US$76.6bn US submarine investment delivers major boost for AUKUS

While the contracts represent one of the largest submarine procurement packages in US history, their significance extends well beyond the US Navy. For Australia, the investment provides a critical boost to the industrial capacity that will ultimately deliver the submarines central to the AUKUS Pillar 1 pathway.

NNS President Kari Wilkinson said: “These contracts provide the American shipbuilding industrial base the opportunity to demonstrate that commitment in a meaningful way and we are honoured to serve our customer and our country.”

Australia is expected to acquire at least three Virginia Class submarines from the United States in the early 2030s before transitioning to the jointly developed SSN-AUKUS Class later in the decade. Achieving that timeline has depended on one key factor: the ability of the United States to expand submarine production while meeting its own fleet requirements.

Wilkinson said: “We are committed to building the nuclear-powered submarines that protect our nation.”

For several years, concerns have persisted that US shipyards were producing fewer than the two Virginia Class submarines per year needed to sustain both the US Navy’s force structure and future transfers to Australia.

Workforce shortages, supply chain constraints and maintenance backlogs have all contributed to production delays, prompting questions about whether AUKUS delivery schedules could be maintained.

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The new contracts are designed to address those challenges. Beyond funding the submarines themselves, they include billions of dollars for modernising shipyard infrastructure, expanding manufacturing capacity and growing the highly skilled workforce required to sustain higher production rates across both HII and Electric Boat.

That industrial investment is particularly important because Newport News Shipbuilding is the only US shipyard capable of designing, building and refuelling nuclear-powered aircraft carriers and, together with Electric Boat, one of only two capable of constructing nuclear-powered submarines. Expanding capacity across both shipyards is widely regarded as essential if the United States is to simultaneously replace its ageing Ohio Class ballistic missile submarines with the Columbia Class while increasing production of Virginia Class attack submarines.

The inclusion of nine Block VI Virginia Class submarines is also strategically significant. Building on the Block V design, the new submarines are expected to further enhance strike capability, acoustic performance, survivability and the integration of advanced autonomous and undersea systems, ensuring the class remains the backbone of US undersea warfare well into the second half of the century.

For Australia, the announcement offers greater confidence that the industrial reforms supporting AUKUS are beginning to take shape. Canberra has already committed billions of dollars to strengthening the US submarine industrial base, recognising that expanding American production is a prerequisite for receiving Virginia Class submarines while maintaining US undersea deterrence.

Although substantial challenges remain, including workforce development, supply chain resilience and achieving sustained production of two or more Virginia Class submarines annually, the scale of this latest investment demonstrates Washington’s determination to rebuild its naval shipbuilding capacity for an increasingly contested Indo-Pacific.

As strategic competition continues to intensify, the contracts reinforce that AUKUS is not simply a technology-sharing agreement, but an industrial partnership. Expanding the capacity of the US submarine enterprise today will be essential to delivering the sovereign undersea capability Australia intends to field over the coming decades.

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.