Evan Gatehouse wrote:
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

Thank you very much for your help. The dealer said he was
going to call Robert Harris for me regarding my concern.
If his design isn't as bad as the report suggests he'll probably
be happy to explain to me why I shouldn't worry too much
about the stability of this boat.