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The Ocean ships were a class of sixty cargo ships built in the United States by Todd Shipyards Corporation during the Second World War for the British Ministry of War Transport under contracts let by the British Purchasing Commission. Eighteen were lost to enemy action and eight to accidents; survivors were sold postwar into merchant service.
Type 744 buoy tender and its derivatives with the NATO reporting name Yannan (延南) class is a class of Chinese buoy tender that is in service with the People's Liberation Army Navy (PLAN) and Chinese civilian governmental establishments. It is a boat or vessel which services and replaces buoys.
Type 991 cable layer is a family of Chinese cable layers first saw service in Chinese navy, and later on, additional units also entered service with Chinese civilian authorities.
Type 912 degaussing/deperming ship is a class of degaussing/deperming ship of the People's Liberation Army Navy (PLAN) with many derivatives. Type 912 is also the most numerous degaussing/deperming ship in PLAN.
Type 904 dive tender is a class of Chinese dive tender designed the People’s Republic of China (PRC) for the People's Liberation Army Navy (PLAN), and the late models Type 904I and Type 904II have received the NATO reporting name Kanqiang.
Type 645 oceanographic research ship is an oceanographic ship developed by China for the People's Liberation Army Navy (PLAN) and other Chinese civilian establishments. Type 645 was an experimental program of the Fourth five-year plan of China and designed by the 2nd Directorate of 708th Institute of China State Shipbuilding Corporation, which is also more commonly known as China Shipbuilding and Oceanic Engineering Design Academy (中国船舶及海洋工程设计研究) nowadays. Construction begun in October 1977 and the ship was launched in October 1978, entering service with PLAN in December 1978. There are a total of twelve laboratories on board totaling 257 square meters. Deployment proved that the design was successful, and three more units were built for civilian use, named as Xiangyanghong 9, Xiangyanghong 14 and Xiangyanghong 16 respectively. However, on May 2, 1993, Xiangyanghong 16 was rammed and sunk by a Cypriot LNG carrier more than nine time of its size in the East China Sea near Jeju Island, with the loss of three crew members. The sister ships in civilian service are often tasked with military and paramilitary missions and thus frequently come under PLAN and Chinese Coast Guard control.
Type 814A spy ship with NATO reporting name Dadie(大谍, meaning Big Spy) is a type of Chinese spy ship in service with the People's Liberation Army Navy (PLAN). Originally, a total of four ships were planned, but eventually, only one was completed due to the availability of newer designs.
Type 614 research vessel is a type of Chinese research vessel in service with the People's Liberation Army Navy (PLAN). The ship has two derivatives, one is in weather ship configuration, and the other in oceanographic research ship configuration. Type 614 research vessel has been replaced by Type 625.
Type 922 rescue and salvage ship is a series of rescue and salvage ships developed by China for the People's Liberation Army Navy (PLAN), and after decades of service they still remain active in other Chinese governmental establishments.
Type 917 torpedo retriever is a type of Chinese torpedo retriever in service with the People's Liberation Army Navy (PLAN). The program is one of the longest in PLAN, lasting from 1982 to 2007.
Type 907A torpedo trial craft is a Chinese torpedo trial craft currently in service with the People's Liberation Army Navy (PLAN). After nearly three decades of service, the ship still remains active.
Type 906 torpedo trial craft is a Chinese torpedo craft currently in service with the People's Liberation Army Navy (PLAN). After nearly three decades of service, the ship still remains active.
The Type 679 training ship is a Chinese training ship developed for the People's Liberation Army Navy (PLAN). The ship is more commonly known as Zheng He(Chinese: 郑和), after the Ming dynasty admiral of the same name.
Type 646 hydrographic survey ship with NATO reporting name Kanyang class is a type of survey vessel currently in service with the People's Liberation Army Navy (PLAN).
The Type 636 and its successor Type 636A hydrographic survey ships is type of Chinese survey and research vessel designed to replace earlier Type 625 and Type 635 research vessels, and is currently in service with the People's Liberation Army Navy and Chinese Coast Guard.
The Type 648 repair ship is a Chinese submarine repair ship currently in service with the People's Liberation Army Navy (PLAN). It was one of the two units consisting the proposed mobile repair flotilla, but the floating dry dock with lifting capacity of 2000 tons was never built, and Type 648 repair ship was the one only completed. Type 648 has received with NATO reporting name Dadao class.
Type 595 ocean surveillance ship is the first purposely designed and purposely built ocean surveillance ship developed in China for its People's Liberation Army Navy (PLAN). Designed to replace earlier Shuguang class, Type 595 itself has been replaced by Type 639 in PLAN, but despite over four decades of service, this type of ship still remain active in civilian service, albeit on a much smaller scale.
Type 635 hydrographic survey ship is a series of hydrographic survey ships developed by China for its People's Liberation Army Navy (PLAN). More successful than Type 625 of the same era, Type 635 still remains active in PLAN after half a century of service, even after its successor Type 636 has entered service. Type 635 series in PLAN service are designated by a combination of two Chinese characters followed by three-digit number. The second Chinese character is Ce (测), meaning survey in Chinese, because these ships are classified as survey ship. The first Chinese character denotes which fleet the ship is service with, with East for East Sea Fleet, North for North Sea Fleet, and South for South Sea Fleet. However, pennant numbers may have changed due to the change of Chinese naval ships naming convention.
Type 639 is a type of ocean surveillance ship is a type of oceanographic surveillance ship developed by China for its People's Liberation Army Navy (PLAN) to replace earlier Type 595. A single unit of Type 639 with pennant number Bei-diao 992 is currently in service as an oceanographic research ship and five more modified version serving as hydrographic survey ships are designated as Type 639A. Type 639 has received NATO reporting name Kanhai class,勘海 in Chinese, meaning Surveying Sea.
Type 8105 naval trawler is a Chinese auxiliary ship of the People's Liberation Army Navy (PLAN). After retiring from their original role of a spy ship, ships of this type have been converted to auxiliary minesweepers and survey vessels, and kept in operational reserve of the Chinese navy.
