Good points, especially the clogging with salt. I also like your idea
of possibly collecting the water that condenses out for reuse.

Instead of putting the radiator underwater and running air pipes down,
it might me just as effective and easier to keep the radiator on board
and drop a flexible hose with a weight on it to pick up the cooler water
at the bottom.

Terry Spragg wrote:

Plumb an old car heater radiator...
Perhaps a few feet of plastic 3" pipe could push an air box down to
deeper, cooler water? Two such pipes could conduct air through the
radiator....

Evaporative coolers clog with salt if the water used is not fresh.


--
Dan Best - (707) 431-1662, Healdsburg, CA 95448
B-2/75 1977-1979
Tayana 37 #192, "Tricia Jean"
http://rangerbest.home.comcast.net/TriciaJean.JPG