boat design ratios
Sail boats: if the design budget allows, a polar diagram of anticipated performance on different points of sail in varying wind strengths can be prepared. power boats: power and range calcs. at the very least, this takes the displacement, the waterline length, quantity of fuel, horsepower available, and the various vessel speeds, and gives a. However, with the help of design ratios, you can not only compare and contrast different designs, but get a pretty good idea, sight unseen, as to how a boat is going to perform under sail. the beneteau sense 46 is a typical modern cruising boat, with an sa/d of 19, a ballast ratio of 28 percent and a d/l of 159.. With modern boatbuilding materials and design trends that increase internal volume by removing overhangs, d/l ratios for all types of boats have steadily shifted to lower numbers. for a brand-new coastal cruiser, using published numbers, i would look in the 150 (racer/cruiser) to 250 range, and for an offshore boat, in the 250 (pretty good. 
boat design ratios
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