The contract for repairs and modernization of the submarine was tied between Zvezdochka shipyard and Indian defense ministry on June 4, 2010.
The sub was brought to Severodvinsk by a transport dock ship on Aug 12, 2010.
As a result, INS Sindhurakshak will be armed with Club-S missile system and Ushus sonar. The sub's cooling and ventilation systems will be upgraded; new radio facilities CCS-MK-II, radar Porpoise and other equipment are being installed.
In the coming fall, INS Sindhurakshak will take sea for shipyard's trials and missile flight development tests. The sub will be handed over to the client in 4-th quarter of 2012.