sentences:  ROKN minesweeper "YMS-509", patrolling the area near Okgye, tried to prevent disembarkation, but after a short battle, North Korean minesweeper "No 31" was forced to withdraw to the south.Totally, in these landing operations the North Korean Navy lost 1 transport and 2 schooners (last two was sunk by ROKN "YMS-509").July 2, 1950, at 06