The Jiaolong manned submersible is a manned submersible independently designed and independently developed by China. It is also a major research project in the 863 plan. From May to July 2010, the Jiaolong manned submersible conducted multiple dive missions in the South China Sea, reaching a maximum diving depth of 7,020 meters.

"Jiaolong" has a length, width and height of 8.2 meters, 3.0 meters and 3.4 meters respectively. Its empty weight does not exceed 22 tons. The maximum load is 240 kilograms. The maximum speed is 25 nautical miles per hour. It cruises 1 nautical mile per hour, the current maximum diving depth is 7062.68 meters, and the maximum working design depth is 8000 meters. In theory, its working range can cover 99.8% of the global ocean area.

Achievements in my country’s deep-sea resource survey, exploration and development work: the application for extension of the polymetallic nodule exploration contract has been approved by the International Seabed Authority Council, and the State Oceanic Administration has organized five ocean voyage missions, focusing on ensuring " The investigation work continues to expand, including the experimental application work of the Jiaolong manned submersible and the field investigation work in the exploration contract area.

Deep-sea equipment technology is gradually being applied, and deep-sea survey capabilities are further enhanced. The "Jiaolong" manned submersible, the "Qianlong" series of unmanned cable-controlled submersibles and the "Hailong" series of unmanned cable-controlled diving Deep-sea high-tech equipment such as deep-sea equipment provides a strong guarantee for my country to carry out resource surveys and fulfill its exploration contract obligations.

Extended information:

As one of the "Three Dragons" of the submersible family, the Jiaolong is different from the unmanned and cableless Qianlong and the unmanned and cabled Hailong. The advantage of the number lies in fixed-point hovering operations. By taking the Jiaolong, scientists can directly observe and sample the seafloor, and conduct detailed "anatomy sparrow" research on a certain point on the seafloor. The "Three Dragons" can realize complementary advantages and combine points, lines and surfaces for survey.

In June 2002, the Ministry of Science and Technology officially approved the establishment of the "7000-meter manned submersible" major project of the National "Tenth Five-Year Plan" 863 Plan. As the owner, the China Oceanographic Association is specifically responsible for the organization and implementation of the project; domestic deep-sea equipment research and development units such as the 702 Research Institute of China Shipbuilding Industry Corporation and the Shenyang Institute of Automation of the Chinese Academy of Sciences have become the backbone of the project.

After the smooth delivery of Jiaolong, from 2009 to 2012, Jiaolong successively achieved successful sea trials of 1000-meter class, 3000-meter class, 5000-meter class and 7000-meter class. Diving to 7,000 meters demonstrates the maturity of the Jiaolong manned submersible's integration technology and marks that my country's deep-sea submersibles have become one of the forefront and commanding heights of marine scientific investigation.

China News Network - China's deep sea resources survey and exploration and development have achieved fruitful results

Baidu Encyclopedia - Jiaolong Hao