パイロット操船から見た針路不安定の許容限界に関するシミュレータスタディ-II : 外乱下の操船

概要

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The results of the simulator study on an allowable limit of directional instability of ships were presented in the first report. The limit is very important for the maneuverability standards to be discussed at the IMO and the results of further study is now introduced. To estimate the allowable limit of directional instability more clearly further maneuvering simulations were carried out as a cooperated research program between the Japan Pilots' Association and Hiroshima University. The maneuvers by pilots in the narrow channel and the port with complicated external disturbances are now examined carefully and the relation between the maneuverability and the navigational difficulty is estimated. It is finally pointed out that the directional instability is more severe for the maneuvers in the curved narrow channel than the port and the permissible limit is about the instability with the unstable loop width of 7.5 degrees for the ships of 20,000 tons and 12 knots.
社団法人日本航海学会の論文
1991-09-25