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post #3 of Old 07-03-2007
Siren 17
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That is the quick math. To get your totally correct hull speed, you would have to know your exact amount of wetted surface. Combined with the pitch of your bow (Bruce Number ) . This speed would only be good in slack water with no waves, as any wave action would change the speed. So unless the quick hull speed is drastically lower then the real speed though the water, I would just assume that the 1.34 multiplier is a little Conservative for your boat

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