避航操船における視認方法の信頼性について

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書誌事項

タイトル別名
  • Reliability of Watch Systems in Collision Avoidance
  • ヒコウ ソウセン ニ オケル シニン ホウホウ ノ シンライセイ ニ ツイテ

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説明

The author assumed that collision of ships shall be caused by failure of watch system which is composed between the time of discovering a ship and the time of collision. Therefore, the interval of the time is a life of the system. Data of the times were collected, and the reliabilities of watch systems were analyzed by Weibull distribution. Watch systems were classified into watching vessels in day time, watching lights in night, and watching by radar. The conclusions are as follows. 1) The assumption that collision of ships is caused by failure of watch system is acceptable. 2) Motarity of watching vessels system in day time is caused by fatigue failure until the time of 5 minutes, motarity after the time of 5 minutes is caused by random failure. 3) Motarity of watching lights system in night is complexed of fatigue failure and random failure. 4) The watching system with human's eye and radar image may has the supperior reliablity.

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