Beidiao 993 is an experimental ship chartered by the Chinese People's Liberation Army Navy (PLAN), and operated by the 760th Research Institute of China Shipbuilding Industry Corporation (CSIC). Beidiao 993 is specifically designed to carry out experiments of acoustic equipment, such as sonar, and its crew is often composed both naval and civilian staff. Constructed by the Tongfang Jiangxin Shipbuilding Company (同方江新造船有限公司) in Jiangxi, trials begun in December 2000 in Dalian and the ship entered service in the same month. The name Beidiao means North Investigation (Ship).
Chinese wave piercing ship Beidiao 990 is the largest Chinese developed ship with wave-piercing hull. Designed by the 701st Institute of China Shipbuilding Industry Corporation (CSIC), the ship was built by Wuchang Shipbuilding Industry Company Ltd. (武昌船舶重工有限责任公司), and was launched on June 1, 2009. Beidiao 990 has a deep-V shaped hull, and the entire ship is constructed of aluminum, the first of its kind in China. The high grade aluminum needed for the construction of the ship is supplied by Beijing Alumip Development Co., Ltd. (北京艾路浦科技发展有限公司). The name Beidiao (北调) 990 means North Investigation (Ship) 990, and the ship is unique in that it also has a second name Dongyuan (东远) 01, meaning East Distant. Although capable being deployed as a platform for various missions such as surveillance, survey, and research, the ship is currently used as a troopship by the People's Liberation Army Navy to rotate sailors and marines.
Type 639 is a type of ocean surveillance ship is the newest oceanographic surveillance ship developed by China for its People's Liberation Army Navy (PLAN). A single unit of Type 639 with pennant number Bei-diao 991 is currently in service as an oceanographic research ship and five more modified version serving as hydrographic survey ships are designated as Type 639A
300-ton class environmental research ship is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The exact type of this class remain unknown as of 2015, because no official information has been released, despite the ships have already been in service around a decade. 300-ton class is the most commonly referred term when describe these ships. In addition to the usual task of conducting regular environmental sampling, surveillance and research missions, these ships are also tasked with additional task of sewer transfer and treatment from other ships to prevent sewer onboard other ships from overflowing into the sea and thus causing pollution, and thus these ships also act as sewer vessels for vessel sewage discharging.
Dongdao class reefer ship is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN), and at least three units were completed and entered service with PLAN from 1960 thru 1962. This class can carry between seven hundred to eight hundred tons of frozen cargo.
Dongleng class reefer ship is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN), and at least thirteen units were completed and entered service with PLAN from 1960 thru 1962. This class can carry between seven hundred to eight hundred tons of frozen cargo.
Beiqi 346 class crane ship is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and a total of four units of this class have been confirmed in active service as of mid-2010s.
Beiqi 384 class crane ship is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and only a single unit of this class have been confirmed in active service as of mid-2010s.
Beijun 204 class dredger is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and only a single unit of this class have been confirmed in active service as of mid-2010s. In comparison to other dredger in Chinese military service, Beijun 204 class is also capable of performing floating pile driver missions with two piles it is equipped with, one on each side of the ship.
Dongjun 417 class dredger is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and only a single unit of this class have been confirmed in active service as of mid-2010s. Dongjun 417 class is a bucket dredger.
Nanjun 610 class dredger is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and a total of two of this class have been confirmed in active service as of mid-2010s.
Donggong 429 class floating pile driver is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and only a single unit of this class have been confirmed in active service as of mid-2010s.
The Beijiao 39 class dispatch boat is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN).
Beijiao 57 class dispatch boat is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and a total of eleven units of this class have been confirmed in active service as of mid-2010s, making this class the most numerous dispatch boats in service with the Chinese navy.
Nanshui 701 class water tanker is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and only a single unit of this class have been confirmed in active service as of mid-2010s.
The Beiyou 572 class oil tanker is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and a total of four of this class have been confirmed in active service as of mid-2010s.
Dongyou 630 class oil tanker is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and a total of two of this class have been confirmed in active service as of mid-2010s.
Dongyou 640 class oil tanker is a class of naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and a total of four of this class have been confirmed in active service as of mid-2010s.
Beituo 702 class tug is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, and only a single unit of this class have been confirmed in active service as of mid-2010s.
The Nantuo 181 class tug is a class of little known naval auxiliary ship currently in service with the People's Liberation Army Navy (PLAN). The name of this class is after the first unit commissioned, with the exact type still remains unknown, because the only official information released by the Chinese government is that this class is a new generation of 9000-hp class sea-going rescue tug, and that a total of three of this class have been confirmed in active service as of the mid-2010s.
