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 expertise and delivery capacity across governance, assurance, logistics, commissioning, digital engineering and supply chain.
Around $1.9 billion in contracts has already been awarded, against a projected total investment of $30 billion over coming decades. Australia is to begin building SSN-AUKUS submarines at the site by the end of 2030.
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For a build of that scale, it receives remarkably little attention in construction trade coverage — which is itself an opportunity.
What is being built
The Nuclear-Powered Submarine Construction Yard sits north of 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 ancillary works:
| Area | Scope |
|---|---|
| Area 1 — Submarine fabrication | Fabrication buildings, workshops and manufacturing areas for processing raw steel into submarine components |
| Area 2 — Submarine outfitting | Buildings for outfitting submarine sections and structures with welded components |
| Area 3 — Consolidation, launching, testing and commissioning | Submarine launch facility, wet basin, wharf and supporting facilities. The nuclear propulsion system is expected to be stored and fitted in this area |
| Ancillary | Localised dredging within the Port River |
Area 3 is the one that makes this different from any other industrial building project in Australia. A facility where nuclear propulsion systems are stored and installed carries regulatory, security and quality requirements with no domestic precedent in a construction setting.
Who holds work
| Role | Holder |
|---|---|
| Capability Partner | Laing O'Rourke Construction and Amentum Australia joint venture (July 2026) |
| Design Partners | Kellogg Brown and Root, AECOM and Aurecon joint venture |
| Early works — staging and laydown | Shamrock Civil |
| Procuring agency | Australian Naval Infrastructure, in partnership with the Australian Submarine Agency |
Enabling works commenced in December 2023.
Supporting infrastructure is already delivering. Eurimbla Way, linking Pelican Point Road to the shipyard, was built by around 170 workers and became operational on 9 February 2026. More than 500 South Australians are working on the Skills and Training Academy campus and Production Demonstration Facilities, with the academy due to take its first students in 2028.
The funding is not settled in form
The Federal Government has committed A$8.5 billion, arriving in two 2026 announcements: $3.9 billion in February, described as a down payment, and a further $4.6 billion.
ANZIP records that the Government has not confirmed whether the $3.9 billion will be provided as funding, debt financing, or an equity contribution to the government-owned Australian Naval Infrastructure.
That is not a technicality. Whether $8.5 billion is a grant, a loan or equity determines ANI's balance sheet, its borrowing capacity, and how the remaining $21.5 billion of a $30 billion program gets financed.
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 — which is where that access gets structured.
The broader submarine program is expected to create close to 10,000 jobs in South Australia.
What to watch
- Whether the $8.5 billion is confirmed as funding, debt or equity, which shapes how the balance of the $30 billion is raised.
- Package releases under the Capability Partner arrangement, and how supply chain access is structured.
- Area 3 procurement, the most technically demanding scope and the one with no Australian precedent.
- Skills and Training Academy opening in 2028, which is the workforce pipeline for everything that follows.
- Whether the end-of-2030 construction start for the first SSN-AUKUS holds — it is the fixed point the whole facility program works back from.
In this story
- Osborne Submarine Construction Yard
- Laing O'Rourke
- Amentum Australia
- KBR
- AECOM
- Aurecon
- Shamrock Civil
- Australian Naval Infrastructure
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