07-13-2022, 02:46 PM
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#16
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Senior Member
Join Date: Jul 2007
Location: Moultonborough
Posts: 3,532
Thanks: 1,574
Thanked 1,608 Times in 823 Posts
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Quote:
Originally Posted by Dave R
MPG is the only way to know if you are saving fuel; you can burn GPH when sitting still. My last boat had a 454 and 24 degree stepped hull. My MPG peaked at 2.7ish MPG between 30 and 40 MPH. It was substantially worse at around 2.0 MPG (if memory serves) at 25 MPH and got around 2.2 MPG between 40 and 45 MPH. Slowing down a planing hull boat is not always the best solution for economy. That said, if I run my current boat on plane at a 20 knot (23 MPH) cruise, it currently costs me 7 bucks per nautical mile, if I run at 8.5 knots (10MPH) it costs me 2 bucks per nautical mile. Guess what speed I run...
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20 for the win!
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