Neil, Agreed, but I think that these are different boats. I guess the wider the boat, the more true what you say is. Obviously, centerboard dinghies use that (the CB moves outside and provides the righting moment). I was always under impression that traditional keel boats (especially the older ones with narrow hulls) depend on the low centre of gravity (heavy keel) and not so much on the shape stability. I guess the newer designs with wide beams depend on the shape stability first.
I stand corrected. Marek
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