I like the coil/exhaust idea.
I don’t want to circumnavigate, so
French Polynesia, north to
Hawaii, Alta
California and back to
La Paz.
The exterior mount for the
propane instant heater takes care of some problems, which I suspect is a solution looking for a problem.
I have a propane Force10 cook
stove. I bet it is probably more dangerous than the propane hot water heater. I have propane sensors in the
galley and
head. The carbon monoxide concern can’t be any different between the unvented
stove, and the vented HWH.
I liked my engine
cooling loop/electric tank heater, but the coolant loop sprung a leak, and I can’t see any reason to spend the $$ to replace it - and I have the extra space it used to occupy.
I would have probably enjoyed visiting
New Zealand in my boat - previous owners crossed from North America to NZ and then shipped her back.
Maybe in another lifetime.