(Indian Navy Operations in the Western theatre during Indo-Pakistani War of 1971)
At then end of conflict.... We [Eastern Naval Command] had no intelligence and hence, were both deaf and blind with the Indian Navy and Indian Air Force pounding us day and night....
—Admiral Mohammad Sharif telling Admiral Zumwalt in 1971,
Naval operations in the Eastern theatre by Indian Navy .. In the end months of 1971, the Indian Navy's Eastern Naval Command had effectively applied a naval blockade which also completely isolated East-Pakistan's Bay of Bengal, trapping the Eastern Pakistan Navy and eight foreign merchant ships in their ports.
On 4 December 1971, the INS Vikrant, the aircraft carrier, was also deployed in which its Hawker Sea Hawk attack aircraft contributed in Air Operations in East Pakistan.
The Pakistan Navy responded by deploying her ageing long-range submarine, PNS Ghazi, to counter the threat as the Naval Command had overruled the objections by her officers.
The PNS Ghazi,was assigned to locate the INS Vikrant, but when it was not able to locate, decided to mine the port of Vishakapatnam .
At around midnight of 3--4 December, the PNS Ghazi began its operation of laying mines. The Indian Navy dispatched INS Rajput to counter the threat.The INS Rajput's SONAR reported the disturbance underwater and two depth charges were released.
The deadly game ended when INS Rajput sunk PNS Ghazi with all 92 hands on board around midnight on 3 December 1971 off the Vishakapatnam coast