Could the expanded Australian industry build warships?

What warship-construction capability would Australia gain from this infrastructure program?

It could probably build its own destroyers and full-size cruisers.

Ship construction follows naturally from the enlarged repair, engineering, and workforce base. Australia would probably gain the capacity to build destroyers and full-size cruisers instead of merely servicing ships sent from Britain. That capability depends on sustained investment in skilled labor, yards, and supporting industry as well as dock construction. Fleet-maintenance policy therefore shapes the long-term ability to construct complex warships locally.