Before the voyage, it underwent more than 50 days of maintenance to improve the reliability and safety of the ship's power system and facilities, said Zhang Hongwang, a first mate of the vessel.
The ship spent 256 days at sea last year.
Yuanwang-5 has by far sailed over 570,000 nautical miles and completed more than 80 tasks at sea, including tracking the Shenzhou spacecraft, the Chang'e lunar probes and BeiDou satellites.
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