関門海峡における衝突海難と気象との関係

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概要

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• The recent abrupt increase in the sea accidents was due to the increasing marine traffic congestion for the purpose of supporting our rapidly developed economic activities. It is of urgent necessity to establish a countermove for the accidents, especially for the collision. The causality, of the accidents is complicated and differs case by case. Respective cases of accidents were examined in detail with much effort and time. But there lacks a consideration in broad aspects. And this report dealt, statistically, with the influence of the meteorological conditions on the frequencies of the collisions occurred in the Kanmon Strait during the period from 1962 to 1969. And the results obtained were summarized as follows: 1. The collision inclined to occur under the wind from SE or from NW, and that of weaker than 1.6m/s (especially, for the ships smaller than 3,000G.T. in the eastern half) or stronger than 10.8m/s (especially, in winter and spring, in the central area, for the ships smaller than 1,000G.T.) 2. More than 70% of the collisions occurred under the good visibility (better than 4km). When the different time length according to the visibility was taken into account, the poorer visibility than 4km inclined to induce the collisions (especially, in winter and spring, in the Hayatomo Seto, the western and the eastern areas, for the ships of the 100 to 1,000G.T. class). 3. The number of collisions per unit time under the poor visibility (poorer than 2km) was about 8 times as large as that under the good visibility (better than 2km). 4. The ships of the 100 to 1,000G.T. class were concerned with about 80% of the the collisions under the poor visibility; and about 55% of the collision under the poor visibility were those by the pair of the ships of this class. 5. The collision rate per ship passed (P_<PV>) under the poor visibility increased in accordance with the size of ship (x in gross tons) keeping the following relation: P_<PV>=0.10x^<0.79>×10^<-4> 6. The size of the ship had a clear relation to the influence of the visibility. Namely, the value of P_<PV> was 2.17x^<0.20> times as high as that under the good visibility.

• 1972-08-30

著者

• 神鳥 昭

  水産大学校

関連論文

• 大瀬戸付近における船舶の通航実態(日本航海学会第38回講演会)
• 早鞆瀬戸における船舶の通航実態(日本航海学会第36回講演会)
• ブロツク式建造漁船における船内磁場の分析(日本航海学会第33回講演会)
• 関門海峡中部水域における船舶交通と漁船操業の実態
• 関門海峡における風速・視程の出現頻度および衝突海難に及ぼす影響
• 関門海峡における乗揚海難と気象との関係
• 関門海峡における乗揚海難の動向
• 関門海峡通航船に及ぼす潮流の影響 : 特に衝突海難との関係について
• 関門海峡における衝突海難と気象との関係
• 関門海峡における衝突海難の分析(日本航海学会第44回講演会)
• 関門海峡大瀬戸における船舶通航速力の実態(日本航海学会第39回講演会)
• 関門港東口付近における船舶交通と漁船操業の特性
• 関門港西口付近における船舶交通特性
• 港外仮泊船の動静に関する統計的研究 : 六連泊地をモデルとした錨泊船の調査・解析
• 海上交通事故(海上交通工学)
• ブロツク式建造漁船における船体磁場の経年変化-I(日本航海学会第37回講演会)
• 定置漁具のレーダー映像について-II : シイラづけ探知障害についての考察(日本航海学会第35回講演会)
• 定置漁具のレーダー映像について-I : シイラづけのレーダー映像と探知距離(日本航海学会第31回講演会)

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