The aim is for the RAN to end up with a single fleet of 8 SSN-A’s
However, the clock doesn't stop when we get to 8 SSN-A's.
Hopefully, Australia will learn that the smart way to build big things like subs is to always have one on the production line. If they have a 33-year lifespan, we need to be building one every 4 years. When we need a newer model down the track, we modify the existing production line. Not close it down, sack everyone and then go "oh, wow, look how much it's gonna cost us to start a whole new sub-building industry again".