Core Viewpoint - The successful return of China's first ice-capable manned deep-sea research mother ship "Exploration No. 3" and the manned submersible "Fighter" after completing a deep-sea mission in the Arctic highlights China's advancements in deep-sea exploration technology and its capability to conduct scientific research in extreme environments [1][4]. Group 1 - The Arctic manned deep-sea research team departed from Sanya on July 22 and conducted operations in the Arctic Ocean for 56 days, collecting valuable water, sediment, rock, and biological samples, which will support research on rapid climate changes in the Arctic [4][10]. - The "Fighter" submersible completed 43 dives in the Arctic, collaborating with the "Dragon" submersible for underwater joint operations, marking a new model for dual manned submersible operations in China [5][8]. - The mission included the first manned deep-sea scientific exploration of the Gakkel Ridge in the Arctic, with the "Fighter" spending an average of over 9 hours underwater per dive and over 6 hours on the seabed [6][10]. Group 2 - The mission faced unique challenges in the Arctic, such as navigating through drifting icebergs and adapting to rapid temperature changes during the polar day and night cycles, which significantly affected the sensitivity of the equipment [10]. - The successful completion of this mission positions China as the only country capable of conducting continuous manned deep-sea dives in densely ice-covered areas of the Arctic [8].

Core Insights - The "Fendouzhe" manned submersible successfully completed its Arctic deep-sea mission, returning after 98 days and covering over 15,000 nautical miles [1] - A total of 43 dive operations were conducted, including the first manned deep-sea scientific exploration of the Gakkel Ridge in the Arctic [3] - China is now the only country capable of conducting continuous manned deep-sea dives in densely ice-covered areas of the Arctic [3] Summary by Sections - **Mission Accomplishments** - "Fendouzhe" completed 43 dive operations during its Arctic mission [3] - The submersible spent an average of over 9 hours underwater per dive, with over 6 hours of operational time on the seabed [3] - The mission involved collaboration with the "Jiaolong" submersible for positioning and marker exchange, innovating China's dual manned submersible operational model [3] - **Challenges Faced** - The primary challenge in the Arctic was navigating "moving icebergs," which posed risks during ascents and descents [4] - The submersible had to avoid drifting ice, requiring high sensitivity and real-time adjustments due to rapid changes in light and temperature conditions [6] - **Scientific Contributions** - The mission returned with water, sediment, rock, and biological samples from the Arctic, along with extensive observational data [8] - These findings will support further research on Arctic climate change [8]

Core Insights - The "Fendouzhe" manned submersible successfully completed 43 dive missions in the Arctic, collaborating with the "Jiaolong" submersible, marking a significant advancement in underwater cooperative operations for China [3][4]. Group 1: Mission Overview - The mission was organized by the Ministry of Natural Resources and the Chinese Academy of Sciences, utilizing the "Exploration No. 3" vessel and the "Fendouzhe" submersible for manned deep-sea exploration in the Arctic [3]. - The expedition lasted 56 days, during which the team conducted a series of scientific investigations and experiments in the Arctic Ocean [3]. - The maximum dive depth achieved was 5,277 meters, representing the first manned deep-sea exploration of the Gakkel Ridge in the Arctic [3]. Group 2: Scientific Contributions - The "Fendouzhe" submersible collected valuable samples of Arctic water, sediments, rocks, and biological specimens, providing significant observational data for research on rapid climate change in the Arctic and the evolution and adaptation mechanisms of life in extreme environments [3][4]. - The mission validated the operational capabilities and application value of the "Fendouzhe" submersible and the "Exploration No. 3" vessel in polar ice regions, achieving breakthroughs in domestic technology for deep-sea exploration [4]. Group 3: Technological Innovations - The expedition pioneered a new mobile ice-diving model of "ship-submersible cooperation" in dense ice areas, positioning China as the only country currently conducting continuous manned deep-sea dives in the Arctic's dense sea ice [4]. - The "Fendouzhe" submersible and the "Jiaolong" submersible completed over ten dive missions in the Arctic, engaging in underwater cooperative tasks such as positioning searches and underwater motion photography [4].

Core Viewpoint - The Chinese scientific research team successfully completed a manned deep-sea diving mission in the Arctic, utilizing the domestically designed and built ice-capable mother ship "Exploration No. 3" and the manned submersible "Fighter" [1][2]. Group 1 - The mission lasted 56 days, starting from July 22, with the "Fighter" completing 43 dives in the Arctic [1]. - The "Dragon" manned submersible achieved China's first manned deep-sea dive in the Arctic ice zone, collaborating underwater with the "Fighter" to innovate a dual submersible operation model [1][2]. - The "Fighter" reached a maximum diving depth of 5,277 meters during the mission, conducting the first manned deep-sea scientific research in the Arctic's Gakkel Ridge [1][2]. Group 2 - The mission validated the operational capabilities and application value of the "Fighter" and "Exploration No. 3" in polar ice regions, achieving significant technological breakthroughs in extreme environment operations [2]. - The research team established operational protocols for the "Fighter" in extreme polar conditions, creating a new mobile ice-diving model for ship-submersible collaboration [2]. - The mission allowed for the collection of valuable water, sediment, rock, and biological samples, providing crucial observational data for studying rapid climate change in the Arctic and the evolution and adaptation mechanisms of polar life [2].

Core Insights - The deep-sea exploration mission in the Arctic, conducted by the research team using the "Fendouzhe" manned submersible and the "Tansuo Sanhao" mother ship, successfully returned to Sanya, Hainan after completing significant scientific tasks [1][2] Group 1: Mission Achievements - The "Fendouzhe" submersible completed 43 dives in the Arctic, marking a significant achievement in underwater collaborative operations with the "Jiaolong" submersible, which previously conducted China's first Arctic ice zone dive [1] - The mission lasted 56 days in the Arctic Ocean, where the team conducted a series of scientific investigations and experiments, including the first manned deep-sea exploration of the Gakkel Ridge in the Arctic, reaching a maximum depth of 5,277 meters [1] Group 2: Technological Advancements - The mission validated the operational capabilities and application value of the "Fendouzhe" submersible and the "Tansuo Sanhao" mother ship in polar ice regions, achieving breakthroughs in domestic technology for deep-sea exploration [2] - A new mobile ice-diving model was established, enabling "ship-submersible collaboration" in dense ice areas, positioning China as the only country currently conducting continuous manned deep-sea dives in the Arctic's dense sea ice [2] Group 3: Scientific Contributions - The "Fendouzhe" submersible collected valuable samples of Arctic water, sediments, rocks, and biological specimens, providing extensive observational data that will support further research on rapid climate change in the Arctic and the evolution and adaptation mechanisms of life in polar regions [1]

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]