INS Nirghat (K89)

INS Nirghat (K89) was a Vidyut class missile boat of the Indian Navy.

INS Nirghat was a part of the 25th "Killer" Missile Squadron of the Indian Navy.

Operation Trident
During the Indo-Pakistani War of 1971, INS Nirghat was part of the Operation Trident strike force, along with its sister vessels from the 25th Killer squadron (INS Veer (K82) and INS Nipat (K86)). On the afternoon of December 4, the strike group made its way towards Karachi. Late that evening, around 70 miles south of Karachi, the Nirghat detected a large Pakistan Navy target, later identified as the destroyer PNS Khaibar, about 45 miles to its northwest. Nirghat launched 2 missiles on PNS Khaibar, sinking it.

Other vessels of strike group sank a Pakistan Navy minesweeper PNS Muhafiz and the merchant ship MV Venus Challenger.

Lieutenant Commander Inderjit Sharma, the Commanding Officer, and Master Chief M.N. Sangal of the Nirghat were awarded the Vir Chakra for their roles during the operation.