まき網漁船(116トン型)の動揺について-III : 横動揺予測値の運航上への利用

概要

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It is generally said that the stability information of a fishing boat during under way or fishing operation should be based upon the metacentric height, GM, and freeboard. These values are very important factors to regulate the ship rolling motion in waves and the safety of fishing. In the case of general fishing boat during operation or under way, however, it is difficult to estimate the value of GM with accuracy at all times. Therefore, the ship operators pay attention habitually to the periods of ship rolling on account of watching the stability. If the predicted characteristics of ship rolling which, with respect to the ship conditions, heading angles and sea conditions, may be obtained by means of reasonable calculation, these characteristics are available to avoid the extreme large heeling angles of the ship and to controll the value of GM. From the point of this view, the author predicted the characteristics of ship rolling in irregular waves by using the method of previous report and the results of practically main ship conditions are shown in Figs. (2)〜(8).
社団法人日本航海学会の論文
1978-08-25