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. Type 636 & 636A has received NATO reporting name Shupang class.

Type 636 Type 636 hydrographic survey ship and its successor Type 636A are both designed by of the 708th Institute of China State Shipbuilding Corporation (CSSC), 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. Special attention was given to vibration reduction measures and the internal noise generated by the ship itself was much lower than other ships of similar size. The ship was built by Wuhu Shipyard and entered service in August 1998. On November 16, 2011, it was transferred to Chinese Coast Guard. Specification:Type 636 Length (m): 129.82 Beam (m): 17 Depth (m): 8.1 Cruise speed (kn): 15 Top speed (kn): 18 Endurance (day): 60 Range (nmi): 15000 Displacement (t): 5872 Max wind scale resistance: 12

Type 636A Type 636A is the successor of earlier Type 636. Construction of the first ship of Type 636A began at Wuhu Shipyard in May 2003 and there are more than two dozen surveying systems installed on board. Each ship has two names, one used with the pennant number when on naval service, and another when working in civilian roles. The former are the names of eminent scientists and the second in a Hai Yang (海洋, "ocean") numbered series.

Length (m): 129.28 Beam (m): 17 Depth (m): 8.1 Cruise speed (kn): 15 Top speed (kn): 17.5 Endurance (day): 60 Range (nmi): 15000 @ 15 kn Displacement (t): 5883 Crew: 134

Ships Type 636 and 636A ships are named as contemporary Chinese scientists.

Type Pennant number Name Builder Laid down Commissioned Civilian Name Status 636 871 Li Siguang Wuhu Shipyard ― October 1998 Hai Yang 18 Decommissioned (CCG: Haijing 2506) 636A 872 Zhu Kezhen Wuhu Shipyard — May 2003 Hai Yang 20 Active 636A 875 Qian Sanqiang Wuhu Shipyard ― 1 May 2008 Hai Yang 22 Active 636A 873 Qian Xuesen Wuhu Shipyard ― 26 December 2015 Hai Yang 23 Active 636A 874 Deng Jiaxian ― ― 2 February 2016 Hai Yang 24 Active 636A 876 Qian Weichang ― ― 25 July 2016 Hai Yang 25 Active 636A 877 Chen Jingrun ― ― After 2016 Hai Yang 26 Active 636A 878 Wang Ganchang ― ― After 2016 Hai Yang 27 Active 636A 879 Zhu Guangya ― ― After 2016 Hai Yang 28 Active 636A 880 Mao Yisheng ― ― After 2016 Hai Yang 29 Active

References