Capsize Screening value chart

[Terri]

http://www.seidelmann-owners.com/SailSpecs.htm

[Dan Vitale]

Its hard to believe that my big tubby boat could tip over easily. The only two variables in determining capsize values are displacement and beam. I would think that keel size, shape, and ballast would be factors also.

[John Shasteen]

A tubby boat is not neccessarily any more or any less prone to capsize. US Sailing has an Angle of Vanishing Stability caculator on their website, check it out: http://www.sailingusa.info/cal__avs.htm

[Terri]

Thanks, will check out...came upon this one..wasn't to sure of. Read somewhere once that a 30' boat can be ?capsized by a 6' wave hit the right way. Which I knew where I read it..wasn't just someone yakking a full of rum..LOL

[Dan Vitale]

I read that if a wave approaches the size of your beam, then you may be toppled. But I think that frequency and shape of waves matter too. In canoe hulls they talk about primary and secondary stability. My Bayfield is 29' with 10'2" beam; most likely regarded as more primary stability, according to the calculators. Other boats in her class, like the Cape Dory and Southern Cross, have less beam and rate as more stable in the capsize value chart.

[Tim]

The ballast in the keel is indirectly incorporated into a boat's displacement value.

[Tim]

They don't have any Hans Christian listed? D - ARRRGH- N !!

[Terri]

HC38 is 1.62 Which one do you want? I'd like the cutter myself :-) (33 or 43)

[L O L A]

Nor FREEDOMS...we must be safe...lol

[Terri]

Capsize Ratio Calculator http://www.midatlanticsail.com/calc/capsize.htm (Agree, most model's not included on this chart. Use to have a better one, can't find it. ) I think Freedom's are probably very stable. Under 2.00 is good I think. Forget my boat! Won't be sailing Twizzled to the Azores anytime soon.

[Randy & Jeannie]

Here is a comparison chart that can be done between boats. Some may have seen this before. http://www.image-ination.com/sailcalc.html