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post #1814 of Old 10-30-2011 Thread Starter
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Originally Posted by estaban View Post

I wrote it horribly, not according to what I was thinking. I was thinking of the derivative, the rate that stability increases from zero degrees: the slope of the curve. In other words, does stability increase only slowly as the boat begins heeling from zero degrees, or sharply? A single number could give a reasonably good picture here.
Yes, I understand what you mean

You can see that on a GZ (or RM) curve and it is exactly as you say, a step curve indicates a boat that generates RM with small angles of heel. Multihulls have a very step GZ curve, so step that it don't look like a curve

Beamy boats have more steeper curves comparing with narrow boats but, providing they have an adequate RM to sail, they will have also a higher AVS and a smaller inverted stability.


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