INS Sindhukirti (S61)
 INS Sindhukirti (S61) is the seventh Sindhughosh-class diesel-electric submarine of the Indian Navy. She was built at the Admiralty Shipyard and Sevmash in the Soviet Union.Sindukirti was commissioned on January 4 1990. She has been undergoing a medium refit since June 2006 at the Hindustan Shipyard at Vishakapatnam.