折損タンカーの波漂流力と漂流運動

概要

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Russian tanker named Nakhodka sank in the Japan Sea January in 1997. The leaked heavy oil was washed up to the coast and considerable damage was brought about. The bow part of Nakhodka was separated and drifted for about 5 days in the Japan Sea. In this paper, experimental result of drift force and drift motion in waves concerning bow part of tanker model like Nakhodka is described. The measurement of the wave drift force was made using the model supported by the weak spring. The measurement system giving the reaction force which matches with the steady drift force was adapted. The torque motor was used in the measurement of electromechanical method. The wave drift motion of model ship was measured by automatic tracking system using the TV camera. Quite interesting results were obtained by this experiment. There exists a multiple ship stable status during drifting. The ship drifts in the rectangular and opposite direction with the wave coming direction in some cases. As the tank experiments on wave drift force and drift motion of the very abnormal shaped ship like Nakhodka have not been so far carried out anywhere, those data are considered to be quite valuable.
社団法人日本船舶海洋工学会の論文
2002-03-20