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Propane is used already for stove and oven on board. Storage would be a big factor. 100L of diesel can be stored in 5 plastic jugs lashed towards the bow.

The fuel storage is my main concern.

Diesel is hard to get going. To freak me out a friend who was helping me with my furnace years ago put out his cigarette in a jar of furnace fuel we had drained from the carb. It worked. It freaked me out and made me see diesel and furnace fuel differently ever more. Diesel has been used as a substitute for furnace fuel in my landlubber days. Fuel tanks will be probably what brings us ashore when the time comes. 🤪

I saw my grandfather put a cigarette out in gasoline once! It blew my mind.

Wow! Now that is crossing the line in my opinion! 🤣