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Mr. Allen, just a few questions about your vessel if I might ask.
1. Is it sail or power?
2. What is the area of the vessel above the waterline?I don't mean measure
the area but is it large enough to catch a lot of wind?
3. What is the area of the vessel under the waterline?Do you have a large
keel area,what is the draft of the vessel and what is the shape of the
vessel under the waterline?
4. Does the vessel have a single screw or double screw?
For what it's worth, in my experience (large vessels), to a certain point
and perameters the area of a vessel exposed to water borne forces is greater
than the area exposed to air borne forces.The vessels speed through the
water and it's aspect to the wind and current is also a factor.Take this
simplified example: a vessel fully laden with a deep draft moving moving
slowly through the water even with a large sail area is much more effected
by the forces of the water than the wind.That same vessel unladen in the
same conditions is then more influenced by the wind because of
weight,inertia and a greater sail area exposed etc.
Mr. Kenchington's post on this matter,in my opinion,has merit.It's a good
way of looking at the problem.
I would be interested in finding out how your boat is powered and configured
for manouvering.

   

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