National Institute of Scientific Investigation, Eastern District Office, Korea. Parkws01@nisi.go.kr

The civilization has given us a great comfort and convenience but also it has been threatening our life at the same time. Recently among these causes of death the traffic accident is the most dangerous thing to threat our life. Most traffic accidents happen on the road but are increasing on the sea and river recently. Accordingly this paper presents an accident example for a boat collision accident which was anlalyzed from the evidences drawn by forensic medical and scientific methods for a passenger death accident by a collision between two boats. The forensic medical accident interpretation was made up by autopsy and drug toxicology inspection. A person who has met an unnatural death at the accident time was drunken condition. The cause of death was judged by the multiple viscera injury, and presumed to be killed by applying an high external force. In order to perform a forensic scientific analysis, we investigated the passenger's life jacket that a person killed in the accident was wearing and also investigated the external appearance of two boats which have 150h.p and 130h.p. Through comparing the position of two boats with the direction of impact on the surface of the water, we could assume that the 130h.p boat impacted the tail on the right side of 150h.p boat with constant acceleration or constant velocity.

Key Words : Motor boat, Collision