Yuanwang-6 has completed six maritime TTC missions this year.
On June 17, China successfully launched Shenzhou-12, with three astronauts on board for space station construction.
Chinas Yuanwang-6 space-tracking ship returned to its homeport on Monday after completing its telemetry, tracking and command (TTC) tasks for the Tianzhou-2 cargo spacecraft and Shenzhou-12 manned spaceship missions.
Yuanwang-6, Chinas third-generation space-tracking ship, was at sea for 29 days, sailing more than 5,000 nautical miles for the two missions.
On May 29, China launched Tianzhou-2. The cargo freighter, carrying supplies, equipment and propellant, successfully docked with the space station core module Tianhe on May 30.
When the Shenzhou-12 spaceship, atop a Long March-2F carrier rocket, reached the TTC range of Yuangwang-6 sailing in the Pacific Ocean at the time, the space-tracking ship discovered and captured the signals of the spaceship promptly.
The tracking vessel helped Shenzhou-12 undertake several key moves, including orbit entry and unfolding of solar panels, providing significant data support for the missions.
Yuanwang-6 has provided vital communication between the spacecraft and the ground.
As the only maritime TTC point in the Shenzhou missions, Yuanwang-6 sent several key instructions to the spacecraft and sent back astronauts images and voice information, according to Yang Bianjiao, captain of Yuanwang-6.