Jiaolong (simplified Chinese: 蛟龙号; traditional Chinese: 蛟龍號; pinyin: jiāolóng hào flood dragon) is a Chinese manned deep-sea research submersible that can dive to a depth of over 7,000 m. It has the greatest depth range of any manned research vehicle in the world, the only manned expeditions to have gone deeper were the dives of the Trieste bathyscaphe (10,916m) in 1960 and the dive of the Deepsea Challenger (10,898m) in 2012, both diving to Challenger Deep. The general designer is Xu Qinan (徐芑南), a former professor of School of Naval Architecture, Ocean and Civil Engineering(船舶与海洋工程学院) of Shanghai Jiao Tong University (SJTU), who also designed many other Chinese submersibles and unmanned underwater vehicles. Xu is now an academician for the Chinese Academy of Engineering. The first deputy