operation trident
Vishakhapatnam to host first navy day outside delhi.
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Navy Day in India is celebrated on 4 December every year to recognize the achievements and role of the Indian Navy to the country. 4 December was chosen as on that day in 1971, during Operation Trident, the Indian Navy sank four Pakistani vessels including PNS Khaibar, killing hundreds of Pakistani Navy personnel.[1][2] On this day, those killed in the Indo-Pakistan War of 1971 are also remembered.