China's first ocean drilling vessel, the "Dream", has made its debut, while also revealing a major scientific dream it carries: drilling through the crust and entering the mantle. The first ocean drilling vessel independently designed and built by China, "Dream", was officially named on the 18th and underwent its first trial voyage in Nansha, Guangzhou. "The 'Dream' ocean drilling vessel is a major technological innovation project deployed by the Central Committee of the Communist Party of China, with overall equipment and comprehensive operational capabilities at an international leading level. Li Jinfa, a member of the Party Group of the Ministry of Natural Resources and Director of the China Geological Survey, said that the 'Dream' carries the dream of the Chinese people to build a maritime power, the dream of global scientists to 'penetrate the Moho surface and enter the upper mantle'." Carrying the dream of human development of deep Earth resources. The "Dream" ship, built by the China Geological Survey of the Ministry of Natural Resources and more than 150 units in close collaboration and innovation, and undertaken by China Shipbuilding Group, has a total weight of about 33000 tons, a total length of 179.8 meters, a width of 32.8 meters, a range of 15000 nautical miles, and a self-sustaining capacity of 120 days. Its stability and structural strength are designed according to the safety requirements of a 16 level typhoon sea condition, and it has the ability to operate in unlimited navigation areas around the world and a drilling capacity of 11000 meters in the sea area. The reporter learned from on-site interviews that ocean drilling is known as the "crown" of ocean technology, and the "Moho surface" that penetrates the interface between the crust and mantle reflects the gold content of the "crown". The mantle accounts for 4/5 of the Earth's volume and 3/4 of its mass, making it the largest "chemical reservoir" on Earth, full of unsolved mysteries. Drilling through the crust, penetrating the Moho surface, and entering the upper mantle are human scientific dreams. It is reported that the Moho surface is about 30-40 kilometers below the mainland and 6-7 kilometers below the ocean, so ocean drilling is expected to open the door of treasure for earth science research. The Dream has a drilling capability of 11000 meters in the sea, equivalent to the depth of the Mariana Trench. Due to this internationally leading ocean drilling capability, the completion of the "Dream" will provide important equipment support for the exploration and exploitation of ocean energy resources, becoming a "national weapon" to ensure national energy security and a "core weapon" to support the construction of a maritime power. (Lai Xin She)
Edit：He Chuanning Responsible editor：Su Suiyue
Source：Xinhua
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