Three Russian nuclear-powered submarines will return to operations in 2013 following periods of maintenance, the Ministry of Defence (MoD) has announced.
Following post-maintenance sea trials to test "technical readiness", the Oscar II-class Project 949B Antey guided missile submarine (SSGN) Smolensk (K-410) will return to operations from the Northern Fleet's Litsa South submarine base.
A second Oscar II, Tomsk (K-150), will return to service in the Pacific Fleet following maintenance in far eastern shipyards. RIA Novosti reported that Tomsk had been undergoing maintenance since 2010 after the discovery of reactor cooling problems.
Six Oscar II boats remain in service. The first-of-class boat Voronezh (K-119) began refit at the Zvezdochka shipyard in Severodvinsk in 2010, a refit which was due to be completed in 2012.