China Achieves Parity with the United States in Underwater and Ocean Monitoring Capabilities

Summary

China has assembled a fleet of 64 modern oceanographic research vessels that collectively surpasses the combined size of all equivalent U.S. research and survey fleets, with most ships built within the last 15 years and equipped with advanced capabilities including polar operations and unmanned vehicle deployment. A flagship vessel, the Zhu Hai Yun, serves as a mothership for over 50 unmanned systems — including aerial drones, surface vehicles, and underwater gliders — capable of simultaneously monitoring a vast area spanning 160 kilometers wide, 4 kilometers above, and 1.5 kilometers below the ocean surface. China has also developed five Extra-Large Unmanned Underwater Vehicles (XLUUVs) ranging from 15 to 20 meters in length, capable of seafloor mapping, carrying weapons such as torpedoes or mines, and potentially deploying towed-array sonar systems across Pacific distances. Additionally, China's long-endurance underwater gliders, the Haiyan and Haiyi, can operate for months, traveling thousands of miles while collecting and transmitting critical oceanographic data via satellite. China has even acquired examples of U.S. equivalent glider technology from units that accidentally washed ashore in the Pacific, providing additional intelligence on American surveillance methods.