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Detailed explanation-1: -Deep Submergence Rescue Vehicle (DSRV) Complex was inaugurated at Eastern Naval Command (ENC) in Visakhapatnam, Andhra Pradesh.

Detailed explanation-2: -Detailed Solution. The correct answer is INS Kalvari. INS Kalvari is the first Scorpene class submarine in India.

Detailed explanation-3: -National Museum of the U.S. Navy The primary mission of the vehicle was for quick deployment on a mother vessel to assist a distressed submarine. The DSRV would then be able to attach to the submarine’s hatch and embark up to 24 persons from depths of 3, 500 feet to the mother vessel.

Detailed explanation-4: -India got its first submarine, INS Kalvari of the Foxtrot Class, from the USSR in December 1967. By 1969, it had four of those. During the 1971 war with Pakistan, the submarines were baptised into war. Between 1971-74, India bought four more Foxtrot Class submarines.

Detailed explanation-5: -The sixth and last of the Scorpene class submarines, Vagsheer, being built by the Mazgaon Dock Shipbuilders Limited (MDL), was launched into water in April 2022 and is expected to be delivered to the Navy by the end of 2023.