The Jiaolong is China's first manned deep-sea research submersible and is also a major research project in the National 863 Program. The submersible has conducted multiple dive missions in the South China Sea, to a maximum depth of 7,020 meters. The Jiaolong can be widely used in 99.8 percent of the world's ocean area, which is of great significance to the development and utilization of deep-sea resources in China.