What happened
- The dock will be built in Western Australia, linked to HMAS Stirling and the Henderson Defence Precinct.
- It is needed from the early 2030s, ahead of depot-level submarine maintenance from the late 2030s.
- The work is backed by an initial A$12 billion for the Henderson precinct.
Why it matters
New docks bring new shore services and new maintenance regimes. Systems that are commissioned clean and documented stay easier to sustain.
SI briefing summarising public reporting by Minister for Defence. Figures are as reported by the source.

