Walt:
With the Yanmar 6LY-STP 370 hp engine, my Mainship Pilot 34 will top out at 20 kts and high cruise at 2,800 rpm and 15 kts. Both were measured with two way GPS speeds, 1/2 fuel and water, very clean bottom and two persons on board. I don't have measured fuel consumption, but Yanmar's prop curve indicates about 12 gph at 2,800 rpm which I suspect is pretty close.
David
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