Kalvari’, the first of the Scorpene class submarines, being built at the Mazagon Dock Shipbuilders Ltd Mumbai (MDL), went to sea for the first time today. The submarine sailed out at about 1000 hrs under her own propulsion for the first sea trial, off the Mumbai coast and during the sortie. A number of number of preliminary tests on the propulsion system, Auxiliary Equipment and Systems, Navigation Aids, Communication Equipment and Steering gear. Various Standard Operating Procedures were also validated for this new class of submarines. The submarine then returned to harbor in the evening.