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Old 10-24-2013
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Re: Question about sail area

Originally Posted by Chikokishi View Post
Designing/building a small sailboat. I need 100-110 square feet of sail for her.
Ok I'll bite, but I detect a serious lack of experience in sailing.

Go read this: SA / D Ratio

Now, how did you come up with 100 sq. ft.? Better to start with a good figure for displacement (yes, this is tricky) and then work out how much sail you want. Err on the side of more (up to a SA/D of 20 or so) but design to be able to shorten sail. Also depends on intended use - windy places or light wind places.
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