When did the Soviet Navy reach peak effectiveness?

Did the Soviet Navy reach its high-water mark in training and effectiveness during the 1960s or 1970s?

Its relative overall effectiveness probably peaked in the 1970s, although later ships and planned 1990s programs were technologically better.

The Soviet Navy arguably reached its greatest effectiveness relative to other powers in the 1970s. Its individual ships continued to improve, and designs being built for the 1990s promised further advances. Assessments based only on fighting a war can overlook the political purposes of these ships. In this interpretation, the Soviet fleet sought to shape the peace so that it would be in a better position if war came.