The "Kirov" class's main weapons are 20 P-700 Granit (SS-N-19 Shipwreck) missiles mounted in deck, designed to engage large surface targets. Air defense is provided by twelve octuple S-300F launchers with 96 missiles and a pair of Osa-MA batteries with 20 missiles each. "Pyotr Velikiy" carries some S-300FM missiles and is the only ship in the Russian Navy capable of ballistic missile defence. The ships had some differences in sensor and weapons suites: "Kirov" came with SS-N-14 anti-submarine warfare (ASW) missiles, while on subsequent ships these were replaced with 3K95 Kinzhal (Russian: Кинжал – dagger) surface-to-air missile (SAM) systems. The Kinzhal installation is in fact mounted further forward of the old SS-N-14 mounting, in the structure directly behind the blast shield for the bow mounted RBU ASW rocket launcher. "Kirov" and "Frunze" had eight AK-630 close-in weapon systems, which were supplanted with the Kortik air-defence system on later ships.