Subsequently, numerous Japanese fishing boats crossing the line were seized by the Korean authorities one after another, resulting in several Japanese casualties. In July 1953, the Korean authorities fired at a patrol vessel of the Japan Coast Guard(JCG) that was sailing near Takeshima.
Since that time, the ROK has continued its illegal occupation of Takeshima, stationing security personnel and taking further unilateral actions, such as constructing lodgings, a monitoring facility, a lighthouse, a port and docking facilities on the islands.

[JCG patrol boat (middle) protecting fishing boat of Japan (front)
against Korean guard ship (far side)] (Photo: Japan Coast Guard)