We had a SOSUS net that ran from the North Cape of Norway to Bear Island in the Arctic.
As soon as the Soviets left their bases on the Kola Peninsula, we could hear them.
Except for K-172, when it took up a firing position off Israel to launch its eight SS-N-3 nuclear missiles in the event the Israelis occupied or nuked Damascus.
It was after that that the Israelis adopted the reccomendations of Project Daniel around 2003.