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Aukus will cost Australia $368bn. What if there was a better, cheaper defence strategy?
(www.theguardian.com)
this post was submitted on 15 Jun 2025
31 points (97.0% liked)
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A nuke sub operating there for a couple of months is still better than a DE that leaves after a week (presuming it can reach that far at all).
You have a massive misconception about the current capabilities of Diesel powered subs. They have a range of 8000nm +x (most sources give a range of 12000nm for next generation subs), can stay submerged for 30+ days and are far quieter than Nuclear subs.
If we're so concerned about the South China Sea, we can give Taiwan or Japan diesel subs. It's not like the nuclear subs would be of much use to us anyway if they're on the other side of Indonesia.
Although I can't imagine an Internal Combusion Engine sub being at all stealthy, so I'd hope there's some kind of third option.
Diesel-electric subs are actually far quieter than Nuclear subs, and have out performed them regularly in war games.
It isn’t a black and white case of one technology being better than the other but nuclear costs a lot more.
Diesel electrics can be very stealthy, with the potential to be even more so than nuclear subs when trying to hide (given equivalent level of technology elsewhere in the design). What they can't do is continue being stealthy for anywhere near the time a nuclear sub can as eventually you need to come near the surface and run the diesel to recharge the batteries. Diesel electrics are also comparatively range limited - while they can travel a considerable distance nuclear subs are effectively only limited by their ability to supply the crew.