2006 年 41 巻 2 号 p. 264-269
Today, 1350 ship collision incidents occur in Japan in one year. This means that four collisions occur every day. Thesecases not only risked the loss of human life, but also developed into serious oil spills. Oil spill from ships can cause veryserious on the financial and environmental damage, as well.
Causes of these incidents are investigated and it is usually concluded, from the psychological and medical viewpoints, tobe operator error. After those incidents, it is very important to perform research for developing and improving safetydevices or systems and for understanding recurrence of incidents. An Event Tree Analysis method of compoundingmaritime incidents, especially those including oil spill and casualties after a collision is introduced.