New AUKUS submarine support site launched in Western Australia

June 8, 2026, by Fatima Bahtić

A new naval support site has been established in Perth, Western Australia, as part of the AUKUS trilateral security partnership between Australia, the United Kingdom, and the United States.

As of May 30, the US Navy has established a new naval support activity in Perth, Western Australia, as part of AUKUS. The move follows the trilateral Joint Statement on May 30, confirming that key milestones continue to be met for Submarine Rotational Force – West (SRF-West).

Australia is set to receive used nuclear-powered submarines from the United States under a revised AUKUS agreement, replacing an earlier plan that envisaged a mix of new-build and in-service boats.

Australia’s nuclear sub fleet to be built on used US boats under revised AUKUS plan

Authorities

Naval Support Activity (NSA) Stirling will provide support services and programs for US service members, civilian personnel, contractors, and their families assigned to SRF-West, which will support the rotational presence of US and UK nuclear-powered fast attack submarines at Australia’s HMAS Stirling base in Western Australia.

“Establishment of NSA Stirling with our AUKUS partners demonstrates our command mission to support the Fleet, warfighter, and family,” said Vice Adm. Scott Gray, Commander, Navy Installations Command.

“By providing essential services to U.S. personnel and their families, NSA Stirling will enhance rotational submarine force readiness.”

“We are currently in the early stages of establishing NSA Stirling,” said Rear Adm. Ian Johnson, commander of Navy Region Japan.

“While there is still much work ahead, we are confident in our ability to accomplish this task through strong collaboration with our AUKUS partners.”