Even now that various navigation instruments have been developed, collision accidents between fishing vessels and general power-driven vessels at sea occurs repeatedly. According to the Transportation Safety Committee “Fune to umi,” (Marine Accident Inquiry Safety Investigation Association) at the end of July 2016, there were 491 cases of ship accidents in Japan in 2016. Fishing vessels accounted for 163 of these cases, approximately 33% of the total accidents. This study, we have carried out a questionnaire addressing three points: (1) Fishing vessels' awareness of other vessels, (2) Determining if fishing vessels were power-driven when they were not engaged in fishing, (3) The distance fishing vessels crews keep to avoid other vessels.
The results were as follows: (1) The difference in awareness between light time and dark time, a state in which look out conditions are poor (over half), (2) Approximately 20% of respondents recognized “fishing vessels” = (equal) “vessel engaged in fishing,” (3) Although it depends on the age of the fishermen and how experienced they are, approaching another ship up to 500 m, they think about avoidance actions, and it was found that there was a high possibility of some action to be performed.
Previous studies mentioned that there is a difference in the timing of "Risk of collision" between general power-driven vessels and fishing vessels, and in the Act on Preventing Collisions at Sea (Kaijyoshototsuyobouho), because there are no rules determining aversion using vessel size. It is clear that one cause of collisions is due to the time difference when there is a possibility of "Risk of collision." In the future, it is necessary to verify the law by considering the size of the vessel further.
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