I never had an M17, but on my C22 w/ 6hp motor, I found that the fuel consumption was so strongly dependent on small changes in speed, I could go almost as far or as short a distance as I wanted on the 5 gallon tank by just making small changes to the throttle. Since the fluid drag on the boat (the main force at speeds well below hull speed) is proportional to the square of the velocity. This means, for example that you will use approx. 4 times as much fuel to go 4 knots as 2 knots, 2 knots uses 4 times the fuel of 1 knot and so on. Sincerely, Tyler ----- Original Message ----- From: "Jason Leckie" <leckie.jas@gmail.com> To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Sent: Tuesday, July 31, 2018 8:29:17 AM Subject: M_Boats: Cruising San Juans and Gulf Islands Just getting ready to do some cruising around the San Juans and Gulf Islands for the next couple of weeks and contemplating how much fuel to carry for my 6 hp four stroke engine. Not sure how much a little engine pushing a little boat (M17) would consume, if the winds are not agreeable. David Scobie, how much fuel do you usually carry on your travels?