jim: yes the Honda 2HP motor will easily move the M15 at 4 knots. when i motor i throttle the motor to get this speed (as matched to the GPS) ... hey, its a sailboat and who is in a hurry. the throttle setting is someplace between 1/2 and 2/3 depending on wind and tide. at the above throttle setting i'll easily run an hour to an hour &15min. (honda says the motor will run 55min a full throttle.) using the above speed this mean i'm running about 4-5nm / tank. tank holds ~1/4 gallon so getting 15-20nm/gal. during the monty san juan cruise motor time was 12hr 50min out of 33hr 10min moving (20hr 20min was spent sailing). total distance was 102nm (remember that sailing required tacking and increased nm's traveled v. 'strait line' course when motoring). i departed on the cruise with ~3.5 gallons of fuel. returned with something between 1.5 and 1.75 gallons (based on the small 1.2 gal tank being full and some in the 2.3 gal tank); making a total fuel use of 2-ish gallons. and then there is this statement, "you experience may vary." ;-) dave scobie M15 #288 - not yet named Jim Sadler <jimsadler@jascopacific.com> wrote: .... Will the 2hp actually move an M-15 at 4 Knots? Captain Jim Sadler Skipper sailing vessel Pelican M-15 --------------------------------- Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center.