Power Raid
We Exist To Win Premierships
Our subs did some serious damage to the US fleet in wargames...The US has a weakness against diesel subs (which is why they hired the swedish boat...to (re)learn how to counter them).
The problem with them is that they're tiny...~1600 tonnes. (A26 isn't much bigger at 1900).
To get the fuel capacity/range we'd need, 4000 would be bare minimum, 5000 more likely (The A26 variant proposed for us is 4000 tonnes), but clearly that would be a massive change. They'd also probably need significant changes in the electronics....So basically, we'd have the same situation we had with the Collins class boats...A massively upsized Swedish boat with a separately sourced fire control system.
yep
the reality is by making a conventional sub larger, you lose 90% of its advantage which is by being small is suitable to close to shore and shallow warfare.