caledonia yawl righting moment

[manos]

hellow.
Does anyone know the righting moment of the caledonia yawl boat?
Can this boat recover from a capsize?
thanks.

[Thad]

It is an open boat of very capable shape. If you fill it up it will take some serious bailing.

[Otto49]

You might want to check out this thread on the CY -

http://www.mavc2000.com/caledoniayawl/dd_capsize_1.htm


Barry

[Otto49]

Corrected link

http://mavc2002.com/caledoniayawl/dd_capsize_1.htm

[Thorne]

You'll need to be more specific, as the boat can be rowed without spars or rigged various ways.

The Welsford Yahoo group would be a good place to ask the question once you've defined it so it can be answered, or directly to John via email.

[manos]

Thorne you are right.Half decked,balanced lug, no mizzen,flotation in both ends and 100Kgrs of lead ballast around the centerboard.Am I forgeting something?
-Otto49 thanks for the link.

[ahp]

Otto49, your link seems to stop short of the capsize.

[kenjamin]

Try this for parts 2 & 3

http://mavc2002.com/caledoniayawl/dd_capsize_2.htm

http://mavc2002.com/caledoniayawl/dd_capsize_3.htm

[John Meachen]

Venchka might have been able to help with this thread,not seen him posting here for a while.

[Thorne]

Don't know the specifics of these numbers, but I suspect that they are determined using very basic hull and spar configurations.

As I dimly recall, they set up a hull and spars with no sails and no wind. The hull is tipped over to various angles and tested to see if it will right itself.

It is then tipped to the point of capsize and the angle recorded. If it turns turtle, it is tested to see how much force is needed to right it (I think).

So these numbers have very little to do with a real boat with a real load in high winds with sails up -- as in the links above.

I think they also do some flotation tests for commercial boats -- read a link to a website here some years ago -- and those tests are also quite rigid and standardized. They swamp the hull in a tank, see what percentage floats, if the boat will keep the passengers out of the water or at least above water, etc.