| Summary: | This thesis describes a study on an alternative strip method for a laterally drifting ship in waves. Currently, in an attempt the seakeeping performance, Faizul A. A. (2006) has included the lateral drift caused by wind forces and/or wave drifting forces in his studies of New Strip Method. Thereby, this research will validate the ship motions results from previous study that analyse on symmetrical body. On the other hand, this research will investigate the unsymmetrical body, including the consideration of lateral drift effect. Hence, offset data of several angles were obtained from the SR108 containership model. The mathematical formulations have been derived to suit with unsymmetrical body with lateral drift effect case. In addition, modifications on the computer program were carried out. Then, computed results of this research were than being compared to the results from previous study. It is found that there is a disagreement between the findings from both studies. Based on the researcher's investigation, this is due to some problems related to wave exciting forces.
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