"Nav" wrote in message
...
“The starting point when dimensioning the rig is to calculate the
righting moment. It is commonly agreed that a heel angle of 30o is a
good design angle. This corresponds to a reasonably high wind strength
with the sails still generating high loads and the boat making good
speed through the water.

That doesn't sound right to me.

My boat definitely performs better at a smaller angle of heel. I'd say 15 -
20o. Beyond 20o, performance begins to suffer.

Of course, some boats are designed to sail well when keeled over. Some of
the mini TransAts have keels that are adjustable sideways, *and* also have
an adjustable angle of attack!!! These keels are known as "3D" keels.



Regards


Donal
--