ATTACK ON KARACHI HARBOUR BY INDIAN NAVY 4TH OF DEC 1971
NAVY DAY COMMEMORATES THE DARING ATTACK ON KARACHI HARBOUR BY THREE VIDYUT CLASS MISSILE BOATS OF WESTERN NAVAL COMMAND ON 04 DECEMBER 1971". EXTRACTS FROM WIKIPEDIA:
A strike Group of the three Vidyut-class missile boats: INS Nipat, INS Nirghat and INS Veer, each armed with four Soviet made SS-N-2B Styx surface-to-surface missiles with a range