China's Undersea Mapping for Submarine Warfare

China is conducting a vast undersea mapping and monitoring operation across the Pacific, Indian, and Arctic oceans. This effort, involving dozens of research vessels like the Dongfanghong program operated by Renmin University of China, and hundreds of sensors, aims to build detailed knowledge of marine conditions crucial for submarine warfare against the United States and its allies. The data collected, including seabed mapping and ocean sensor deployment, is seen by naval experts as vital for deploying Chinese submarines more effectively and detecting adversaries. The surveying focuses on militarily important waters around the Philippines, United States — Guam, United States — Hawaii, and United States — Wake Island, as well as strategic routes in the Indian Ocean and the Arctic. This initiative is part of China's 'civil-military fusion' strategy under President Xi Jinping, integrating scientific research with military technology. The United States — Office of Naval Research has expressed strategic concern over these expanded surveying efforts, which threaten to erode the United States' asymmetric advantage in ocean battlespace knowledge. The 'transparent ocean' project, proposed by Wu Lixin of Renmin University of China and supported by the China — Shandong government, involves deploying extensive sensor networks in the South China Sea, Pacific, and Indian oceans to gather real-time hydrographic data for maritime defense and security.