There is a bit of frustration regarding the russian "Kilo" subs, indicriminately shooting Kalibr missiles into ukrainian cities.
https://www.navyrecognition.com/inde...submarine.html
If we cannot track and destroy these things without having ships in the vicinity, this is basically a declaration of bankruptcy.
I know that they are silent and theoretically able to stay up to 260 hours submerged and 45 days overall patrol time, however their submerged operational radius should not be that big.
Could we detect them snorkeling?
How about a net of passive/active stay-in-place sonobuoys dropped by helicopters.
Self-activating loitering torpedos tuned on their noise signature.
Why are they not attacked when being rearmed in Sevastopol?
There is some growing fury about this, and not only in our "club".