On July 30, 1960, ROKS "Gangwon" (DE 72), formerly , sank the North Korean navy patrol craft "PBS 371" off the coast of Geojin. On January 19, 1967, ROKS "Dangpo" (PCE 56), the former USS "Marfa", was sunk by North Korean coastal artillery north of the demarcation line off the east coast of Korea. In June 1970, a Navy broadcast vessel ("I 2") was captured and abducted by North Korean patrol craft in the vicinity of Yeonpyeong Islands in the West Sea (Yellow Sea).