This paper shows examples of fast and reliable design methods for the basic design of Mega Yachts in various fields. Starting with the design of the hull form it is presented how an energy efficient, but still very fast hull can be custom designed with potential flow CFD optimizers. A CFD Resistance prediction is followed by the design of the propeller and rudder. Modern high skew yacht propellers with very low pressure peaks are quite challenging for high efficient and low cavitating rudders. An advanced twisted flow rudder is presented. Finally a sea keeping analysis with coupled motion of water in a large and slender pool is shown. All calculations were further investigated by model scale tests. The paper describes the methods used for the calculations, and presents the results and the verification by model tests.
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