@ Lau
Really your commanders will refuse performance of the tasks on existing submarines?
"I refuse to carry out the task - because my submarine too noisy!
And the torpedos have not a long range... "
Battle by that weapon which is present.
PS: I will consult with RA by the members of a team - we shall be possible to do "Suffren" SSN a class.
However it will increase time of an output of addition by some time.