I've tried to work this one out. I don't have a clue. GF seems to have ruled out AIP and nuke (which is a form of AIP) and hints at some new magical advance that will give the subs all you could want.From what I have read, the government has stated that the propulsion systems it is looking at are more modern that AIP. I know it wont be nuclear, but what it will be I have no idea. Does anybody have any ideas, or is it hush hush?
So that leaves improved storage technologies (Li ion, Zebra, AGM, supercapacitors etc) which don't really offer much/anything over traditional storage, or some new advanced diesel (not Gas turbine either). And there haven't been any significant advances there either. I dunno solar powered submarines? Dismounted power (ie submarine cables?)???? Zero point energy, Farnsworth Fusors?
I don't expect anything revolutionary in terms of propulsion, I would expect a revolution in weapon systems that make the propulsion thing less relevant.
I just wish GF would spell it out. Or drop more hints.
Australia has always had hedging strategies in terms of nuclear power. ANSTO, laser refining, mining capability etc are part of that. We also previously were involved in several missile programs.
But Australia doesn't need Nukes, infact becoming a nuclear weapons owner would not be a good thing for us. We can over come almost any fanciful invader conventionally. It would justify the other locals getting nuclear technology, which would be a very bad thing.
Although RAN subs have never been involved directly in a war where they have sunk an enemy ship, they have seen plenty of "use". The incidences are numerous, and they are doing front line stuff every day that risks equipment and lives.
Except for the UK SSN's (faulklands), you could say every SSN in the world has never seen action.