Thread: One Engine
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Old 08-16-2013, 09:14 PM   #14
Join Date: Aug 2012
Posts: 741
There are a number of old strings on this subject. Timjet and I actually ran some performance tests on our boats that measured fuel burn at the same speed both single a twin engined. For a semi displacement hull running in the 8-9 MPH speed range with one prop freewheeling (lowest drag configuration), the fuel savings is in the 20% range.
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