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post #6 of Old 09-13-2001
wwilson
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HULL , BOAT SPEED

hervel,

I do not know a simple formula for a cat. As you know the catamaran is not restrained by displacing water - which the simplistic formula is based on. The ability to plane in a catamaran frees you of all that stuff. I suppose a much more complex formula based on drags (hydro and aero) and power is possible but it would be less general in nature i.e. requiring very specific measurements for your boat.

wlw
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