小型カーフェリーの模型試験 : 199G.T.型カーフェリーと両頭型カーフェリー

概要

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Model tests were carried out using two models ; one is a 199G.T. car-ferry with a twin skeg stern form, and the other is a double ender car-ferry. The hull form of the twin skeg ship is determined through a modification of hull form on a car-ferry with single propeller. The objective of the tank test using the twin skeg ship model is to reduce stern vibration and to improve a propulsive performance. The aim of the model test using the double ender hull ship is to investigate the resistance due to the freely rotating bow propeller. Since we are interested in a wave pattern caused by a unusual hull form like a double ender ship, we also measured wave profiles. Furthermore, for the purpose of the reduction of waves caused by a double ender ship, appendages are attached to bow and stern and its waves were also measued. The test results of the twin skeg ship show that stern vibratory forces are reduced and the propulsive performance are successfully improved. From the results of the tank test on the double ender ship, we find that the component of resistance due to the freely rotating bow propeller is about 8% of the total resistance. But there is little different between the wave patterns caused by the original double ender ship and the appendage-attached
独立行政法人海上技術安全研究所の論文
1993-05-30