The 46th Indian Navy Day was celebrated on 4 December 2017. The day is observed every year to celebrate the achievements and role of the naval force in the country. On this day in 1971, the Indian Navy carried out Operation Trident, which was a devastating attack on Pakistan’s Naval Headquarters of Karachi. The attack irreparably damaged destroyers and oil storage tanks at the Karachi port and sank Pakistan Naval Ships, PNS Ghazi.