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From another forum - Not my words, but I have heard to always use marine fuel lines:

The big deal with Marine fuel hose is the permeability and fire resistance of the hose.

The car doesn’t need the strict permeability requirements because the lines are run outside the car. In a boat the hoses are run under the deck and any fumes permeating thru the cover would lead to a build-up of fumes below decks and we all know what happened with you ignite fuel vapors under the deck.

On the fire resistance side, if you car catches fire you get out and run. If your boat catches fire where are you running too?

Yes, SAE J1527 Marine Fuel Hoses is the specification for fuel hoses used on boats. Type A under deck, Type B above deck