Launch warning times.

[SongofWar]

To go back to the tracking thing for a sec, if the soviets were tracking US missile boats they certainly wouldn't share that info publicly, and the americans wouldn't have anything to gain by leaking it either.

There are some stories out there from the soviet side of the submarine "war" (for lack of a better word...submarine cold war perhaps?). Apparently the Victor-Class boats did a pretty good job messing with the ASW detection systems on the east coast. Then again, the truth is probably some compromise between the official position of either side.