The trilateral AUKUS security partnership has announced a new signature project focused on developing advanced payloads and enabling systems for uncrewed undersea vehicles (UUVs). This initiative, part of AUKUS Pillar II, is designed to strengthen the partner nations' maritime defence and is scheduled to begin deliveries in 2027.
The project aims to significantly improve the partners’ ability to protect critical seabed infrastructure and expand their capabilities in surveillance, reconnaissance, strike operations, and logistics within undersea environments. It will enhance performance across multiple warfare domains, including anti-submarine and anti-surface warfare, mine countermeasures, electronic warfare, and contested littoral manoeuvres.
Alongside this development, the joint statement from defence leaders of Australia, the United Kingdom, and the United States reaffirmed progress on other core AUKUS undertakings. These include the ongoing support for Australia’s acquisition of conventionally armed, nuclear-powered submarines under Pillar I, with key milestones met for the Submarine Rotational Force-West (SRF-West), set to be established in 2027.
The partners also endorsed the streamlined acquisition approach for Virginia-class submarines and noted substantial advancements in the design and delivery of the SSN-AUKUS, a next-generation nuclear submariner platform intended to furnish both the UK and Australia with enhanced warfighting capabilities.
The three nations committed to expanding the AUKUS licence-free technology environment by narrowing the list of excluded technologies, aiming to promote more efficient collaboration and integration of advanced systems. This effort underlines the partnership’s intent to accelerate the delivery of cutting-edge capabilities to their maritime forces, reinforcing deterrence and maintaining superiority in the undersea domain.
This development highlights the strategic importance of the undersea environment, which supports global trade routes, national defence interests, and broader international security objectives for AUKUS members.

