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Sail area in cubic feet ?? ,,, nothing here is about hull design ,,, it is about boat design ,,,
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Thanks for the info. My husband and I want to buy a Catamaran Sailboat to live, what do you recommend us to watch for.? Btw, we are new to all this. Thanks
1m 2sLength
In this video we talk all about sailboats, and their hull design. Hull design is a very important thing to consider when choosing your dream sailboat. This is the forth in a series of videos where we'll try to give the best advice and ideas on how and where to look for your dream sailboat For more information please visit: http://www.mydreamsailboat.com/boating-suggestions/dream-sailboat/
Displacement boat hulls cant exceed their given hull speed by more than about 20%, so a 20 foot displacement hull cant exceed around 6 knots, its just the laws of hydrodynamics, no matter how much sail area you have, greater sail area also requires greater ballast adding weight and as such slows you down.
Generally, the larger the boat, the faster it can go. For a displacement boat, a heavy deep-keel boat, the maximum speed a given hull can attain from wind power is called "hull speed" and is largely dependent on the waterline length of the boat. Hull speed is expressed as 1.34 X the square root of LWL, or length of waterline. If a cruising sailboat has a waterline length of 36 feet, she should be able to sail 1.34 x 6, or approximately eight knots.
The idea behind this is that a boat cannot travel faster than the wave she creates and the speed of that wave is 1.34 X the square root of l, "l" being the distance between the crests. The length, "l", of a wave increases proportionally as the height "h" of the wave increases.