Billions of dollars have been set aside to extend the lifespan of the ageing Collins class of submarines before AUKUS ships become part of the fleet.
The Albanese government announced on Tuesday it will be changing its sustainment approach to the boats, meaning the six submarines won't have their decades-old propulsion generators replaced.
Rather, an analysis of each submarine will take place to determine what needs to be replaced in order to keep the boats in service.
