A ship is designed so that it is 250m long, its beam measures 30m, and its draft is 12
Chapter 9, Problem 9.73(choose chapter or problem)
A ship is designed so that it is 250m long, its beam measures 30m, and its draft is 12 m.1he surface area of the ship below the water line is 8800 m2 A 1/40 scale model of the ship is tested and is found to have a total drag of 26.0 N when towed at a speed of 1.45 m/s. Using the methods outlined in Section 8.9, answer the following questions, assuming that model tests are made in freshwater (20C) and that prototype conditions are seawater (I 0C). a. To what speed in the prototype does the 1.45 m/s correspond? b. Wbat are the model skin friction drag and wave drag? c. What would the ship drag be in saltwater corresponding to the model test conditions in freshwater?
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