At 01:47 PM 3/13/2011, Alistair Bell wrote:
>was windy, if that makes an difference :)

Big difference to the cooling rate, none of course to the ultimate temperature.

The little centrifugal pump hanging in the bottom of the tank in the
later ones can definitely burst if it freezes.  Dunno about the
external one.  The P-trap could be a problem too, as well as the
lines themselves.

Personally I'd put water-system antifreeze in the lines and not have
to worry about them.  Carry water in gallon jugs inside boxes with
newspaper, stick one or more hand warmers in the box overnight.

Alistair, shall we expect a graph showing number of handwarmers vs
outside temp vs inches of newspaper, with correction factors for air
supply to the handwarmers?

On Scamp we always carried a Sunshower(TM) on deck - clear front,
black back; on a sunny day you could get a hot shower and
surprisingly often it was at least warmish.  Was set up for maximum
economy of showering though, not for getting a glass of water
from.  Should have worked, though - and you could sleep with it if
you put a pillow case over it.

Yrs,
d