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With the new START treaty negotiations moving forward - the treaty will be discussed during Hillary Clinton's visit to Moscow that begins today - the opposition to the treaty is also shaping up. A couple of weeks ago the Senate...

The laying down of the keel of fourth submarine of the Project 955 class, Svyatitel Nikolay, has been postponed again, this time quietly. Initially, the construction was supposed to begin in December 2009, but after another failure of the Bulava...

The K-407 Novomoskovsk submarine of the Project 667BDRM class, which is undergoing overhaul at the Zvezdochka plant, has been moved out of dry dock on December 13, 2010. The submarine, which began overhaul in November 2008, is now expected to...

Any idea what these "overhauls" entail? Will these submarines return to fleet duty armed with “Sineva” rebuilt SS-N-18 Stingray missile?

Frank Shuler
USA

Frank. diferences between a "SS-N-23" and Sinevar are just electronics. NO big changes needed.

Kolokol

Sorry for my constant confusion between Delta III and IV classes. So, the major overhaul for the K-18 Karelia involved more “combat systems” than weapons or nuclear refueling. Thanks.

Frank Shuler
USA

Submarine overhauls employs several modifications. It's not exclusively weapons related as some people may believe.
Overhauling periods are normally placed at great time intervals and ussually their main reason is dealing with hull structure, propulsion, targeting, communications etc. systems. Ballast and trim tanks are also a main target for overhauling as well as sonar systems (both cylindrical, conformal and towed). But yes, weapons and weapons systems are included too obviously.
So in short, an overhauling schedule deals with either hull and critical operating systems or with weapons upgrading or both at once.