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). Chumunjin battle July 2, 1950, at 06:15 of the morning South Korean Support Group (cruisers USS Juneau & HMS Jamaica, frigate HMS Black Swan) sighted a North Korean Navy convoy (four torpedo boats, two motor gunboats and ten motor trawlers loaded with ammunition) heading north from Chumunjin. As the cruisers put on speed to intercept the enemy, the torpedo boats, with more bravery than discretion, turned to attack. Fire was opened at 11,000 yards, and by the time the range had closed to 4,000 one PT had been sunk ("No 24") and one stopped ("No 22"), a third was heading for the beach ("No 23"), and the fourth ("No 21") was escaping seaward. The final score of the engagement was three torpedo boats and both gunboats destroyed, and two prisoners taken by HMS Jamaica. Following this first engagement with the North Korean Navy, also in effect the last, the cruisers bombarded shore batteries at Kangnung. Reported 2016 submarine sinking On March 11 2016 CNN and the U.S. Naval Institute News reported that unnamed US officials believed a North Korean submarine had been lost at sea in the Sea of Japan. According to reports, the U.S. military had been observing the submarine when it "stopped" before the North Korean navy was observed searching the area by American satellites, aircraft and ships. See also Korean People's Navy References Korean People's Navy Military history of North Korea Naval history of Korea Navy