Core Insights - The successful return of the Arctic manned deep-sea exploration team marks a significant achievement in China's deep-sea research capabilities, utilizing the domestically designed and built ice-breaking mother ship "Exploration No. 3" and the manned submersible "Fighter" [1][2] Group 1: Mission Overview - The Arctic manned deep-sea exploration team completed 43 dive missions with the "Fighter" submersible, collaborating underwater with the "Jiaolong" submersible, innovating a dual submersible operational model [1] - The mission lasted 98 days, covering over 15,000 nautical miles, with 56 days of operations in the Arctic Ocean and 1,989 nautical miles of navigation in ice-covered areas [1] Group 2: Technical Achievements - The "Fighter" submersible achieved an average underwater time of over 9 hours and an average seabed operation time of over 6 hours during 32 dives in 29 days, reaching a maximum depth of 5,277 meters [2] - The mission validated the operational capabilities and application value of the "Fighter" submersible and "Exploration No. 3" in polar ice regions, establishing a new mobile ice diving model [2] Group 3: Scientific Contributions - The exploration team collected valuable water, sediment, rock, and biological samples, providing significant observational data to support research on rapid climate change in the Arctic and geological processes in the context of ultra-slow expansion of the Gakkel Ridge [3]

Core Insights - The successful return of the Arctic manned deep-sea exploration team marks a significant achievement in China's deep-sea research capabilities, utilizing the domestically designed ice-breaking mother ship "Exploration No. 3" and the manned submersible "Fendouzhe" [1][2] Group 1: Mission Overview - The Arctic manned deep-sea exploration team embarked on a mission on July 22, covering over 15,000 nautical miles and conducting operations in the Arctic Ocean for 56 days [2] - The mission was part of China's 14th Five-Year Plan for key research and development in deep-sea and polar technologies, involving collaboration with the "Jiaolong" manned submersible team [2] Group 2: Operational Achievements - The "Fendouzhe" completed 43 dives, while the "Jiaolong" achieved China's first submersion in the Arctic ice zone, demonstrating successful underwater collaborative operations [2][4] - In the central basin with over 80% ice coverage, the team conducted the first international manned deep-sea exploration of the Gakkel Ridge, with the "Fendouzhe" achieving a maximum depth of 5,277 meters [4][5] Group 3: Technological Advancements - The mission validated the operational capabilities of the "Fendouzhe" and "Exploration No. 3" in polar ice regions, establishing a new model for ship-submersible collaboration in extreme environments [5] - The team developed operational protocols for manned deep-sea exploration in extreme conditions, enhancing the underwater operational time of submersibles in drifting ice environments [5] Group 4: Scientific Contributions - A variety of valuable samples, including water, sediment, rock, and biological specimens, were collected, providing critical data for studying rapid climate change in the Arctic and geological processes in the Gakkel Ridge [7] - The mission was supported by multiple governmental and scientific organizations, involving over 80 team members from 16 research institutions, universities, and enterprises [7]