fuel tank

Answer 1

I think a type B fire extinguisher should be on board a vessel with a permanently installed fuel tank. 
All vessels are required to have a type B fire extinguisher on board if one or more of the following conditions exists. That is; Inboard engine, vessel length of 26 feet or longer, enclosed living spaces, closed storage compartments in which flammable or combustible materials may be stored, permanently installed fuel tanks, and also closed compartments where portable fuel tanks may be stored.