Lloyd Sumpter wrote:

....... looking
at "low-flow" showerheads, and they say they use 2.5gpm. Egad - for a
5-min shower that's over 10 gallons! Far Cove has 50gal of water, and I'm
thinking of addding another 20gal tank, but still: 10 gals per shower??

Is this realistic? What is a practical estimate of how much water an
on-board shower will take?

Nobody mentioned the best way to save water when showering, which is to start
with a small bucket of warm soapy water (can even be seawater) and wash down
with that. Only use the fresh water shower for rinsing off the soap & dirt &
salt. You can use less than 1 gallon per shower. Also saves energy going into
the water heater.

In a warm climate, you can shower on the transom platform and rinse quite
thoroughly using a garden sprinkler or spray bottle.

Taking a hot shower is one of the pleasures of civilization. No point in
cruising without it IMHO.

Fresh Breezes- Doug King