Корвет ROKS Cheonan (PCC-772)

ROKS Cheonan (PCC-772) was a Pohang-class corvette of the Republic of Korea Navy (ROKN), commissioned in 1989. On 26 March 2010, she broke in two following an explosion and sank near the sea border with North Korea, killing 46 sailors. An investigation conducted by an international team of experts from South Korea, United States, United Kingdom, Canada, Australia, and Sweden concluded that Cheonan was sunk by a torpedo launched by a North Korean Yeono-class midget submarine.

Cheonan was launched in November 1989 from Korea Tacoma Marine Ind., Ltd., Masan, South Korea. The ship's primary mission was coastal patrol, with an emphasis on anti-submarine operations. Cheonan was one of the ships involved in the First Battle of Yeonpyeong in 1999. It is also known that the ship suffered slight damage on the stern in the First Battle of Yeonpyeong.

ROKS Cheonan is now a museum ship at the Pyeongtaek Naval Base. She is stationed near the patrol boat ROKS PKM 357 that was sunk in the Second Battle of Yeonpyeong.