The US Virginia-class submarine USS Hawaii (SSN 776) has arrived at the USS Stirling in Western Australia. The historic visit marks Australia’s first Submarine Maintenance Period (STMP) and showcases the growing partnership between Australia, the United States and the United Kingdom.

US Navy Submarine Undergoes Maintenance In Australia For The First Time

The SMTP will involve Australian and US forces operating together on board the USS Stirling.

Joining USS Hawaii is the USS Emory S-Land (AS 39), a US service ship equipped with tools and personnel for major submarine maintenance activities.

The STMP is the first time Australian personnel have actively participated in the maintenance of an Australian nuclear-powered submarine.

Since January 2024, approximately 30 Australian Navy officers and sailors have been stationed on board USS Emery South, gaining vital experience in maintaining nuclear submarines. Hawaii’s crew includes a Royal Australian Navy officer who trained in the United States.

The maintenance work is reminiscent of World War II practices, when the US Navy conducted similar maintenance operations in Fremantle on submarines of the US, British and Dutch navies.

The STMP is a practical guide to the progress of the AUKUS program, highlighting the value of collaborative training and interoperability between partners.

It also provides a unique opportunity to enhance Australia’s technical expertise in radiation monitoring, waste management and emergency response without the need to transport radioactive materials to Earth.

This activity contributes to Australia’s overall goal of preparing for the Submarine Rotary Force West (SRF-West), scheduled to begin in 2027.

The rotational deployment of HMAS Stirling will include one UK Astute-class submarine and up to four US Virginia-class submarines, enhancing Australia’s ability to operate and maintain a future fleet of nuclear-powered and conventionally armed submarines.