Maximum cruising range - V21 with 150hp

[SkunkBoat]

Now, accurately calculating GPH and MPG is difficult without specifically setting out to do such. Without a flow meter, you have to run a specific course and try different speeds and accurately measure your fuel and try again...not likely that anyone is going to do that.

I've got the Suzuki 140 4 stroke. I have made a 100+ mile trip three times and refilled about 33 gals each time. But...

I can't say for certain how much farther than 100 I went. I know for sure it is 50 from the inlet to the destination. Its 9 mile round trip from inlet to dock so lets say 110+.(yea, yea, I could figure out how to get that info out of the gps but I'm tired!!!)

I trolled around for hours while there.

I didn't come back directly, I hit spots on the way in.

I don't know for sure that "full" is the same when I gas up light and by myself vs. heavy with coolers, gear, and 3 guys onboard. "Full" meaning that the gas spit out the vent.

I can say for sure that I get no less than 3.3 mpg running a mix of speeds including 4 hours at 25 to 30 mph.

I would say that I could probably get 4 mpg running 25mph @ ~4500rpm in a straight line without stops on a flat sea... so 240 mile range would be theoretically possible with a 60 gal tank.

But I won't be running to the Hudson Canyon for yellowfins, much as I'd like to... ; )