居眠り海難の分析-I : 居眠り要因分析

概要

論文の詳細を見る
From the decision for marine casualty, 524 accidents had been caused by dozing watch-keepers for recent 10 years in Japan. For the purpose of analysing origin of these accidents, it was attempted to investigate why these watch-keepers had fallen into doze. The process of each accident was described from short sentences rewrited according to reports of decision. 33 items revealed from studies on sleep and watch-keeper's drowsiness were coded from this process. Factor analysis on these items explained statistically significant 8 and 17 items, and then, factor analysis on these two groups of items extracted 3 and 6 factors. Those factors were Poor sleepness, Fatigue on work, Mental stress, Desease, Lost tension, Air-condition, Career and age, Ultradian rhythm, and Stimulation. The score of them were evaluated by means of multiplying factor by standardized score of items. Comparing the rate of high scored cases in fishing vessel with that in another vessel, it was clear that fishing vessel was higher on factors of Poor sleepness and of Fatigue on work, and lower on factors of Desease and of Air-condition.
社団法人日本航海学会の論文
1992-09-25