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Old 19-03-2012, 15:01   #1
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Cool CSY 33/37 & Westsail 32 - numbers vs reality

Today I was crunching some numbers between the CSY 33, CSY 37 & the Westsail 32*. Here is what I came up with. It seems to me that the CSY 33 or 37 would make great offshore boats, however numbers are different than reality and I was wondering if anyone knew more about the CSY 33 or 37. If your wondering why I threw a 37ft boat against a westsail 32ft, my reasoning is that though the westsail is only 32ft it stretches into the 40ft mark with its bowsprit, and its sail area is very similar in size.

As a note, I really like the way the CSY 33 looks.
Also as a side note, is there anyway to squeeze more hull speed out of either the CSY or the Westsail (more sail area, etc)?


HTML Code:
                               CSY 33 || CSY 37 || Westsail 32
-----------------------------------------
LOA                          = 33     || 37      || 31.2(40ft w/ bowsprit)
LWL                          = 25     || 28      || 27.29
Beam                         = 11     || 12      || 10.91
Displacement                 = 15200  || 19500   || 19528 
Sail Area                    = 630    || 610     || 652
Capsize Ratio                = 1.78   || 1.78    || 1.62 
Hull Speed                   = 6.7    || 7.09    || 7
Sail Area to Displacement    = 16.43  || 13.47   || 14.39 
Displacement to LWL          = 434    || 397     || 429
LWL to Beam                  = 2.27   || 2.33    || 2.5
Motion Comfort               = 34.89  || 35.57   || 43.61 
Pounds/Inch                  = 983    || 1201    || 1064
Draft                        = 4' 11" || 4.7/6.2 || 5


*the numbers came mostly from this cool site: http://www.image-ination.com/sailcalc.html


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Old 22-03-2012, 06:35   #2
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Hey there I can't comment on the CSY 33 or 37 but I do have a CSY 44 and there is no way you'd squeeze anymore speed out of it!
I must say though that CSY definitely built a beautiful boat and there's nothing else I'd prefer to be out in a big sea in.
The CSY owners forum is also a great source of information if you have any more questions!
Good luck on your decision
Cheers Nick
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Old 22-03-2012, 06:59   #3
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Re: CSY 33/37 & Westsail 32 - numbers vs reality

The CSY33 is a beauty with those big salon ports. I'm guessing with the cut-away keel and skeg-hung rudder she might be a bit more maneuverable than the W32.

The only thing that jumps out at me in the numbers you posted is the comfort ratio. I thought the CSY's would be really close to the W32.
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Old 22-03-2012, 07:10   #4
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Re: CSY 33/37 & Westsail 32 - numbers vs reality

"Hull speed" is what it is. The only way to change it is to change the LWL. That does not mean, however, that you cannot get the boat to go faster. "Hull speed" is just a theoretical number. The boat may very well go faster, or slower, depending on a lot of variables.

That said, a boat like the Westsail, with a full keel and deep, round bilges is going to be hard pressed to exceed its theoretical hull speed. The CSY boats, with a flatter bottom, cutaway forefoot, and much more of a "fin" keel (though not a fin in the way, for instance, a J-Boat has a fin keel) is more likely to be able to exceed its theoretical hull speed. So more sail might help there.

Now, having said THAT, there is yet another caveat. I've never sailed on a CSY. I don't know what they sail like. A lot of boats, if you put up too much canvas, they heel way over and end up actually going slower than if you just sail them the way the designer intended.

So, while this kind of research is useful, don't get too hung up on the numbers and ratios. Good luck.

Edited: By the way, you might want to double-check your figure for motion comfort for the Westsail. By my calculations, you've got the right numbers for the CSY 33 and 37, but I come up with 39.95 for the Westail.
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Old 22-03-2012, 19:03   #5
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Re: CSY 33/37 & Westsail 32 - numbers vs reality

Quote:
Originally Posted by denverd0n View Post
By my calculations, you've got the right numbers for the CSY 33 and 37, but I come up with 39.95 for the Westail.

I must confess that I grabbed must of the data from this site: http://www.image-ination.com/sailcalc.html I'm not really sure how abouts he came about most of these numbers.
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