||Lars Larsson, Hoyte C. Raven
||Society of Naval Architects and Marine Engineers
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One of the most serious problems of contemporary naval architecture is the correct prediction of the resistance of the newly developed designs at the earlier stages of the project. At the time of the ordering of the new vessel, a contract that contains the technical specification is signed between the yard and the future ship owner. Among the most important specifications is the contract speed of the ship, i.e. the speed attained to the particular power consumption during the sea trials carried out straight after the delivery. Subject trials are supposed to be carried out under the ideal weather conditions. However, in the real life numerous corrections have to be made to the influence of the various environmental factors. In case corrected speed of the vessel appears to be lower than the one specified in the contract, the shipyard will have to pay a penalty to the ship owner, and this penalty will mainly depend on the difference noted between the contract speed and the speed achieved during the trials. And, should this difference be too large, ship owner may even refuse to accept the newly built ship. This volume covers all aspects of the ship resistance and flow, including the governing equations, resistance decomposition, types and proof of similarity, flow around the ship hull. experimental prediction of the hull resistance and its numerical prediction and others.