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Nov 20, 2009 11:50 pm |
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re: re: re: On fins and nuclear powered ships.. and flaps |
abbeboulah
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You are assuming that the waves lift the boat evenly, which is not at all what happens in reality, especially if the boat already has some motion, and the more weight it has relative to the mass of the wave. The difference in pressure between the front of a boat encountering a wave and, say the middle where it is in the through, is considerable. It accounts for the phenomenon of boats actually breaking up (as has happened in at least one Americas cup race) and boats 'sailing under' at 'hull speed', when the wavelength of the wave equals the vessel hull length: the pressure of the boat itself (plus whatever wind load there is) forces the front of the boat into and under the next wave, pushing under for good. If I ever get my boat out again, I'll invite you out with me to experience it. You'll get wet. You are right though that a lever off a stationary fulcrum will exploit the wave action more efficiently. But then it doesn't go anywhere... Private Reply to abbeboulah (new win) |
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