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"Capt" Rob wrote:
Joe has claimed his motorsailor has a hull speed of 13 knots and sails at over 9. It's 43 LOA, which makes it not only faster than my 35s5, but also faster than a J133! A J-133 can go a lot faster than 9 or even 13 knots. Try sailing one some time. Joe claims to know something about boats. 13 knots, folks. Faster than a Jeneau 54 or Beneteau 57, faster even than a Swan 57 or Saga 48!!!! Wowee Zoweeee! Charlie Morgan wrote: Applying Froudes formula for hull speed, a 43 foot boat with a displacement hull has a theoretical hull speed of about 8.79 knots. That depends on the speed-length ratio, which of course dependend on prismatic coefficient and length/beam ratio among other things. "Hull Speed" is not a carved-in-stone absolute figure. DSK |
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