Duratec-Ertech JV Secures $281m HMAS Stirling Defence Upgrade Contract
Duratec's joint venture with Ertech has clinched a $281 million contract to upgrade submarine infrastructure at HMAS Stirling, marking a major step in Australia's AUKUS defence preparations.
- DEJV awarded $281m contract for HMAS Stirling submarine infrastructure
- Early works started in January 2026 under $9.2m separate contract
- Total contract value nears $300m over 24 months delivery period
- Project supports AUKUS rotational force infrastructure upgrades
- Duratec leverages strong Defence sector relationships
Major Defence Contract for HMAS Stirling Infrastructure
Duratec Limited (ASX:DUR) and Ertech’s 50:50 joint venture, Duratec Ertech Joint Venture (DEJV), has been awarded a substantial $281 million contract to deliver critical infrastructure upgrades at HMAS Stirling on Garden Island, Western Australia. This project is designed to support the future submarine capability tied to the AUKUS partnership, which sees rotational forces from the United States and United Kingdom stationed at the base.
Early works valued at $9.2 million began on site in January 2026, alongside procurement of $5 million worth of long lead items. These activities ran concurrently with the finalisation of contract design, which has now reached near completion and received final approval. The main works contract spans approximately 24 months, bringing the total contract value close to $300 million.
Strategic Importance and Delivery Approach
Duratec’s Managing Director Chris Oates highlighted the contract as a pivotal milestone, underscoring the success of the Early Contractor Involvement (ECI) Planning Phase. The DEJV’s ECI approach has reinforced its capability to deliver complex Defence infrastructure projects on time and in compliance with stringent requirements.
This contract is a clear extension of Duratec’s growing footprint in Defence infrastructure, complementing recent expansions and contract wins across multiple sectors. Notably, the company’s robust performance was detailed in its recent record half-year revenue report, which highlighted strategic growth in Defence alongside Mining and Energy.
Implications for Duratec’s Market Position
The award further cements Duratec’s reputation as a leading contractor in Defence infrastructure, leveraging its engineering expertise and advanced technologies such as 3D capture and predictive analysis tools. Headquartered in Wangara, Western Australia, Duratec’s national presence and multi-sector capabilities position it well to capitalise on Australia’s increasing Defence spending and infrastructure modernisation.
While the contract details do not disclose specific financial guidance or cost breakdowns, the transition from planning to full delivery signals a critical phase for project execution and revenue recognition. Investors will be watching how Duratec manages this large-scale contract alongside its recent acquisitions and expanding project portfolio.
Bottom Line?
Duratec’s $281 million Defence contract marks a strategic leap into high-value infrastructure delivery, but execution over the next two years will be crucial to sustaining momentum.
Questions in the middle?
- How will Duratec manage resource allocation between this large Defence contract and its recent acquisitions?
- What are the potential risks in transitioning from the ECI Planning Phase to full project delivery at HMAS Stirling?
- Could this contract pave the way for further Defence infrastructure opportunities under the AUKUS partnership?
