Chief of Naval Staff of the Navy. In 1973, the Navy NHQ was permanently moved to Islamabad to provide synergy with the Army GHQ in Rawalpindi. In 1974, the Naval Aviation branch was established with the transfer of the Westland Sea King helicopters from the United Kingdom in 1975, followed by test firing the surface-to-ship Exocet missile as a befitting response to the Indian Navy in 1979. With the ability to fire the land-based Exocet missile from a reconnaissance aircraft, the Navy became the first of its kind in the South Asia to acquire land-based ballistics missile capable long range reconnaissance aircraft. In 1976, the Navy moved towards successfully acquiring the military computers from the British firm, the Ferranti, to increase its defences for its coastlines. The War Enquiry Commission noted the lack of strategic communication and the grand strategy between the four-branches of the military during the conflict and wars with India, recommending the establishment of the Joint Chiefs of Staff Committee to maintain strategic military communication between the inter-services and the federal government, that is to be chaired by the appointed Chairman joint chiefs as the government's principal military adviser. In 1976, Navy saw its first four-star rank admiral when Mohammad Shariff was promoted to this rank, and later becoming the first admiral to be appointed as the Chairman of Joint Chiefs Committee in 1977. In 1977, the United States reportedly transferred the two refitted to the Pakistan Navy, which were much superior to the British frigates, followed by obtaining more destroyers from the U.S. Navy in 1982–83. During this time, the Navy to diversify its procurement with defence deals made with China, France, and the United Kingdom but the dependence grew on China when the Navy acquired the anti-submarine warships that gave the Navy credible sea-denial capability. In 1979, the France offered to sell their Agosta-70A-class submarine and was immediately acquired which were commissioned as and . Induction of the Agosta-70A class gave Pakistan Navy a depth advantage over the Indian Navy, and gave the Navy an ability to conduct operations in deeper Indian Ocean at wider range. In 1982, the Reagan administration submitted the proposal of US$3.2 billion aid for Pakistan that was aimed towards economic uplift and security assistance to the United States Congress as the Navy entered in successful negotiation of obtaining the Harpoon system, despite the strong Indian lobby opposing and objecting of