 They were designed primarily as anti-submarine warfare (ASW) vessels, and her weapons and sensor suite was optimized against the nuclear submarine threat.Shipboard ASW armament included a twin SUW-N-1 launcher capable of delivering a FRAS-1 projectile carrying a 450 mm torpedo (or a 5 kiloton nuclear warhead); a pair of RBU-6000 ASW mortars; and a set of torpedo tubes.For self-defense, the "Moskva"s had two twin SA-N-3 SAM launchers with reloads for a total of 48 surface-to-air missiles, along with two twin 57 mm/80 guns.