I figure some of you might be interested in this design for a self-contained water heater that you can use on a boat. I copied this from one I saw online so I can't take credit for it but it's too good not to share. It's based on the Eccotemp L5 propane water heater. If you already have a washdown pump you can hook it up to that. My boat doesn't have a pump so I added one with a battery to make it a completely self-contained unit.
