内航タンカーの波浪中性能に関する模型試験

概要

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Recently, as a part of the work for improving the profitability of coastal shipping, a study of hull form has been conducted for 699 G. T. tanker, and about 20 % of power reduction in still water was achieved, making a comparison between a conventional ship and the newly developed one. The authors presented the details of this study in the previous paper. It is well noticed, however, that the newly developed ship should be examined not only into the performances in still water but in waves. Comparative model tests were then carried out in regular head waves. On the newly developed ship, heave and pitch motions and vertical acceleration at bow were found to be slightly greater than those of the conventional one. This suggested that the smaller water plane area in the fore-part of the ship, which was expected to give the lower wave-making resistance, resulted in the greater longitudinal ship motions. The OSM calculation also showed the similar feature. The advantage in propulsive performance of the newly developed ship will surely overcome the minor defect in the behavior in waves. In this paper, the results of the model tests in regular head waves are presented.
独立行政法人海上技術安全研究所の論文
1990-03-30