Nuclear submarines will allow Australia to project maritime power far from our shores. This is critical for an island nation heavily dependent on trade by sea.
This is a counterpiece to Security without submarines: the military strategy Australia should pursue instead of AUKUS, which was published (and posted here) about a week ago.
I really like how this series has discussed / explored some diametrically opposed ideas.
Personally I’ve found the arguments here about the need to defend trade routes and undersea cables compelling, but that also doesn’t seem to necessarily conflict with one the previous author’s suggestions for a larger number of smaller and less expensive, less vulnerable vessels (and they specifically advocated for uncrewed ones) instead of 3 nuclear subs.
I think the complexity of nuke subs is only justified if you also have nukes. They are ideal for a crew to go out with a complement of 16 nukes to loiter in the unknown depths for 6 months. They’re just out there as a deterrent to let your enemies know that Very Bad Things will suddenly happen if they want to try to lob a few nukes first.
Other than that particular purpose, they are quite an costly way to just go out and patrol your territory. That whole nuclear supply chain is ridiculously expensive. Drop that expense and you can get quite a lot more hardware for your money.
Hear hear, and manufacture drones (aerial, not just naval), lots of drones, just look how effective they are in Ukraine. As long as you keep AI out of it. Wow, that vid is 8 years old now, still effective. You could literally encircle the country in overlapping drone ranges for less than one sub I’ll bet. Sure would be nice to lead instead of follow for once.