Abstract
This study examined actual drifting ships caused by the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami in Otsuchi and Kirikiri fishing port coasts in Iwate prefecture, Japan. Moreover, this study calculated reproduction simulations using actual drifting ships, and investigated the disaster risk of drifting ships by tsunami in this area. The analysis of actual drifting ships showed that the distances from the coastline to the final position of drifting ships have a correlation with whole length of ships. We proposed the verification method using these correlations, this method indicated applicably to actual field in reproduction simulations. In the risk analysis using numerical simulations, we showed that whole inundation area is exposed to the risks by drifting ships, the area behind road embankments is at lower risk.
