Boats; and (3) efficiently designed hulls make the best use of the horse- power produced by a sail plan. clearly, the designers of the clipper and 2 is a typical keel design with a sweepback angle of about 400. the effect of sweepback angle and aspect . keel,. Since i am going to lengthen the keel by about 15 % and add about 25 % extra weight as compared to the original design, i would have to increase the strength of the keel by the order 1.15 x 1.15 x 1.25 = +65 %, and that is why i decided to introduce steel into equation.. The keel design for the offshore 42 has by far gotten the most attention when it comes to engineering. we all know that a keel on a monohull is one of the most important aspects when it comes to safety and performance but judging by the failures we have seen in recent years, keels seem to have become a neglected part of production boat design..
The canting keel design greatly improves stability of the boat and allows it to travel at optimal angles about its axis of forward motion. the keel acts as a movable counterweight, controlled either automatically or manually, to achieve desired performance.. In the fully raised position, the keel will draw 3.5 metres. furthermore it is possible to raise the keel from nine metres to the six metre position while the boat is sailing and the keel is under load. this operation adds such immense loads and demands that the keel trunk is constructed incredibly strongly.. Slapping a winglet on a keel is not a slam dunk to make a net improvement in the boat's performance. the winglet itself adds drag, so it has to be shaped and twisted so as to reduce the keel's drag more than the winglet adds..
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