船舶の遭遇海象と船体運動の実態-II : 北太平洋航路就航コンテナ船による連続計測

概要

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Ship needs a long time to sail across the ocean and often falls in with severe rough weather. And ship pitches and rolls violenently in rough sea on the way. In the past and the present, winds, waves and ship's motions have been described by crew every 4 hours. Authors developed a voyage recorder which automatically measures and records the data of encounter winds, waves and ship's motions. Each data is measured at interval of 0.5 second for 10 minutes every hour. In the previous paper, the reliability and availability of this measuring system made by onboard experiments was reported. In this paper, some analyzed information which was extracted from the recorded data is reported. That is (1) actual quantity of ship encouter waves and ship's motion, (2) occurrence distribution of those data in every region and in every season, (3) the relation of the average and the most severe quantity, (4) actual performance curve (ship speed reduction by waves) and (5) the relation of the measured and the visual wave height by crew are presented.
社団法人日本航海学会の論文
1995-03-25