On Wed, 6 Jun 2007 17:16:39 -0400, "Roger Long"
wrote:

You can figure .054 to .06 gallons per horsepower hour depending on things
like how much electric power is being drawn and the effeciency of the
specific engine. Those of us living the simple life seldom run our engines
except to move the boat.

My definition of serious cruising is 3 to 6 weeks in the boondocks
where fuel is either totally unavailavle, of dubious quality, and/or
prohibitively expensive.

Most of the coastal north east has a fuel dock every 20 miles or so
and 20 gallons would be plenty as long as you go into town once a
week.