[PUP] Unsailboat fuel consumption

[Ron Rogers]

Larry could best deal with this. I think that weight or mass doesn't have 
much to do with it once you get it going. At that point you have momentum 
proportional to mass, so the more mass, the less she will be slowed by seas. 
Of course, if she is slowed, it will take more power to get her going again. 
But, she will not have lost as much momentum as a lighter boat.

The unsailboat is a wave piercer and has a long waterline and reasonable 
displacement. She is designed to make ~ 10 knots. So that speed contributes 
to momentum.

Idlelwild is long and narrow and built of aluminum (except for the wheels) 
and she got good mileage. The Diesel Ducks claim good mileage and they are 
relatively narrow in relation to their length.

Ron Rogers