AUKUS Submarine Deal Faces Mounting Doubts Amid US Production Challenges

Growing Skepticism Over Virginia-Class Submarine Delivery to Australia

Increasing doubts are being voiced regarding the United States' capacity to deliver Virginia-class nuclear-powered submarines to Australia as stipulated under the AUKUS security pact. Critics point to persistent shortfalls in US submarine production and recent legislative discussions in Washington as key indicators of potential delays or alterations to the ambitious defense agreement.

AUKUS Agreement and Submarine Acquisition Plan

The AUKUS trilateral security partnership, announced in September 2021, involves Australia, the United Kingdom, and the United States. A central component, known as Pillar 1, outlines Australia's acquisition of nuclear-powered attack submarines (SSNs). The plan is structured in two main phases:

• US Virginia-class Submarines: Australia is slated to purchase between three and five Virginia-class SSNs from the US, with initial deliveries projected to begin as early as the early 2030s. The US Navy specifically intends to sell used Block IV Virginia-class submarines in 2032 and 2035, followed by a new Block VII boat in 2038. These vessels are intended to serve as an interim capability.
• SSN-AUKUS Class: Subsequently, a new SSN-AUKUS class submarine, co-developed by the UK and Australia and incorporating US technology, is expected to enter service around 2040 for the UK and the early 2040s for Australia.

US Production Capacity Under Scrutiny

A primary concern underpinning the doubts is the United States' struggle to meet its own domestic Virginia-class submarine production targets. While the US Navy has aimed for a production rate of two submarines per year since fiscal year 2011, the actual output has consistently fallen short. Since 2022, the production rate has hovered between approximately 1.1 and 1.3 boats per year, leading to a growing backlog of submarines that have been procured but not yet built.

To fulfill both its own requirements and the commitments to Australia, the US would need to increase its production rate to 2.0 boats per year by 2028, and subsequently to 2.33 boats per year. Admiral Daryl Caudle, a nominee for Chief of Naval Operations, has stated that the US would require a '100% improvement' in shipbuilding rates to facilitate sales to Australia. Challenges cited include workforce shortages, supply chain bottlenecks, and insufficient investment in the industrial base.

Congressional Report Fuels Uncertainty

Further exacerbating concerns, a January 2026 report by the US Congressional Research Service (CRS) openly explored the option of the US not selling any nuclear submarines to Australia. The report suggested that these submarines could instead be retained under US command for potential deployment in a conflict with China over Taiwan. It argued that transferring SSNs to Australia might render them unavailable for a US-China crisis, potentially weakening deterrence. The report also highlighted Australia's strict non-proliferation laws, which mandate that its attack submarines be armed only with conventional weapons.

Despite these challenges, the Australian Submarine Agency maintains that Australia's commitment to the AUKUS partnership remains 'unwavering,' with all three nations investing significantly in their industrial bases to ensure the agreement's success. However, the Australian Strategic Policy Institute (ASPI) has warned of a 'looming period of strategic risk' for Australia, noting that the projected delivery of the first US Virginia-class submarines in 2032 may be too late to address immediate deterrence gaps. The AUKUS deal is estimated to cost Australia up to A$368 billion by the mid-2050s.