A Sindhughosh class submarine, INS Sindhuratna has been returned to Mumbai (India) after undergoing a major refit at Naval Dockyard in Russia, after sailing for 97 days.
The ship returned passage through the Norwegian Sea, English Channel, and the Mediterranean Sea. It had gone for an upgrade in Severodvinsk after a major accident in February 2014.
INS Sindhuratna is a Russian Type 877EKM diesel-electric submarine. It is popularly called a NATO-defined Kilo-class sub.
