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post #16 of Old 09-11-2007
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SailingDog said: <>

It's not entirely clear, but I assume you meant that only the HR Mistral was fin keeled? As a point of clarification, the boat normally referred to as the "PSC 31" is fin keeled also. Confusion sometimes arises because PSC had an earlier model called the Mariah 31 (designed by Morschladt) that indeed was full-keeled and is very similar to the Westsail 32 in appearance. Probably in performance too.

The PSC 31, designed by Crealock, has a 4'10" fin, or optional shoal draft with a 4' Scheel keel fin variant. This boat is distinguished from its otherwise very similar canoe-sterned stable mates by its traditional wine-glass transom.

Edit: To further clarify, here are some photos of a PSC 31:

And here is a Mariah 31, also built by PSC:

The Mariah is more in keeping with the SC31/Westsail 32, etc, but the OP did enquire about fin-keeled boats so I mentioned the PSC 31.

Jeff is correct, the SA/D is supposed to be calculated without the staysail area for baseline apples-to-apples comparison (and I've heard that IPs numbers include the staysail too). Still, it doesn't hurt to also run the calculation with the staysail area included to better understand how the boat might perform under certain conditions. We mostly use our staysail when reaching in light air, when the extra area is most advantageous.

Last edited by JohnRPollard; 09-11-2007 at 05:35 PM.
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