On Tue, 11 Sep 2007 01:42:39 GMT, Jere Lull wrote:

On 2007-09-08 21:40:35 -0400, Larry said:

in powerboats like trawlers, motor yachts, bubbleboats. Anything
guzzling that kind of fuel is making a LOT of waste heat and simply
dumping it overboard.

You might be surprised. Friend had a 42' trawler that used about 1 gph
to go 8-10 knots. New boat is 55', but still only uses about 3 gph for
slightly higher speeds. There's not that much waste heat to use.

Last time I was in New York I got a peek at Forbes' yacht. Goes 25 on
150 GPH. Has a helocopter on the rear deck, the kind shaped like an
egg.

Casady