Russian-origin submarines fitted with Switzerland, French and German auxiliary power are in maintenance jeopardy as Russia is unable to source spare parts
File photo: INS Sindhurakshak which sank in the Mumbai Naval dockyard on Aug 14, 2013. As news came in that all 18 sailers aboard the Indian Navy's Kilo Class submarine INS Sindhurakshak may be died after a massive explosion rocked the vessel.