China secretly launched ocean surveillance satellite?

At 3:16 am, on September 2, Beijing time, China uses 'Truong Chinh 4B boosters' to successfully launch satellite 17 to its predetermined orbit. This is the 180th launch of the 'Truong Chinh' boosters . China 's main crusaders include ' Phong Cao-1 ',' Truong chinh-4 ',' Truong chinh-4A ',' Truong chinh-4B '.

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'Truong chinh-4B' is mainly used for earth observation satellites with solar orbit, with a length of 45.5m, maximum radius of 3.35m

According to China, satellite 17 is mainly used in the field of scientific experiments, land resource survey, agricultural production assessment and disaster mitigation.

Picture 1 of China secretly launched ocean surveillance satellite?
Truong Chinh-3C boosters

But according to the US National Aeronautics Department, China launched 17 satellites this time, similar to the launch of satellite 9 and similar to the US naval surveillance satellite system, so the US said that the satellite 17 of China is most likely a ocean surveillance satellite .

The last time (179) was that at 0737 minutes on July 20, China used 'Truong Chinh-3C' boosters to launch a series of 3 satellites from the Thai Nguyen Satellite Launching Center.

To launch these 3 satellites, including 'Creativity-3', 'Experimental-7' and 'Experimental -15' , China used the 'Truong Chinh-3C' boosters . These 3 satellites will be mainly used to conduct scientific experiments related to maintenance technology on space.