South Korea's navy Wednesday located a sunken ship as the search for 14 missing crew continued for the second day in rough waters off South Korea's south coast, Yonhap news agency reported. The Eastern Bright freighter, carrying 2,000 tons of nitric acid, disappeared at sea Tuesday off Yeosu port, 450 kilometres south of Seoul, according to DPA. A naval vessel located by sonar a freighter presumed to be the Eastern Bright 20 miles east of Geomun Island, reported Yonhap, quoting the Naval Operational Command station in Busan. One sailor from Myanmar was rescued but 12 Koreans and two Myanmarese are still missing from the ship that left Yeosu late Monday night and was on its way to Taiwan when it sent an SOS signal at 4:20 am Tuesday. Geomun island is located 114.7 kilometres from Yeosu. Rescue efforts by 25 vessels, one helicopter and one airplane were being hampered by bad weather, the likely cause of the sinking, police told Yonhap. South Korea experienced its worst-ever oil spill earlier this month when a tanker leaked 10,500 tons of oil into the waters off the west coast after colliding with a barge.