避航操船における見張り特性に関する研究-I.

概要

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In order to make a rational countermeasure against maritime collisions, seafarers' characteristics on lookout in collision avoidance have been investigated. The function of the lookout is categorized into four factors, which are Detection, Recognition, Prediction and Planning of avoidance. The characteristics of the detection are discussed in this study. The detection means detecting presence of vessels. Lookout range and detection range are applied to indexes in order to study the characteristics. The followings are verified. High traffic density or restricted visibility makes mariners use a short radar range therefore the range of detected vessels is close to their own vessel. The detection range can be expressed by an exponential function of the Napier's constant which makes the traffic density to be as a parameter. The detection range is 63±17% of used radar range.
社団法人日本航海学会の論文
2008-03-25