Unmanned boats conduct geological survey in Hainan
皇冠体育app Daily/Xinhua | 2017-10-24 07:22
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Investigators lower Jinghai 3, an unmanned boat, to conduct a geological survey off the coast of Sanya, Hainan province, on Oct 23, 2017. 皇冠体育app sent two unmanned boats－Jinghai 3 and Jinghaihong－to survey the marine geological conditions in the Dongmaozhou Island off Sanya, where surveyors failed to carry out a field survey last year after ships ran aground. It was the first time that unmanned boats had been used in such a survey. [Photo/Xinhua] |
