Hope this helps.

Fresh Breezes- Doug King


it would help, doug, if it weren't bull****, all based on a couple assumptions
that are not hardly true, i.e. a boat *must* go over a wave rather than through
it, and that mathematically a sine function explodes at zero degrees.

but it sounds good, because it -sounds- like hard science. just like in one of
the only three books ever written about sailing states.