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post #3 of Old 10-12-2008
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found these formulas on a website.

Racing Symmetrical Spinnaker = 1.8 x J x I

Racing Asymmetrical Spinnaker = 1.8 x J x I

Cruising Asymmetrical Spinnaker = 1.65 x J x I

Have to admit, 1,584 ft sounds like an awful big spinnaker.

This site here has the formulas.

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