AUKUS At Risk: US Shipbuilding Bottlenecks Threaten Australia’s Nuclear Submarine Plans

The AUKUS agreement was conceived as a landmark trilateral initiative to redefine strategic balance in the Indo-Pacific. Announced in 2021, its central pillar—providing Australia with nuclear-powered submarines—aimed to elevate Canberra to the status of a leading maritime power in the region, countering the expanding presence of China’s navy. The plan involved a phased acquisition: short-term procurement of Virginia-class submarines from the United States, followed by the development of a new AUKUS-class platform jointly with the United Kingdom. Yet, as deadlines approach and budgetary commitments mount, structural limitations in U.S. industrial capacity are casting doubt on the feasibility of the entire programme.

Australia’s strategic calculus, based on confidence in allied delivery capabilities, is now entering a phase of growing uncertainty. As reported by The Guardian on July 28, 2025, Admiral Daryl Caudle, nominee for Chief of Naval Operations, told the U.S. Senate Armed Services Committee that the current shipbuilding rate is insufficient to meet even domestic demand. To fulfil its own requirements, the U.S. Navy needs to produce 2.0 Virginia-class submarines per year; to meet AUKUS commitments, this figure must rise to 2.3. Presently, the U.S. is producing just 1.13 units annually.

Caudle was unequivocal: without a 100% increase in production, the U.S. will not be able to deliver any submarines to Australia. His remarks underscore the structural limits of the American naval-industrial base, despite substantial federal investment and sustained allied contributions—Canberra has already paid $1.6 billion to support U.S. shipyards, with total commitments rising to $4.7 billion. The implications for Australia are profound. Under current timelines, Canberra is scheduled to receive between three and five U.S.-built submarines from 2032 onward, before fielding its own AUKUS-class vessel in the early 2040s.

However, the delays in U.S. production threaten a capability gap as the ageing Collins-class fleet nears obsolescence.