ウェザールーティングシステムの構築に関する研究-I : アブログによる推進性能の推定

概要

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A ship's abstract logbook contains a lot of useful information on the outline of navigation. Previous studies on the abstract logbook have focused on the long term performances of the objective ship. In this paper, simple methods for estimating and evaluating ship's propulsive performance at seas are proposed by analyzing the abstract logbook data for comparatively short term. The target ship is a container ship of 6,200TEU with the abstract logbook records for 6 voyages in winter 2007. The engine power at calm sea is estimated from the logbook data analyzing the ship resistance, the resistance increase and the sea margin. It is also demonstrated that the proposed method is useful to evaluate the actual ship performance. And, this method is capable of providing a way to determine an operation guideline, by connecting the change of engine power and propeller revolution with ship's speed and sea margin as well as introducing the effective engine performance chart.
2009-09-25