The attack also irreparably damaged another destroyer and oil storage tanks at the Karachi port.[49] To commemorate this, 4 December is celebrated as the Navy Day.[50] This was followed by Operation Python on 8 December 1971, further deprecating the Pakistan Navy's capabilities.[49] Indian frigate INS Khukri, commanded by Captain M. N. Mulla was sunk by PNS Hangor, while INS Kirpan was damaged on the west coast.[51] In the Bay of Bengal, the aircraft carrier INS Vikrant was deployed to successfully enforce the naval blockade on East Pakistan.