The Function of the Hazard map to reduce Marine Accidents

Abstract

In the section of marine accident investigation on Japan Transport Safety Board, we investigate marine accidents and study preventing the occurrence of them. In recent years, accidents hardly decrease. There are about 1000 marine accidents and over 500 casualties per year. From investigation data, we found out that marine accidents, especially collisions occurred at similar place and from similar cause. Collisions cause not only losses of lives and properties but the environment pollutions. Therefore we made a Hazard map of Marine Accidents and showed it on the internet. It displays accident points on the map. The map notifies the ship operator to cross the area where marine accident occurred in the past, and can motivate the ship operator to navigate carefully and safely when passing the area. In this study, we consider the display method which is easier to understand the risk about collisions. Firstly, we classify collisions into 3 categories by encounter type. Then we proposed displaying using traffic density and kernel density estimation from collision locations.