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## DELLENBAUGH ANGLE

This is the angle that the vessel is presumed to heel given a force of 1 pound per square foot
on the sails, assuming they were all sheeted flat amidships. It is an approximation only, and
is based on the upright stability characteristics of the vessel. Being a very common and easily
done calculation, it is highly useful as a preliminary tool for comparing one vessel to another
in terms of a boat's relative power to carry sail. ... Of course, these “predictions” only consider
the boat at rest in calm water -- they do not predict how the boat will behave when it is in motion
in a seaway. Nevertheless, these are the standard means of comparing one boat to another, and for
such purpose they are highly valuable. So if your boat heels differently when in motion than the
equations predict, it is to be expected!