[2][3] Late 1950s and 1960s was an era of considerable advancement for the navy, primarily due to the emergence of sea-based nuclear missiles, which turned submarines into strategic weapons.

The introduction of nuclear power plants on submarines greatly increased their autonomy, cruising range, underwater speed, and thus the severity of the threat they posed.

In addition, starting from a cold state took 5–10 minutes for the GTU compared to the several hours required for the STU.

For the first time in Soviet shipbuilding, it was equipped with two anti-aircraft missile systems (M-1 "Volna").

Each complex consisted of a two-boom launcher ZIF-101, a Yatagan control system and a magazine with two rotating drums for 8 V-600 missiles each.