The Australian government has affirmed that United States submarines will maintain a long-term presence at the HMAS Stirling naval base in Western Australia, following confusion over remarks by Defence Minister Pat Conroy regarding the future of US deployments. The clarification was provided by Defence Minister Richard Marles after Conroy suggested the US submarine rotations could end in 2032.

Under the current Submarine Rotational Force-West (SRF-W) agreement, up to four US Virginia-class nuclear-powered submarines are expected to operate from HMAS Stirling starting next year. The arrangement has been described by both governments as a vital strategic enhancement, allowing the US to project power in the Indo-Pacific region from a position largely beyond the reach of Chinese missile capabilities.

Conroy’s comments on an Australian Broadcasting Corporation program earlier this week sparked debate when he indicated that the rotational deployments would conclude in 2032, coinciding with Australia’s anticipated arrival of its own Virginia-class submarines. Conroy also suggested that the US presence might reduce as Australia takes on greater responsibility for regional security with its own fleet, and that any sustained US deployment beyond that point would be subject to decisions by future Australian governments.

This position appeared to conflict with previous assurances and prompted criticism from Opposition defence spokesperson James Paterson, who accused Conroy of effectively issuing an “eviction notice” to the US Navy prior to any vessels arriving. Paterson also criticized subsequent attempts by the government to temper the minister’s remarks, describing the situation as a source of “confusion.”

Minister Marles sought to reinforce the government’s commitment, stating the SRF-W at HMAS Stirling is intended to be an enduring component of US force posture in Australia. He emphasized that this understanding has been consistent since the arrangement was first announced.

Further context was provided by the US Navy, which in June reactivated Submarine Squadron 3 — previously decommissioned for 14 years — with a new home base at HMAS Stirling. Rear Admiral Chris Cavanaugh, commander of the US Pacific Fleet’s submarine force, highlighted that positioning an additional forward-deployed submarine squadron in the Indo-Pacific increases flexibility and responsiveness across a range of missions.

While the details around the timeline and scope of US naval presence in Australia remain under discussion, both Canberra and Washington signal the partnership as a cornerstone of their strategic cooperation amid rising regional tensions. The potential deployment of nuclear-armed Virginia-class submarines after 2032 forms part of ongoing debates about the future of Australia’s defense posture and its alignment with US forces in the region.