Earlier in this thread somone said "First fuel tanks must be certified as fuel tanks, thickness, baffles and pressure testing, maybe other things that I am not remembering right now. They have to have approved fuel hose for fill, vent, supply and return. You would have to add supply dip tubes and return line. Then you might have fittings on the bottom of the tanks which may or may not be legal."
I curious about the "Legal" part of this. Is this really a law? Passed by our elected officials? Or, is is a rule, enforced by the Coastgauard? "Prepare to be boarded and have you fuel tank fittings inspected!". Or is it a rule for new boat manufacturers? Or a recommendation enforced by your insurance company? What are we really talking here?