PNS Ghazi (previously USS Diablo (SS-479); reporting name: Ghazi) was a Tench-class diesel-electric submarine and the first ever attack submarine of Pakistan Navy (PN), leased from United States in 1963. She saw action in the 1965 and 1971 wars between India and Pakistan. The submarine could be armed with up to 28 torpedoes and, in later years, was re-fitted in Turkey for mine-laying capability. Starting from being the only submarine in the war theater in 1965, it remained the Pakistan Navy's flagship submarine until she sank near the eastern coast of India during the 1971 Indo-Pakistani War en route to the Bay of Bengal under mysterious circumstances. The Indian Navy credits Ghazi's sinking to the destroyer INS Rajput; however, Pakistan's official sources state that "the submarine sank du