India celebrates Navy Day on December 4 in commemoration of Operation Trident, the attack launched by the Indian Navy on Karachi harbour during 1971’s Indo-Pakistan war. It was for the first time that an anti-ship missile was used in the operation.
The operation was conducted on the night of December 4-5 and it inflicted heavy damage on Pakistani vessels. India did not suffer any loss during the operation.
As part of the operation, the Indian Navy sank four Pakistani vessels and ravaged Karachi harbour fuel fields in Pakistan.