抄録
Frequent collisions occurred yearly in the Kanmon Strait, because of difficulty in navigating due to the frequent traffic passing along the curved fairway in the narrow channel with the strong tidal current. For the qurpose of offering the basis of the marine traffic improvement of this area, the present report first dealt with the phenomenal relation between the tidal current and the frequency of collisions occurred in 1962 to 1969. And for the purpose of proceeding to the analysis, second, the relations between the tidal current and the following three traffic factors observable in the short term traffic surveys were examined: Traffic volume, sailing speed, and the rate of the ship passed along the illegal routes.
