The United States, the United Kingdom, and Australia are jointly developing advanced unmanned undersea vehicles (UUVs) under their AUKUS security alliance [1, 2].
This initiative marks the first signature project under AUKUS Pillar Two, representing a shift toward integrating high-tech autonomous systems into collective maritime defense. The project is designed to strengthen the alliance's capabilities and counter the expanding maritime activities of China [1, 2].
U.S. Secretary of Defense Pete Hegseth announced the project during the Shangri-La Dialogue in Singapore [2]. He said the three nations are working together to develop these vehicles as part of the trilateral defense pact [2].
The project focuses on accelerating the deployment of underwater drone technology to maintain a strategic edge in the Indo-Pacific. Hegseth said nations are "accelerating delivery" with the UUV project [2].
According to the alliance, the delivery of these unmanned undersea vehicles is set for 2027 [1]. The development of these drones is intended to provide the three nations with enhanced surveillance and operational capabilities beneath the ocean surface, a critical domain for modern naval warfare.
By focusing on Pillar Two, the AUKUS partners are expanding their cooperation beyond the delivery of nuclear-powered submarines. This new focus on unmanned systems allows the alliance to deploy scalable and lower-risk assets in contested waters [1, 2].
“The United States, Britain and Australia are working together to develop unmanned undersea vehicles”
The transition to Pillar Two projects signals that AUKUS is moving beyond heavy hardware like submarines toward a broader ecosystem of autonomous warfare. By prioritizing UUVs, the alliance aims to create a persistent, unmanned presence in the Indo-Pacific that can monitor Chinese naval movements without risking human crews, effectively altering the risk-reward calculus of maritime deterrence.
