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Operation Trident

Date: 06 December 2020 Tags: Days & Dates


On December 4, India celebrates Navy Day to recognize the achievements and role of the Indian Navy during 1971 Bangladesh liberation war.



December 4 is celebrated as Navy Day to commemorate the decisive naval action by the Indian Naval ships on Karachi Port.



  • Operation Trident was an offensive operation launched by the Indian Navy on Pakistan's port city of Karachi during the Indo-Pakistani War of 1971.

  • The attack was successful as it sank a minesweeper, a destroyer, and an ammunition supply ship. The Indian Navy planned the attack at night as Pakistan did not have aircraft that could carry out bombings at night.

  • The Indian attack consisted of 3 Vidyut class missile boats, 2 anti-submarines, and a tanker.

  • After the operation, there were no casualties from India, though 5 Pakistani sailors and over 700 men were injured.

  • The Indian Navy's three warships -- INS Nipat, INS Nirghat, and INS Veer -- played an important role in the attack.

  • A strike group under Western Naval Command was formed for this mission. This strike group was to be based around the three Vidyut-class missile boats already deployed off the coast of Okha.

  • INS Nipat perhaps did the biggest damage by taking down the Kemari oil storage tanks with the missile hitting its target.

  • The oil tank was hit causing an acute shortage for Pakistani vessels disabling their economic link and their ability to fight back.

  • India launched Operation Python in order to repel any Pakistani retaliation. India did not suffer any casualties even as Pakistani ships launched an attack and a Pakistani tanker was destroyed.