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post #579 of Old 01-08-2013
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Location: S/V Waltzing Matilda, Port Ludlow, WA (NW Puget Sound)
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Re: Full or fin keel?

A friend of mine decided to compare his Calalina 30 to my boat, same LOA, same LWL....lots of other differance....the final results surprised him
Captian Cicero
Ballast to weight ratio 28%
Max hull speed 6.7
Displacement length ratio 428.57
Sail area disp' ratio 13.15
Capsize screening ratio 1.42
Motion comfort ratio 46.71

Catalina 30
Ballast to weight ratio 41.18%
Max hull speed 6.7
Displacement length ratio 291.43
Sail area disp' ratio 15.17
Capsize screening ratio 1.99
Motion comfort ratio 23.99

I used SloopIT - Boat performance calculator
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