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Marine tourism has been essential in the tourism industry for many years. The marine tourism sector plays an essential role in the Indonesian economy. An example of the marine tourism industry is in t...he Lombok islands, West Nusa Tenggara. The role of ships as a means of transportation and recreation is vital in the marine tourism industry. However, there are still many uses for ships with traditional hulls that need better hydrodynamic performance. Therefore, it is necessary to research the hull model of recreational ships (leisure boats) to improve hydrodynamic performance so that the role of ships as a means of recreation and transportation can make passengers and tourists safer and more comfortable. This study discusses the influence of hull dimensions and shape variations on hydrodynamic performance using five reference vessels with Length Over All (LOA) of 9-10 m. Regression analysis methods are carried out to produce three-dimensional variations and combine four types of hulls: Shallow V, Deep V, Round Hull, and Flat Bottom Hull. The dimension and shape variation will result in twelve model hull variations. Each model is simulated and analyzed for hydrodynamic performance using sensitivity analysis to determine the influence of variations in hull dimensions and shape determination of the best model from twelve hull variations using the multi-attribute decision-making (MADM) method. The results of MADM found that the hull with the Shallow V model has the best hydrodynamic characteristics and dimensional variations in the hull shape significantly influence the ship's hydrodynamic performance. The results are expected to optimize the hydrodynamical performance of the Leisure Boat.show more
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