Inside the $30 billion shipyard build taking shape at Osborne

Australian Naval Infrastructure appointed a joint venture of Laing O'Rourke Construction and Amentum Australia as Capability Partner in July 2026 for the Nuclear-Powered Submarine Construction Yard at Osborne, South Australia.

The Capability Partner works inside ANI's Integrated Delivery Office, providing leadership across governance, assurance, logistics, commissioning, digital engineering and supply chain quality, along with program and construction management of nuclear-related civil infrastructure and nuclear safety leadership.

ANI has already awarded around $1.9 billion in contracts, primarily to Australian businesses, against a projected total investment of $30 billion over coming decades to build the yard. Construction of Australia's first SSN-AUKUS submarine at the site is to begin by the end of this decade.

What is being built

The Nuclear-Powered Submarine Construction Yard sits beside the existing Osborne Naval Shipyard on the Lefevre Peninsula, about 19 kilometres north of Adelaide. It is an expansion of the existing shipyard, and it divides into three functional areas plus marine works:

The nuclear content is what makes this different from any other industrial building project in Australia. The propulsion systems will arrive as fully manufactured, sealed packages and be stored in a purpose-built, secure area on site until each submarine is ready for installation. That brings regulatory, security and quality requirements well beyond those of a conventional industrial build.

Who holds work

Preliminary enabling works commenced in December 2023.

Supporting infrastructure is already delivering. Eurimbla Way, an elevated road linking Pelican Point Road to the shipyard over the rail corridor, was completed by around 170 workers and opened to traffic on 9 February 2026. Around 1,100 workers are now contributing to the yard and associated projects, including about 100 on the Skills and Training Academy campus, 400–500 on the Production Demonstration Facilities, and about 500 designers and project managers. The academy is on track to begin operations from the first quarter of 2028.

How the funding is structured

The Federal Government has committed A$8.5 billion to date, in two 2026 announcements: $3.9 billion in February, described as a down payment, and a further $4.6 billion in July.

ANI describes the funding as equity: the July announcement brought the Government's total equity contribution in the government-owned company to $8.5 billion for the project.

The remaining roughly $21.5 billion of the $30 billion projection is not yet committed. The Government has said future investment decisions will follow as designs mature and licences progress, including for the consolidation, launch and commissioning facilities, and that total construction costs will depend on the design and commercial delivery arrangements ANI negotiates.

Why this matters to contractors who have never worked defence

Three reasons this is worth attention even for firms with no naval experience:

The trades are conventional. Fabrication halls, workshops, wharves, dredging, roads, training facilities and demonstration buildings. This is heavy industrial construction, marine civil and building work — not submarine engineering. The specialist content sits in what the facility eventually does, not in most of what is built.

It runs for decades, in one place. A $30 billion program in a single precinct over decades is the opposite of the project-to-project cycle most Australian contractors run on. For South Australian firms particularly, it is the most durable pipeline in the state.

Entry requirements are the barrier, not capability. Security clearances, defence industry accreditation and supply chain assurance take time to obtain. Firms that want work in 2029 need to start the qualification process well before then. The Capability Partner's remit explicitly includes supply chain quality.

The broader submarine program, not the yard alone, is expected to create nearly 10,000 jobs in South Australia.

What to watch

1. Further investment decisions on the balance of the $30 billion, which the Government has tied to design maturity and licensing.
2. Package releases under the Capability Partner arrangement, and how supply chain access is structured.
3. Area 3 procurement — consolidation, launch and commissioning, the most technically demanding scope.
4. Skills and Training Academy opening in early 2028, which is the workforce pipeline for everything that follows.
5. The end-of-decade construction start for the first SSN-AUKUS — it is the fixed point the whole facility program works back from.

Published 1 September 2026 · Updated 4 October 2026