What is the purpose of the new undersea cables near HMAS Stirling?

The new undersea cables planned by Google and SUBCO near the HMAS Stirling naval base in Australia are intended to boost the military's digital resilience and connectivity, including for the U.S. Virginia submarines that will be based there from 2027.

How will the AUKUS submarine fleet base benefit from the new cables?

The HMAS Stirling naval base, which will house the U.S. Virginia submarines as part of the AUKUS partnership, will be at the center of the new high-speed internet cable network being built by Google and SUBCO. This will provide critical data connectivity for the military operations at the base.

What is the strategic significance of the cable landing near HMAS Stirling?

The landing of the new Google and SUBCO cables near the HMAS Stirling naval base is seen as strategically important, as it will place the base at the heart of a rapidly expanding subsea internet network that can support Australia's military and AI ambitions in the region.

Home / Technology / Google, SUBCO Cables Converge at Australia's AUKUS Submarine Base

Google, SUBCO Cables Converge at Australia's AUKUS Submarine Base

13 Nov, 2025

Summary

New undersea internet cables planned by Google and SUBCO to connect Australia's coasts and regions
Cables to land near HMAS Stirling naval base, home of U.S. Virginia submarines from 2027
Cables seen as critical for Australia's military digital resilience and AI ambitions

Google, SUBCO Cables Converge at Australia's AUKUS Submarine Base

As of November 13, 2025, Australia's AUKUS submarine fleet base and its vicinity are quietly being connected to three powerful new undersea internet cables planned by Alphabet's Google and local company SUBCO. The HMAS Stirling naval base on Australia's west coast will house four U.S.-commanded Virginia submarines from 2027, placing the U.S. Navy on the Indian Ocean's rim as Washington and Canberra step up surveillance of Chinese submarine activity.

The superfast cables being built by Google and SUBCO will span the Indian Ocean to Africa and Asia, and connect Australia's east and west coasts, with landing points near HMAS Stirling. This places the base at the center of a rapidly expanding network as Australia seeks to bolster its digital resilience for military purposes. SUBCO says a new high-capacity cable connecting Australia's coasts will include a branch to HMAS Stirling, while Google's plans include cables to Australia's Christmas Island and across the Indian Ocean to Africa.

Experts say militaries need high-speed data connectivity between installations and allies, and the new cables will provide better resilience against incidents of cable sabotage globally.

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