IRIA News

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The United States, the United Kingdom, and Australia signed a new agreement on May 30, 2026, under their AUKUS security partnership to jointly develop advanced technologies for uncrewed underwater vehicles (UUVs).

This is the first officially announced project under Pillar 2 of the AUKUS framework. The agreement was announced on the sidelines of the Shangri-La Dialogue in Singapore, where defense ministers from the three countries met to review progress on joint defense cooperation.

The project will focus on developing advanced payloads such as sensors and weapons systems that can be deployed across all three nations’ underwater drone fleets. The first deliveries are expected to begin in 2027.

According to a joint statement from U.S. Secretary of War Pete Hegseth, UK Defense Secretary John Healey, and Australian Defense Minister Richard Marles, the new systems will improve the ability of AUKUS partners to protect critical seabed infrastructure. This includes undersea cables and pipelines, which are increasingly seen as vulnerable to disruption.

Australia, the UK, and the US share a special bond that led to a unique defence and security partnership – AUKUS. At its core are shared beliefs that resonate across generations of shared history.

This is AUKUS explained 👇 pic.twitter.com/OWWgWLewKc

— Ministry of Defence 🇬🇧 (@DefenceHQ) May 30, 2026

The technology will also support surveillance, reconnaissance, strike missions, logistics operations, and anti-submarine warfare. It will further enhance mine countermeasures, electronic warfare capabilities, and operations in contested coastal environments.

UK Defence Secretary John Healey said the UK will contribute $201.8 million to the project. He described the initiative as a major step forward in the AUKUS partnership.

“This is a big step forward. It’s a breakthrough that has not been achieved in the AUKUS partnership before now,” he said, adding that the system will improve the ability to detect, deter, and respond to threats against underwater infrastructure such as cables and pipelines.

Technology Development

A UK Ministry of Defense fact sheet said the project will improve interoperability between the three countries through shared standards, common operational concepts, and integrated control systems. Each country will initially focus on different functions of the payload systems.

These will later be made interchangeable, allowing full integration across all three navies before joint development of shared technologies.

The initiative falls under AUKUS Pillar 2, which focuses on advanced military capabilities such as autonomous systems, hypersonic weapons, undersea robotics, and artificial intelligence.

Alongside the underwater drone project, the three countries also confirmed changes to Australia’s plan to acquire Virginia-class submarines under AUKUS Pillar 1.

Australia will streamline its acquisition process by simplifying supply chains, maintenance, and operational requirements to reduce costs and improve efficiency.

Instead of acquiring a mix of new-build and older submarines, Australia will now receive three in-service U.S. Navy Virginia-class submarines.

The earlier plan included a combination of Block IV submarines and a newer Block VII vessel as part of Australia’s long-term transition toward the SSN-AUKUS class submarines expected in the 2040s.

Concerns Over Delays

The AUKUS agreement has faced criticism over slow progress since it was launched in 2021. Responding to this, UK Defense Secretary John Healey said the partnership had previously focused too much on discussion and not enough on delivery.

“For too long in Aukus, we talked too much and delivered too little,” he said. “That has now changed under our three governments.”

AUKUS is widely seen as a response to growing security challenges in the Indo-Pacific, including China’s expanding naval presence and tensions in the South China Sea.

Officials also highlighted rising concerns over damage to undersea infrastructure in different regions, including the Baltic Sea, waters near Taiwan, and the North Atlantic.

The UK has previously accused Russia of covert activity targeting underwater cables and pipelines, allegations that Moscow has denied. The UK and Norway have also increased cooperation to track submarine activity in the North Atlantic.

The United Kingdom is connected by around 60 undersea cables, which officials say are increasingly vulnerable to disruption. Reports have suggested a rise in Russian vessel activity near UK waters in recent years.

While officials did not directly say the UUV project targets any specific country, the focus on undersea infrastructure reflects wider concerns about both Russian and Chinese activity in maritime domains.

Australia’s Submarine Plans and Timeline

Australia’s Defense Minister Richard Marles said there is no alternative plan to AUKUS, describing it as essential for national security. He said the HMAS Stirling base in Western Australia will be ready to host rotational U.S. and UK submarines by the end of 2027.

Construction of a submarine production facility in South Australia is also underway as part of the long-term plan. U.S. Secretary of War Pete Hegseth confirmed that rotational deployments of U.S. and UK submarines in Australia remain on schedule, with personnel expected to arrive later this year.

The new underwater drone program marks the first major deliverable under AUKUS Pillar 2 and signals a shift toward faster joint development of advanced military technologies.

The partners say the initiative will strengthen deterrence, improve maritime security, and expand operational capability across the Indo-Pacific and beyond.