On a more serious note, if you place the Kilo in Argentinian or Norwegian littoral waters in a defensive position, she WILL mess up your fleet, as was seen on Joint Winter '04 IIRC. *COUGH HMS Invincible and half the landing fleet to the bottom because of one di/el sub /COUGH*
Probably the proudest moment in the Norwegian subfleet's history.
Photo courtesy of www.mil.no