China's most advanced submersibles are undergoing a revamp at the National Deep Sea Center.The 1.5-ton Qianlong III is an orange fish-shaped autonomous underwater vehicle, designed to conduct surveys of the ocean floor's terrain and landform and take pictures underwater. The Hailong III is a super-deep-water, heavy-duty remotely operated vehicle (ROV).The deep-sea manned submersible Jiaolong set a record by diving to a depth of 7,062 meters during tests in the Mariana Trench in June 2012.
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2018-06-02 22:54 GMT+8