ROKS Cheonan (PCC-772)
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ROKS Cheonan (PCC-772)
ROKS ''Cheonan'' (PCC-772) was a 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.North Korea rebuffs South Korea's evidence on ''Cheonan'' attack
Christian Science Monitor, May 20, 2010.


History


Service history

''Cheonan'' was
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2010
File:2010 Events Collage New.png, From top left, clockwise: The 2010 Chile earthquake was one of the strongest recorded in history; The Eruption of Eyjafjallajökull in Iceland disrupts air travel in Europe; A scene from the opening ceremony of the 2010 Winter Olympics in Vancouver, British Columbia, Canada; The Deepwater Horizon drilling rig explosion and subsequent oil spill becomes the worst marine oil spill in history; Spectators watch a football match with their famous vuvuzelas during the 2010 FIFA World Cup, which was held in South Africa; people entering the White House in Bishkek on 7 April during the Kyrgyz Revolution of 2010; the remains of Tu-154 after crash on April 10, 2010 that killed Polish president Lech Kaczyński; a child is treated for injuries following 2010 Haitian earthquake which killed an estimated 100,000 - 250,000 people., 300x300px, thumb rect 0 0 200 200 2010 Chile earthquake rect 200 0 400 200 2010 eruptions of Eyjafjallajökull rect 400 0 600 ...
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Yono-class Submarine
The Yono-class submarine (occasionally confused with Yugo-class) is a class of North Korean miniature submarines, produced for domestic use as well as for export. Also referred to as the Yeono class, these submarines displace 130 tons, significantly less than North Korea's larger 1,800-ton s.North Korea rebuffs South Korea's evidence on Cheonan attack
Christian Science Monitor, 20 May 2010.
As of May 2010, North Korea is reported to operate ten of these submarines. Iran is reported to have at least one Yono submarine and to have copied the design as the Ghadir-class.
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Cambodia
Cambodia (; also Kampuchea ; km, កម្ពុជា, UNGEGN: ), officially the Kingdom of Cambodia, is a country located in the southern portion of the Indochinese Peninsula in Southeast Asia, spanning an area of , bordered by Thailand to the northwest, Laos to the north, Vietnam to the east, and the Gulf of Thailand to the southwest. The capital and largest city is Phnom Penh. The sovereign state of Cambodia has a population of over 17 million. Buddhism is enshrined in the constitution as the official state religion, and is practised by more than 97% of the population. Cambodia's minority groups include Vietnamese, Chinese, Chams and 30 hill tribes. Cambodia has a tropical monsoon climate of two seasons, and the country is made up of a central floodplain around the Tonlé Sap lake and Mekong Delta, surrounded by mountainous regions. The capital and largest city is Phnom Penh, the political, economic and cultural centre of Cambodia. The kingdom is an elective co ...
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Republic Of Korea Air Force
The Republic of Korea Air Force (ROKAF; ko, 대한민국 공군; RR: ''Daehanminguk Gong-gun''), also known as the ROK Air Force or South Korean Air Force, is the aerial warfare service branch of South Korea, operating under the Ministry of National Defense of the Republic of Korea. History 1940s Shortly after the end of World War II, the South Korean Air Construction Association was founded on August 10, 1946, to publicize the importance of air power. Despite the then-scanty status of Korean armed forces, the first air unit was formed on May 5, 1948, under the direction of Dong Wi-bu, the forerunner to the modern South Korean Ministry of National Defense. On September 13, 1949, the United States contributed 10 L-4 Grasshopper observation aircraft to the South Korean air unit. An Army Air Academy was founded in January 1949, and the ROKAF was officially founded in October 1949. 1950s The 1950s were a critical time for the ROKAF as it expanded tremendously during the Korean ...
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Baekryong Location 2
Baengnyeong Island (sometimes spelled Baekryeong; ) is a , long and wide island in Ongjin County, Incheon, South Korea, located near the Northern Limit Line. The 1953 Korean Armistice Agreement which ended the Korean War specified that the five islands including Baengnyeong Island would remain under United Nations Command and South Korean control. This agreement was signed by both North Korea and the United Nations Command. Since then, it has served as a maritime demarcation between North and South Korea in the Yellow Sea. It has a population of approximately 4,329. The meaning of its name is "white wing island", since the island resembles a flying ibis with its wings spread. Given its proximity to North Korea, it has served as a base for intelligence activity by South Korea. Numerous North Korean defectors have also boated here to escape economic and political conditions in their homeland. In the recent past there have been several naval skirmishes between the two c ...
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Commander
Commander (commonly abbreviated as Cmdr.) is a common naval officer rank. Commander is also used as a rank or title in other formal organizations, including several police forces. In several countries this naval rank is termed frigate captain. Commander is also a generic term for an officer commanding any armed forces unit, for example "platoon commander", "brigade commander" and "squadron commander". In the police, terms such as "borough commander" and "incident commander" are used. Commander as a naval and air force rank Commander is a rank used in navies but is very rarely used as a rank in armies. The title, originally "master and commander", originated in the 18th century to describe naval officers who commanded ships of war too large to be commanded by a lieutenant but too small to warrant the assignment of a post-captain and (before about 1770) a sailing master; the commanding officer served as his own master. In practice, these were usually unrated sloops-of-war of no ...
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Captain (naval)
Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The rank is equal to the army rank of colonel and air force rank of group captain. Equivalent ranks worldwide include ship-of-the-line captain (e.g. France, Argentina, Spain), captain of sea and war (e.g. Brazil, Portugal), captain at sea (e.g. Germany, Netherlands) and " captain of the first rank" (Russia). The NATO rank code is OF-5, although the United States of America uses the code O-6 for the equivalent rank (as it does for all OF-5 ranks). Four of the uniformed services of the United States — the United States Navy, United States Coast Guard, United States Public Health Service Commissioned Corps, and National Oceanic and Atmospheric Administration Commissioned Officer Corps — use the rank. Etiquette Any naval officer who commands a ship is addressed by naval custom as "captain" while aboard in command, regardless of their actual rank, even ...
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Northern Limit Line
The Northern Limit Line or North Limit Line (NLL) – 북방한계선 (in ROK) – is a disputed maritime demarcation line in the Yellow (West) Sea between the Democratic People's Republic of Korea (DPRK) on the north, and the Republic of Korea (ROK) on the south. This line of military control acts as the ''de facto'' maritime boundary between North and South Korea.Elferink, Alex G. Oude. (1994). Description The line runs between the mainland portion of Gyeonggi-do province that had been part of Hwanghae before 1945, and the adjacent offshore islands, including Yeonpyeong and Baengnyeongdo. Because of the conditions of the armistice, the mainland portion reverted to North Korean control, while the islands remained a part of South Korea despite their close proximity. The line extends into the sea from the Military Demarcation Line (MDL), and consists of straight line segments between 12 approximate channel midpoints, extended in an arc to prevent egress between both sides ...
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Yellow Sea
The Yellow Sea is a marginal sea of the Western Pacific Ocean located between mainland China and the Korean Peninsula, and can be considered the northwestern part of the East China Sea. It is one of four seas named after common colour terms (the others being the Black Sea, the Red Sea and the White Sea), and its name is descriptive of the golden-yellow colour of the silt-laden water discharged from major rivers. The innermost bay of northwestern Yellow Sea is called the Bohai Sea (previously Pechihli Bay or Chihli Bay), into which flow some of the most important rivers of northern China, such as the Yellow River (through Shandong province and its capital Jinan), the Hai River (through Beijing and Tianjin) and the Liao River (through Liaoning province). The northeastern extension of the Yellow Sea is called the Korea Bay, into which flow the Yalu River, the Chongchon River and the Taedong River. Since 1 November 2018, the Yellow Sea has also served as the location of "peace ...
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Baengnyeong Island
Baengnyeong Island (sometimes spelled Baekryeong; ) is a , long and wide island in Ongjin County, Incheon, South Korea, located near the Northern Limit Line. The 1953 Korean Armistice Agreement which ended the Korean War specified that the five islands including Baengnyeong Island would remain under United Nations Command and South Korean control. This agreement was signed by both North Korea and the United Nations Command. Since then, it has served as a maritime demarcation between North and South Korea in the Yellow Sea. It has a population of approximately 4,329. The meaning of its name is "white wing island", since the island resembles a flying ibis with its wings spread. Given its proximity to North Korea, it has served as a base for intelligence activity by South Korea. Numerous North Korean defectors have also boated here to escape economic and political conditions in their homeland. In the recent past there have been several naval skirmishes between the two countries ...
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Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change also a ...
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