'far-seeing' Yuǎn wàng) are a line of Chinese tracking ships used for surveillance and communication of launch vehicle rockets and intercontinental ballistic missiles by the People's Liberation Army Strategic Support Force.

The ships are all assigned to the China Maritime Satellite Telemetry and Control Department in Jianyin, Jiangsu province.

[citation needed] The class was first proposed by Premier Zhou Enlai in 1965, and was approved by Mao Zedong in 1968.

Yuan Wang 4 was converted from Type 643 research vessel Xiangyanghong 10 (向阳红10), which was originally designed in February 1971, with construction begun in July 1975, and entered service in October 1979.

While in Jiangyin port at 5:10 AM on 5 August 2007, Yuan Wang 4 was hit by a coal carrier Harbor Sea 666 (Gang Hai 666, 港海 666), which caused a massive fire started at the point of collision at 4th fuel tank.

[9][10] Built by Jiangnan Shipyard, Yuan Wang 5 has a displacement of 25,000 tones, and is designed to withstand winds up to Beaufort scale 12, and perform duties in sea state 6.

Yuan Wang 6 utilizes fiber optic for its information system on board, and the electricity generated by the ship is enough to supply a city of 300,000.

[15] Specification: Yuan Wang 7 was constructed by Jiangnan Shipbuilding, and is said to be able to operate for 100 days at sea.

[16] The Yuan Wang 21 is a cargo ship designed by the 708th Research Institute specially to transport rockets such as the Long March 5; construction began on 1 April 2012, and it was launched on 29 November 2012.