The navy chief said that Russia's modern 'Project 955 Borey' nuclear-powered strategic submarines were not intended to be equipped with Sineva ballistic missiles instead of Bulava.

Under the Russian State Arms Procurement Program for 2007-2015, the navy is expected to receive at least five Project 955 Borey submarines equipped with new Bulava ballistic missiles and two Project 885 Yasen nuclear multipurpose attack submarines.

The RSM-54 Sineva (SS-N-23 Skiff) is a third-generation liquid-propellant submarine-launched ballistic missile (SLBM) that entered service with the Russian Navy in July 2007. It can carry four or 10 nuclear warheads, depending on the modification, and has a maximum range of over 11,500 km.

The Bulava (SS-NX-30) submarine-launched ballistic missile (SLBM) carries up to 10 MIRV warheads and has an estimated range of over 8,000 km.