How Australia’s Port Development Threatens Its Nuclear Submarine Future

08/13/2025

Australia’s ambitious leap into nuclear submarine warfare through the AUKUS partnership represents one of the most significant strategic pivots in the nation’s defense history.

But a seemingly unrelated infrastructure project in Western Australia may be inadvertently creating a massive security vulnerability at the very heart of this cornerstone defense initiative.

In September 2021, Australia announced its historic commitment to the AUKUS deal. This is a landmark collaboration with the United Kingdom and United States that would see Australia acquire nuclear-powered submarines. The decision marked a dramatic strategic shift, requiring billions in investment and decades of planning to build the infrastructure needed for these cutting-edge vessels.

Simultaneously, the Western Australian government has been pursuing its own ambitious project: Westport, a $7.2 billion initiative to relocate container operations from Fremantle to a new facility in Kwinana. While economically beneficial for the state, this development has created an unexpected and potentially catastrophic security challenge.

The problem lies in geography. Kwinana sits just 20 kilometers from HMAS Stirling on Garden Island which is the Royal Australian Navy’s largest base and the planned home for Australia’s future nuclear submarine fleet, as well as rotational visits from US and UK nuclear submarines.

The Westport project will funnel both high-value nuclear submarine traffic and a rapidly expanding volume of commercial shipping through the same narrow channel in Cockburn Sound. Once fully operational, shipping movements through this critical waterway are expected to more than double, with some commercial docks positioned as close as six kilometers from the naval base.

According to a comprehensive report from the Institute for Integrated Economic Research Australia, co-authored by distinguished military figures Air Vice Marshal John Blackburn and Commodore Vince DiPietro, this configuration creates multiple layers of security risk that appear to have been inadequately addressed.

The security concerns extend far beyond simple traffic congestion. In an era of asymmetric warfare, seemingly benign commercial vessels can become sophisticated weapon platforms. The report points to recent conflicts in Ukraine and Israel, where weapons were successfully deployed from shipping containers.

Ukraine’s “Operation Spider Web” exemplifies this new reality. Drones were smuggled into Russia inside standard shipping containers to attack military airfields. Such tactics transform ordinary commercial vessels into potential covert launch platforms, particularly dangerous when positioned near critical military assets like nuclear submarine bases.

The statistics are sobering: Australia currently operates only 15 commercial vessels over 2,000 tons flying its own flag. This means virtually all increased shipping traffic through Cockburn Sound would involve foreign vessels with varying levels of oversight and scrutiny. This creates what the report describes as a significant “blind spot” in national security.

Beyond direct attacks, the concentration of traffic creates another critical vulnerability: the risk of channel blockage. A single maritime incident, whether accidental or deliberate, could create cascading crises affecting both military operations and civilian infrastructure.

The report cites the 2011 MV Rena incident off New Zealand, where a grounded container ship required six to seven weeks just to remove cargo, with environmental recovery extending for months afterward. A similar blockage in Cockburn Sound wouldn’t merely trap submarines; it would halt all refined fuel deliveries to Perth, which is 100% dependent on fuel imports through the sound.

Such a scenario could cripple everything from military readiness to essential civilian services, ambulances, food transport, and power generation, creating a strategic chokepoint with devastating potential.

Perhaps most troubling is the apparent disconnect between levels of government on these security concerns. Local Western Australian MP Mr. McGinn felt compelled to bypass normal channels and directly brief Washington DC officials about the risks, supported by documentation from the Maritime Union of Australia.

Meanwhile, WA Premier Roger Cook has categorically dismissed these concerns as “wrong.” The report’s authors characterize this response as “opportunistic ignorance.”

Or a tendency to prioritize economically beneficial projects while hoping security concerns simply fade away, rather than conducting comprehensive threat assessments.

The Institute for Integrated Economic Research Australia report poses more than a dozen critical questions that apparently remain unanswered at the highest levels of government:

  • What rigorous risk assessments have been conducted on relocating the port near the naval base?
  • Has a detailed threat assessment been completed focusing on weaponized merchant ships?
  • What contingency plans exist for major channel blockages, and have they been tested?
  • How will the increased foreign vessel traffic be monitored and secured?

The failure to systematically address these fundamental security questions represents what the authors term a significant gap in strategic foresight.

This situation appears symptomatic of a broader challenge facing modern nations: the failure to integrate national security considerations into infrastructure planning from the outset. The report suggests similar vulnerabilities likely exist at other Australian ports near major defense installations, including Darwin, Newcastle, and Sydney.

Australia’s AUKUS commitment represents a multi-billion dollar, multi-decade strategic investment positioned as the cornerstone of the nation’s future defense capabilities. Yet this grand strategic vision risks being undermined by what appears to be inadequate coordination between state economic development goals and federal defense requirements.

The implications extend beyond Australia’s borders. AUKUS is fundamentally about strengthening allied capabilities and regional stability in the Indo-Pacific. Security vulnerabilities that compromise the program could affect allied confidence and regional deterrence strategies.

The situation in Western Australia serves as a stark reminder that national security in the 21st century requires unprecedented integration across all levels of government and infrastructure planning. Traditional threats are evolving rapidly, with asymmetric capabilities emerging that can turn civilian infrastructure into strategic vulnerabilities.

As one of the report’s authors noted, this raises fundamental questions about how nations ensure their grand strategic visions aren’t accidentally undermined by failures to “connect the dots” between seemingly local decisions and overarching national security postures.

For Australia, addressing these concerns may require difficult conversations about balancing economic development with security imperatives and ensuring that the nation’s most significant defense investment in generations isn’t compromised by avoidable vulnerabilities created in its own backyard.

The question remains: in our complex, interconnected world, how many other nations are facing similar blind spots where strategic ambitions could be subtly or not so subtly undermined by a failure to connect these critical dots?

For a podcast discussing this report, see the following:

https://defense.info/podcast/how-australias-port-development-threatens-its-nuclear-submarine-future/