Will all submarines, even nuclear ones, be obsolete and ‘visible’ by 2040?

time they hit the water in the 2040s due to new technologies making
underwater vessels “visible”, some experts argue. One of the
controversies over the federal government’s decision to ditch the $90bn
deal to build conventional submarines in favour of nuclear boats is the
timeline for getting them battle-ready. The navy will have to stretch out
the lifespan of the existing Collins-class fleet and possibly hire
submarines to fill the gap before the new ones are on the horizon. But even
before the deal to buy 12 submarines from France’s Naval Group was made,
military analysts warned that submarines of all types would be rendered
obsolete by new technology including submersible drones and new weapons
systems.

 Guardian 4th Oct 2021

 https://www.theguardian.com/australia-news/2021/oct/05/will-all-submarines-even-nuclear-ones-be-obsolete-and-visible-by-2040