Key takeaways
Defence Secretary John Healey announced the Atlantic Bastion programme during a visit to HM Naval Base Portsmouth on December 9, describing it as a technological transformation of the Royal Navy's submarine-hunting capabilities.
The initiative combines autonomous vessels, artificial intelligence-powered sensors, and traditional warships to create what officials call an advanced hybrid fighting force.
Responding to Russian underwater activity
The programme comes in direct response to heightened Russian submarine and underwater operations, including repeated incursions by the spy ship Yantar near UK waters.
British officials report a 30% increase in Russian vessels posing threats to UK waters over the past two years.
Healey emphasized the urgency of the threat facing undersea infrastructure.
"People should be in no doubt of the new threats facing the UK and our allies under the sea, where adversaries are targeting infrastructure that is so critical to our way of life," he stated.
"This new era of threat demands a new era for defence, and we must rapidly innovate at a wartime pace to maintain the battlefield edge as we deliver on the Strategic Defence Review."
UK Defence Intelligence has assessed that Russia is currently modernizing its fleet specifically to target critical undersea cables and pipelines that carry approximately 99% of international telecommunications data and vital energy supplies.
AI-powered detection network
Atlantic Bastion will integrate ships, submarines, aircraft, and unmanned vessels through AI-powered acoustic detection technology into what the Ministry of Defence describes as a digital targeting web.
This network will enable faster battlefield decisions for tracking and responding to enemy threats across vast ocean areas.
Healey described the programme as "a blueprint for the future of the Royal Navy" that "combines the latest autonomous and AI technologies with world-class warships and aircraft to create a highly advanced hybrid fighting force to detect, deter and defeat those who threaten us."
The initiative has attracted significant industry interest, with £14 million in combined Ministry of Defence and industry investment already committed this year for testing and development.
Twenty-six firms from the UK and Europe have submitted proposals to develop anti-submarine sensor technology, while 20 companies are already showcasing technology demonstrators. Private investment has matched public funding at a 4:1 ratio.
Revolutionary underwater network
First Sea Lord General Sir Gwyn Jenkins outlined the programme's scope during a speech at the International Sea Power Conference in London on the same day. "We are a Navy that thrives when it is allowed to adapt. To evolve. We have never stood still - because the threats never do," Jenkins said.
He emphasized the programme's strategic importance: "The SDR identified the maritime domain as increasingly vulnerable – and that maritime security is a strategic imperative for the UK. It is time to act."
Jenkins described Atlantic Bastion as "our bold new approach to secure the underwater battlespace against a modernising Russia" and announced that "a revolutionary underwater network is taking shape - from the Mid-Atlantic Ridge to the Norwegian Sea. More autonomous, more resilient, more lethal – and British built."
Deployment timeline and technology
The next phase of development will see successful companies advance their work from concept to frontline deployment.
Officials expect capabilities to be deployed in the water next year, with further investment planned to accelerate and expand the programme.
The programme forms part of the UK's Strategic Defence Review and aims to position Britain as a global leader in autonomous naval warfare while building on the country's anti-submarine warfare heritage.
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