一方通航型港湾における航路側端航行の操船困難性減少効果の検討

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The advantages of one-way through port in comparison with the usual dead end traffic port have been discussed in the previous reports. This paper took up the idea of keeping to the right of the fairway as a measure to reduce the conflict with the other ships in the process of proceeding in the fairway and leaving the fairway for the berth in advance. Marine traffic simulation was conducted to examine the difference of maneuvering difficulty by keeping to the right of the fairway, and the effect on maneuvering difficulty reduction of keeping to the right of the fairway was evaluated quantitatively by applying the Environmental Stress Model. Several important conclusions were drawn as follows : (1) The conflict with other ships can be reduced obviously by keeping to the right of the fairway in the process of proceeding in the fairway and leaving the fairway for berth. (2) The smaller the ship's size is, the more remarkable effect on maneuvering difficulty reduction of keeping to the right of the fairway have. (3) The trends of maneuvering difficulty reduction approximate to the exponential function, and the estimated equations for reduction ratio of Latent Environmental Stress were obtained about leaving for berth by clockwise and alongside starboard, proceeding in the fairway without breakwater and with breakwater respectively. (4) The Latent Environmental Stress imposed on the mariner can be reduced 20% to 30% by removal of a facing traffic lane. (5) When other ships traffic was supposed to follow random distribution, although the reduction ratio of Latent Environmental Stress was less than the case of the normal distribution, the trend of effect of maneuvering difficulty reduction was the same as that of the normal distribution.
社団法人日本航海学会の論文
2003-09-25

一方通航型港湾における航路側端航行の操船困難性減少効果の検討

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