China Develops Unprecedented Drone Mothership, Satellite Images Reveal

Satellite images reveal China is constructing what is believed to be the world's first mothership capable of launching and recovering large underwater drones. The vessel, identified at the Hudong-Zhonghua shipyard in Shanghai, is reportedly designed to carry and deploy at least four autonomous submarines.

This development marks a significant step in underwater warfare capabilities, as China appears to be pioneering the concept of a dedicated drone submarine mothership. The existence of such a vessel was first noted by the defense intelligence company Vantor.

China is the only nation known to have designed uncrewed submarines of this scale. These submarines, first revealed in January 2025, are categorized as extra-extra-large uncrewed undersea vehicles (XXLUUVs). They measure between 35 and 45 meters (115-148 feet) in length, dwarfing the U.S. Navy's Boeing Orca XLUUV, which is approximately 16 meters (51 feet) long. For comparison, the UK's XV Excalibur, under Project Cetus, measures 12 meters (39 feet).

The new Chinese mothership is believed to be capable of supporting these large XXLUUVs for extended operations, potentially enabling missions thousands of miles from shore. The submarines are likely stored within an internal hangar, a feature that experts suggest makes civilian or research explanations for the vessel unconvincing. While specific details about the XXLUUVs are limited, similar U.S. uncrewed submarines can carry heavy payloads, including torpedoes. The significantly larger Chinese XXLUUVs are expected to possess an even greater payload capacity and a range potentially exceeding 10,000 nautical miles.

China's substantial investment in shipbuilding capacity, estimated to be significantly larger than that of the United States, supports its strategic focus on maritime dominance. This includes ambitions related to Taiwan and its assertive stance in the South China Sea, where territorial disputes with neighboring countries continue to cause friction.

During a recent security conference, China's defense minister, Dong Jun, emphasized vigilance against "hegemony, militarism and historical revisionism," a statement interpreted by many analysts as a veiled reference to Japan's increasing defense capabilities. The ongoing development of advanced naval assets, such as this drone mothership, underscores China's commitment to expanding its military reach and technological capabilities at sea.