ROKS Cheonan (PCC-772) is a small, agile warship in the Republic of Korea Navy. It was built in South Korea and commissioned in 1989. The ship is named after a South Korean city, and it's part of a group of similar ships.
Cheonan's main job is patrolling coastal waters, especially near North Korea. It can also do three types of missions: hunting submarines, attacking enemy ships, and defending against air threats. To find enemy submarines, it has special sensors and weapons like torpedoes and depth charges. For attacking ships, it has missiles and big guns. It also has smaller guns for air defense.
The ship is powered by strong engines that let it go up to 30 knots (about 34 miles per hour). It can carry around 105 crew members and officers.
In 2010, Cheonan was patrolling in the Yellow Sea when it had a serious accident. An explosion broke the ship into two parts, and the back sank quickly. The water was very cold, and it was hard for survivors to stay alive. The ship sent out an S.O.S. message with its location. South Korea sent rescue ships and aircraft to help.
Builder: Korea Tacoma Marine Ind., Ltd.; Masan, South Korea
Launched: January 1989
Identification: Pennant number PCC-772
Fate: Sunk on 26 March 2010 at 37°55′45″N 124°36′02″E
Status: Salvaged in April 2010. Now a memorial/museum ship in Pyeongtaek.
Class and type: Pohang -class corvette
Displacement: 1,200 tonnes
Length: 88 m (289 ft)
Draft: 2.9 m (9 ft 6 in)
Propulsion: CODOG unit
Speed: Maximum 32 knots (59 km/h); Cruising 15 knots (28 km/h)
Range: 4,000 nautical miles (7,400 km)
4 × Harpoon missiles
2 × OTO Melara(76mm)/62 compact cannon
2 × Breda 40mm/70 cannon
6 × Mark 46 torpedoes
12 × Mark 9 depth charges