1998 27 Full Cabin Inboard Fuel Consumption

Optimizing the performance of Boston Whaler boats
sandbox9@hotmail.com
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1998 27 Full Cabin Inboard Fuel Consumption

Postby sandbox9@hotmail.com » Wed Jul 11, 2018 9:43 pm

What is the fuel consumption of a 1988 27 Full Cabin powered with twin Mercruiser 5.0 litre inboard engines.

jimh
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Re: 1998 27 Full Cabin Inboard Fuel Consumption

Postby jimh » Thu Jul 12, 2018 7:53 am

I suggest the gasoline engines will have a BSFC of about 0.55-lbs/HP-hour.

Assuming each engine produces 250-HP, then the pair of engine at a total of 500-HP will in one hour consume

500 x 0.55-lbs = 275-lbs of gasoline

Assuming gasoline gas a density of 6.25-lbs per gallon, 275-lbs will be

275 / 6.25 = 44-gallons

That’s about the best that can be hoped, and the actual fuel consumption could be higher.