Kildin turns Project 56 toward anti-ship missiles

In this interpretation, Soviet project numbers identify related design teams and philosophies, with room for the ships to evolve. A shared number does not establish that every hull and installation is identical. Kildin develops the Project 56 family toward guided anti-ship strike, while the earlier Kotlin missile adaptation emphasizes air defense. Anti-ship missiles take over much of the torpedo's surface-attack role. The ships nevertheless retain torpedo tubes, allowing their underwater armament to develop alongside the missile battery.