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Old 28-05-2009, 11:56   #1
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Theoretically Speaking

Hello: I'm new to the site, but an occasional visitor. I have a question for those who know. Theoretically speaking:

I have designed (using plyboat 2.1) a hull for a 27' double canoe. The WSA to Sail area is 2.5; B/LWL ratio is 12; Sail area to displacement is about 20+; Lateral Surface Area is around 12% of sail area; Has a narrow entry; block coefficient .64; freeboard is 11% of LOA.

Based on this data is there any reason this hull won't perform well.
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Old 28-05-2009, 15:50   #2
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Originally Posted by Proa42 View Post
I have designed (using plyboat 2.1) a hull for a 27' double canoe. The WSA to Sail area is 2.5; B/LWL ratio is 12; Sail area to displacement is about 20+; Lateral Surface Area is around 12% of sail area; Has a narrow entry; block coefficient .64; freeboard is 11% of LOA.

Honestly, I think you'll get a set of generally better informed responses at the boat designers forum.
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Old 29-05-2009, 06:10   #3
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Check your prismatic coefficient and make sure, your LWL/BC is 2.1-2.2. BC is beam between centerlines.

You can find these useful:

How to dimension a sailing catamaran? - Boat Design Forums post #14
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