About HALF of them are rusted hulks and will require search parties if pressed into combat! Just look at the 'new' sub they sent to Cuba...POS was falling apart! XD!
Most weren't designed as subs originally ... the 'Moskva' for example. Originally designed as a P.O.S. 'carrier killer' cruiser but now very successful as a long-endurance submarine. It hasn't resurfaced since it began its first dive on 14 April 2022.
They are conting all the War Thunder players uing anything made in the Soviet Union. So, anyone wiht a T-65, T-72, a Katyushka truck, or a fifth of vodka counts. XD