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If you are still awake, and really want to read the 5 chapter discussion on scetch, you can just copy the first sentence of the mentioned post, which reads
As was found during the model tests and also the V.P.P runs, the heel angle of the vessel is critical to the performance. Since in section 4.2 it has been specified that a reduction in the keel length is necessary, if the same rig with the same sail area is carried on the new yacht she will heel to a greater angle as the righting moment is reduced
Paste it in google, and two occurrences appears. The first, is this thread, the second, the UK page.