>>64431354
By all accounts, their ssgns, ssbns, and every ssn prior to the early akulas are loud enough to be heard for tens of miles and not able to counter detect flight 1 los angeles class subs(1976) at standoff range, let alone a diesel boat run by and nato nation. A huge flaw in the oscar and typhoon designs made their sound absorption wear away rapidly. You could barely hear them coming out of port but soon enough they started singing. Also the cube.