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Old 24-06-2009, 13:35   #1
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Ratings of Sailboats

Is there a forumula with regards to length, beam, displ, draft that determines stability, capsize risk, comfort?

I am trying to narrow down my upgrade choice and am really looking those factors.

That being said if you could rate the following boats, noting pros and cons...if you can....based on:

Stability, Capsize Risk, Comfort, Durability and Quality Construction

Bristol (70's-80's)
Morgan (late 70's early 80's)
Hunter (80's early/mid)
Tartan (70's)
C&C (80's)
Cape Dory (early 80's)

All in the 30-34 foot range. Looking for the best build, best performing, and most stable.

PS: I really appreciate all the wonderful knowledge that you all have shared on these forums. Just a great community.
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Old 24-06-2009, 13:45   #2
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Try this site:
Sail Calculator Pro v3.53 - 2000+ boats
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Old 24-06-2009, 13:56   #3
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Aloha Corkscrew,

Just a personal opinion on your list but I like the earlier Tartans and Cape Dorys. Those are the ones I'm most familiar with. Possibly early Bristols and earlier C&Cs.

I'd certainly wait for a few more replies and study as much as you can about the models you've listed.
kind regards,
JohnL
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Old 24-06-2009, 15:46   #4
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Old 25-06-2009, 05:58   #5
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I like your spreadsheet....how do you calculate motion comfort and capsize risk? Would like that forumula to calculate other boats.

Thanks
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Old 25-06-2009, 06:35   #6
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Quote:
Originally Posted by corkscrew View Post
I like your spreadsheet....how do you calculate motion comfort and capsize risk? Would like that forumula to calculate other boats.

Thanks
The sail calculator site listed in the second post most likely already has your model listed, or you can add your data there to get the answer or you can plug in the numbers here (buttons on top have the other formulas as well on this link):
Motion Comfort Ratio

Here's the capsize formula:
Capsize screening formula - Wikipedia, the free encyclopedia

Here's the motion comfort formula as well as others:
Ted Brewer Yacht Design

As stated by Brewer, it's a tongue in cheek formula, but it seems to have caught on.

John
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