AUKUS Pillar II Signature Project
The first AUKUS Pillar II Signature Project, announced 30 May 2026, focuses on developing payloads and enabling systems for uncrewed underwater vehicles with hardware deliveries beginning in 2027.
Last refreshed: 3 July 2026 · Appears in 1 active topic
What does it mean that the AUKUS UUV project names only American robots at launch?
Timeline for AUKUS Pillar II Signature Project
Named as the programme developing weapons for Type 91 and Type 93
Autonomous Systems: Land & Sea: Britain names four uncrewed warship classesMentioned in: Europe bids for the AUKUS seabed
Autonomous Systems: Land & SeaEstablished as the first AUKUS Pillar II Signature Project with 2027 hardware delivery target
Autonomous Systems: Land & Sea: AUKUS names two American sea robotsBackground
The AUKUS Pillar II Signature Project is the first initiative to receive the top-tier "Signature Project" designation under the advanced-capabilities pillar of the AUKUS partnership. US Defense Secretary Pete Hegseth, UK Defence Secretary John Healey, and Australian Deputy Prime Minister Richard Marles signed the project at the Shangri-La Dialogue in Singapore on 30 May 2026. The designation signals the three governments' intent to resource and prioritise the programme above ordinary bilateral procurement.
The project is a trilateral programme to develop payloads and enabling systems for uncrewed underwater vehicles (UUVs), with hardware deliveries beginning in 2027. Its stated mission scope covers four roles: mine countermeasures (MCM), anti-submarine warfare (ASW), seabed-infrastructure protection, and contested-littoral manoeuvre. The fact sheet named two platforms: the Mission Specialist Defender Mk IV ROV and the L3Harris Iver4 900 AUV, both US-built. No UK-built platform was included, a notable absence given BAE Systems' Herne XLAUV is on track for Lloyd's Register certification and 2026 delivery.
No programme budget was disclosed. The announcement came one week after RNMB Ariadne sailed toward the Strait of Hormuz on a crewless minehunting deployment, demonstrating the operational context the project is designed to accelerate.
The Defence Investment Plan, published on 30 June 2026, named Type 91 (uncrewed missile) and Type 93 (extra-large uncrewed underwater vehicle) as weapons being developed under this Signature Project, the first concrete UK platforms tied to the programme since the May announcement listed none.
What was announced at the AUKUS Pillar II Signature Project signing in May 2026?
What missions will the AUKUS UUV Signature Project cover?
Why is the AUKUS Pillar II Signature Project significant for underwater warfare?
When will the AUKUS UUV project deliver hardware?
Which UK ship classes are linked to the AUKUS Pillar II Signature Project?
