 Kim, commanding "Chungmu" on a security mission at Japan Sea, encountered the North Korean vessel on territorial waters between the 38th parallel and Ulleungdo, and sank it with bombardment after a three-hour chase.For the victory of "Chungmu", Kim received the Hwarang's Order of Military Merit.On January 31, 1967, Kim ended his tenure as the captain of "Chungmu", and was assigned to a naval station () as its chief of staff in 1968.