On Mon, 15 Nov 2004 11:59:47 -0500, Ryk
wrote:
Assuming that really is a dumb idea, how about recommendations and
caveats for installing a hot water system? How big a tank do you need
to get a satisfactory shower? Does running the engine while showering
extend that capacity a lot?
==================================

Showering with engine water? It might work out OK but there's at
least some risk of getting rust and scale in your plumbing system, and
temperature regulation might be problematic as your engine thermostat
regulates itself. You will also be unable to turn the shower off or
regulate the flow rate. The flow constriction may even cause your
engine to overheat.

I think most people would opt for a conventional water tank with a
heating loop just for esthetic reasons. A 5 gallon tank is enough for
one or two brief showers, and yes, running the engine will extend your
shower time. My last boat had a 10 gallon tank and that was more than
enough with 2 people on board.