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The Albanese government has announced a $310 million investment to procure critical long-lead components from the United Kingdom, marking a significant step forward in delivering Australia’s nuclear-powered submarines under the AUKUS program.
The funding will support the manufacture of essential elements of the nuclear propulsion systems that will power Australia’s first two SSN-AUKUS submarines, which are scheduled to be built domestically at the Osborne Naval Shipyard.
Under the trilateral agreement, complete welded propulsion units will be delivered by Rolls‑Royce Submarines, with reactor production already underway at the company’s facility in Derby. The early acquisition of long-lead items is designed to ensure production schedules remain on track, preserve specialised industrial skills, and synchronise manufacturing timelines across the AUKUS partners.
The $310 million investment complements Australia’s previously announced contribution of £2.4 billion over a decade to expand the UK’s nuclear submarine industrial capacity, reinforcing the deepening industrial integration underpinning the SSN-AUKUS program.
The propulsion investment comes alongside broader infrastructure development at Osborne, where the Australian government has committed $3.9 billion to establish a new submarine construction yard.
At peak activity, the construction yard is expected to employ at least 4,000 workers to design and build the necessary infrastructure, with approximately 5,500 direct jobs forecast to support submarine construction once the program reaches full production.
The long-lead procurement represents a critical milestone in ensuring Australia can begin building nuclear-powered submarines domestically before the end of the decade, delivering a sovereign industrial capability that will underpin the Royal Australian Navy’s future undersea warfare posture.
Deputy Prime Minister and Defence Minister Richard Marles said early investment in propulsion systems was essential to maintaining the program’s momentum and ensuring Australia develops the industrial capability required to operate nuclear-powered submarines independently.
“Early investment in components such as the nuclear propulsion systems will be critical to the delivery of AUKUS,” he said.
Rolls-Royce Submarines remains a cornerstone of the submarine enterprise, providing propulsion systems for both UK and Australian SSN-AUKUS boats. The early procurement of propulsion components strengthens supply chain resilience while reducing schedule risk for one of Australia’s most complex and strategically significant defence programs.
Minister for Defence Industry Pat Conroy said the investment demonstrated Australia’s commitment to building a sovereign submarine capability while delivering significant industrial and workforce benefits.
“Starting work early on critical submarine components is essential to keeping this program on track. Australia’s investment is helping to lay the foundations for a sovereign capability that will keep Australians safe for decades to come,” Minister Conroy said.
The announcement coincides with the presence of a UK nuclear-powered submarine at HMAS Stirling, where an Astute Class boat is undergoing a maintenance period, the first time a British nuclear submarine has received such support in Australia.
The milestone reflects growing operational integration between Australia and its AUKUS partners and forms part of preparations for Australia’s future nuclear-powered submarine fleet.
The propulsion system procurement follows recent high-level engagements between Australian and UK defence industry leaders, underscoring the accelerating pace of industrial cooperation across the AUKUS partnership.
Beyond propulsion systems, the program is driving workforce development, supply chain integration, and advanced manufacturing capability across Australia’s defence sector.
For Australian industry, the early acquisition of critical components provides greater schedule certainty, creates opportunities for local suppliers, and strengthens Australia’s position as a sovereign builder and operator of nuclear-powered submarines.
With reactor production underway in the UK and infrastructure construction progressing at Osborne, the SSN-AUKUS program is now entering a critical phase, transforming Australia into one of only a handful of nations capable of designing, building and sustaining nuclear-powered submarines domestically.
Stephen Kuper
Steve has an extensive career across government, defence industry and advocacy, having previously worked for cabinet ministers at both Federal and State levels.
