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

[2][3] INS Nirghat was a part of the 25th "Killer" Missile Squadron of the Indian Navy.

Late that evening, around 70 mi (110 km) south of Karachi, Nirghat detected a large Pakistan Navy target, later identified as the destroyer PNS Khaibar, about 45 mi (72 km) to her northwest.

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

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