Italy should be fine, they have their own comparable classes (like Marcello and Marconi), plus they could get some mentioned ex-US boats.
Although would be behind in the modern era.
In general, yeah, submarines is a very special type of vessels, their effectiveness will depend on the implementation a lot, looking at mobile variant of the game I don’t have high hopes.
Technically that was a thing at the beginning on this year for one update cycle before a dev realised & went “oops shit, you weren’t meant to see this yet” as such examples from the RUR-4 on the Isuzu class Destroyer Escort (also seen on the Mistcher class Destroyer Leader), Limbo mortar for the Type 12 ASW Frigate (also seen on the Restigouche class Destroyer):
Also a magnitude of other vessels (half further screenshots), RowanFW also has recording of this from a video he made earlier this year, if you want to see footage vs pictures.
Funny to think, the gun armament is WWII era, but the ASW is cold war & the hull is from 1968…
But at the same time, wishful thinking suggests vessels starting as early as they can possibly be & extending deep into the 1960’s or even the 1970’s, I’d personally want the E class Boat of Great Britain specifically for Australian E class Boats like HMAS AE1 & AE2 (only successful unit of the Gallipoli campaign & the other went down with all hands without a trace), but going as far as say the Japanese Uzushio class submarine (mainly due to my enjoyment of the Type 72 Mod 1 torpedo found on the Type 11 Motor Torpedo Boat, now I could spam even more torpedoes vs just four)
JDS Chikugo is one of my favorite ship, overpowered ASW weapons for it’s size and outdated Gun armament from other retired JMSDF vessel for saving cost. It’s has AN/SQS-23 sonar and SQS-35(J) VDS, and spamming ASROC and mk46 at 3.3 against those early submarines should be fun lol
Are there specifically coastal submarines is that thing? I honestly think a midget submarines could fit the coastal tree while the fleet submarines go into blue water.
Meanwhile coastal over here with +70% bluewater vessels in it from Rank I - Rank V… I logically think they should be split between branches, but going by gaijin logic, they’d probably be coastal.
Hmm, didn’t realise the 3"/50 Mk. 22 cannons were from another JMSDF vessel (then again the first cannon of the type was tested the day after the second world war end, so by 1968 it would be old).
Heh, I would adore depoying the SQS-35(J) in battle, be like taking an L3 tankette for a walk in GF, my little yellow submarine… the RUR-5 if activated would lead the JDS Chikugo DE-215 from being a background vessel currently to one of the forerunner advance ASW Combattantes in game (now if only Mk. 31 AAVT could actually do damage to aircraft, than she’d be golden imo).
I had that idea to there where many frogman type vehicles bolted to subs to get them to the target. For most you could have the midget sub be its own thing in the tree plus as a unlockable attachment. However its not a free lunch.