Indian Naval Ship Nireekshak a Diving Support and Rescue Vessel (DSRV) was commissioned into the Indian Navy on 15 September 1995. The ship was built by Ms Mazagaon Dock Limited for ONGC, to be operated by the Indian Navy. It was acquired on lease and was commissioned on 08 June 1989. In March 1995, the purchase option was invoked and the vessel was subsequently commissioned as a full-fledged Indian naval vessel. The ship has a displacement of 2,160 tonnes, a length of 70 metres and beam of 17.5 metres. The ship is manned by 15 officers and 110 sailors and is equipped with a number of state-of-the-art diving systems and Dynamic Positioning System which enables the ship to undertake saturation dives, rescue of submariners from submerged submarine and deep salvage operations. The ship has also been used extensively for salvage operations, #HADR and submarine rescue training. The ship holds the national record of deepest dive conducted at a depth of 257 metres (843 ft). The meaning of the name ‘Nireekshak’ is one who inspects or surveys, signifying its role as a diving support vessel. The crest design depicts a vintage diving helmet placed over a dolphin signifying diving assistance in aid of a stricken submarine against Blue and White ocean waves.