Cheonan underway at sea in March 2010, three days before being sunk by a torpedo from a North Korean submarine.
|Name:||ROKS Cheonan (天安/천안)|
|Identification:||Pennant number PCC-772|
|Fate:||Sunk on 26 March 2010 at Coordinates:|
Salvaged in April 2010.Now a memorial/museum ship in Pyeongtaek.
|Class and type:||Pohang-class corvette|
|Length:||88 m (289 ft)|
|Draft:||2.9 m (9 ft 6 in)|
|Range:||4,000 nautical miles (7,400 km)|
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 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 miniature 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. The ship had been scheduled for decommissioning in 2019.
On 26 March 2010, an explosion occurred near the rear of Cheonan, causing the ship to break in two.The cause of this explosion was not immediately determined.
The 1,200 tonne ship started sinking at 21:20 local time (12:20 UTC) about 1 nautical mile (1.9 km) off the south-west coast of Baengnyeong Island in the Yellow Sea. The island is located on the South Korean (ROK) side of the Northern Limit Line, the de facto boundary dividing South from North Korea (DPRK). The ship had a crew of 104 men at the time of sinking, and a total of 58 crew were rescued. Another 46 crew were unaccounted for. Cheonan's captain, Commander Choi Won-il, said that the ship broke into two and the stern sank within five minutes after the explosion and while he was still assessing the situation. On 17 April 2010, North Korea denied any involvement in the sinking of Cheonan.
Initially six South Korean navy and two South Korean coast guard ships assisted in the rescue as well as aircraft from the South Korean air force. 27 that hopes of finding the 46 missing crew alive were fading. Survival time in the water was estimated at about two hours and large waves were hampering rescue attempts. The ship sank in 45 meter deep waters with a small portion of the overturned hull still visible above water. It was expected that it would take up to 20 days to salvage the ship.It was reported on March
During the course of the search and rescue effort over 24 military vessels were involved, Salvor, USS Harpers Ferry, and USS Shiloh.including at least three US Navy vessels, USNS
On 30 March 2010 it was reported that one South Korean naval diver (ROKN UDT/SEAL CWO Han Ju-ho) had died after losing consciousness whilst searching for survivors and another had been hospitalised.
On 3 April 2010, South Korean officials said that a private fishing boat involved in the rescue operations had collided with a Cambodian freighter, sinking the fishing boat and killing at least two people, with seven reported missing.The same day, the Joint Chiefs of Staff of South Korea said that one body of the 46 missing sailors had been found.
Later on 3 April 2010 South Korea called off the rescue operation for the missing sailors, after families of the sailors asked for the operation to be suspended for fear of further casualties among the rescue divers. The military's focus then shifted towards salvage operations, which were predicted to take up to a month to complete.
On 15 April 2010, the stern section of the ship was winched from the seabed by a large floating crane, drained of water and placed on a barge for transportation to the Pyongtaek navy base.The same crane raised the bow portion of Cheonan on 24 April 2010. The salvaged parts of the ship were taken to Pyongtaek navy base for an investigation into the cause of the sinking by both South Korean and foreign experts. The unsalvaged parts were left to break apart.
On 25 April 2010, South Korea's defense minister, Kim Tae-Young, said that the most likely cause of the explosion that sank Cheonan was a torpedo; his statements were the first time that a South Korean official publicly cited such a cause. Kim said that "A bubble jet caused by a heavy torpedo is thought to be the most likely thing to be blamed, but various other possibilities are also under review." A bubble jet is caused by an underwater explosion which changes the pressure of water, and whose force can cause a ship to break apart. The bubble jet theory was supported by one of the investigators into the incident, who had said that there was no evidence that an explosion had occurred in contact with a ship, and that a non-contact explosion had most likely broken the ship in half.
On 20 May 2010, a South Korean-led international commission investigating the sinking of Cheonan presented its findings, stating that the ship was sunk by a North Korean torpedo attack.The torpedo parts recovered at the site of the explosion by a dredging ship on 15 May, which include 5x5 bladed contra-rotating propellers, propulsion motor and a steering section, were claimed to perfectly match the schematics of the CHT-02D torpedo included in introductory brochures provided to foreign countries by North Korea for export purposes. The markings in Hangul, which read "1번" (or No. 1 in English), found inside the end of the propulsion section were said to have been consistent with markings on a previously obtained North Korean torpedo. However, some (The Hankyoreh) have pointed out without the proper reason that in the North, "호" (pronounced "ho") is most often used rather than "번"; and that a North Korean torpedo found seven years ago bears the marking "4호". Russian and Chinese torpedoes are marked in their respective languages. The CHT-02D torpedo manufactured by North Korea utilizes acoustic/wake homing and passive acoustic tracking methods. However, an expert at a South Korean missile manufacturer disagreed with the idea that the submarine alleged by ROK authorities to have shot the torpedo actually has the capability: "Sango class submarines are known to be used by North Korean commandos in infiltrating areas or laying mines, but they apparently do not have an advanced system to guide homing weapons. If a smaller class submarine was involved, there is a bigger question mark."
One member of the investigative team, Shin Sang-cheol, who would be summoned on charges of spreading unsubstantiated rumors, publicly expressed doubts by saying "The magnified photo of the evidence showed that the marking was written on the rusted surface. If it were the North who marked it, the marking should have been written on a smooth surface."The Ministry of Defense had earlier tried to remove Shin from the investigative team, saying that "He is not qualified to work as part of the investigation team, as he has been spreading malicious rumors, as well as lacks expertise and has been insincere in his participation in the probe."
On 13 September 2010, the final report was issued by JIG which concluded that, "The Cheonan was split and sunk due to a shockwave and bubble effect generated by the underwater explosion of a torpedo. The detonation location was three meters to port from the center of the gas turbine room and at a depth of 6-9 meters..."
North Korea denied that it was responsible for the sinking.China dismissed the official scenario presented by South Korea and the United States as not credible. An investigation by the Russian Navy also did not concur with the report. On 9 July 2010, the United Nations Security Council made a Presidential Statement condemning the attack but without identifying the attacker.
The ROKS Cheonan is now a museum ship at the Pyeongtaek Naval Base. It is stationed near the ROKS PKM 357 patrol boat that was sunk in the Second Battle of Yeonpyeong.
The ship's armament consisted of:
Cheonan was powered by a pair of MTU engines, which produced a total of 6,260 horsepower (4.67 MW). These engines powered two propellers, which could move the ship at a top speed of 30 knots (35 mph).
The Republic of Korea Navy, also known as the ROK Navy or South Korean navy, is the naval warfare service branch of the South Korean armed forces, responsible for naval and amphibious operations. The ROK Navy includes the Republic of Korea Marine Corps, which functions as a branch of the Navy. The ROK Navy has about 70,000 regular personnel including 29,000 Republic of Korea Marines. There are about 150 commissioned ships with the ROK Navy. The naval aviation force consists of about 70 fixed-wing and rotary-wing aircraft. The ROK Marine Corps has about 300 tracked vehicles including assault amphibious vehicles.
Chonan may refer to:
Hecht was the name of two "wolfpacks" of German U-boats that operated during World War II. The first operated during the Battle of the Atlantic from 8 May to 18 June 1942. They primarily attacked the Liverpool to Halifax convoys ONS 92 and ONS 100, and sank 14 ships for a total of 62,709 gross register tons (GRT).
The Donghae-class corvette is a class of four ships of the Republic of Korea Navy used for coastal patrol duties. Each corvette is armed with one Oto Melara 76 mm compact gun, three AA guns, six torpedoes and twelve depth charges for anti-submarine operations. The ships resemble the later Pohang class, but have slightly different armament.
The history of the Korean People's Navy is short compared to most modern navies. It began with the creation of a "Maritime Security Force" on June 5, 1946. The headquarters for the force was based in the North Korean city of Wonsan, and was operational by July 1946. The headquarters were then expanded and moved to the capital, Pyongyang, for more effective management of seabound traffic, and the forces were renamed Marine Patrols in December of the same year. The Marine Patrol Academy was established in Wonsan in June 1947 in order to train and commission a professional corps of naval officers.
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The Pohang-class corvette is a class of general purpose corvettes operated by the Republic of Korea Navy. They have served in a coastal defense role during the late Cold War and post Cold War period. A total of 24 Pohang-class vessels were built, all constructed in South Korea. 12 vessels remain in service in the ROKN as of 2020.
Events in the year 2010 in South Korea.
The ROKS Cheonan sinking occurred on 26 March 2010, when Cheonan, a Pohang-class corvette of the Republic of Korea Navy, carrying 104 personnel, sank off the country's west coast near Baengnyeong Island in the Yellow Sea, killing 46 seamen. The cause of the sinking remains in dispute, although evidence points to North Korea.
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ROKS Sokcho (PCC-778) is a South Korean Pohang-class corvette of the Republic of Korea Navy (ROKN). It was in the vicinity at the time of the sinking of the ROKS Cheonan and is reported to have fired shots at a possible target that it identified at that time.
When the South Korea-led international investigation's report on the sinking was released on 20 May 2010 there was international condemnation of the North's actions. China was an exception as they simply termed the incident "unfortunate" and "urged stability on the peninsula." This was speculated to be China's concern for instability on the Korean peninsula. Christian Oliver stated in The Financial Times that South Korea needs to explain why its navy started shooting northwards immediately, thus risking starting a war, and give reassurance on the competence of predominantly conscript forces.
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