Small yanmar guestimate of 1/2 gallon an hour, make maybe 5 knots...mmmmm
lets see 12 gallons good for 24 hrs, about 120 NM range....
I think you can go 8 hours and maybe 50 miles if not too much bad stuff
happens....thats how I would figure it and then maybe you can get back where
you started.

"Scott Vernon" wrote in message
...
How much fuel should I carry if I want to be assured of motoring (in
case there's no wind) non stop for 100 miles? 30' boat, disp.
#7,500. Yanmar 2GM20. I have a 12 gallon tank.
TIA

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Scott Vernon
Plowville Pa _/)__/)_/)_