Gary wrote:

I think the stability curves are wrong. If you plug the numbers into
the formulas at US sailing you get a much higher AVS. 110 degrees just
doesn't make sense. Not only that but the 460's keel, although
seemingly a little light, is bulbous with the weight quite low.
Something is wrong with that graph.

Gaz

I didn't find the formula at US Sailing's site but...How do
you find AVS without using a sophisticated stability program
that knows the shape of the hull?

The US Sailing formula may give an indication of ultimate
stability (the capsize screening formula) but that is a very
simple rule of thumb.

The inclining experiment data, which does determine the VCG
of the real boat, is plugged into a stability program
(GHS/Autohydro etc.) that gives the stability curve.

Robert has retired fairly recently but he should be able to
help you with your questions.

Evan Gatehouse