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post #1 of Old 08-09-2011 Thread Starter
masindi
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Building Cruising Catamaran: What is the ideal beam width on each hull?

Hi,

I am designing a 30ft coastal cruising catamaran in Jakarta, Indonesia and would like to know the ideal beam width for each hull that is suitable for simple and comfortable accommodation.

Based on Terho Halme's suggestions, the "length/beam ratio" of each hull should be between 9 and 12 for a comfortable cruiser. 8 would increase wave making and should be avoided. But if I aim for a ratio of 9, that means the beam width ends up only 3ft 3in wide (way too tight for accommodation, not to mention for retractable daggerboard).

Any suggestion for the ideal hull beam width for this 30ft cat?


Thank you!

Indi Soemardjan
Jakarta, Indonesia
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