Ahmad Tasnim HI(M) SJ & Bar[note 1] SI(M) SBt (Urdu: احمد تسنيم; born 1935) is a retired three-star rank admiral of the Pakistan Navy who is known for his command of Hangor, a submarine that sank INS Khukri on 8 December 1971 during Pakistan's third war with India, off the coast of Diu, Gujarat.

[7] He shared his dormitory with army cadet Imran Ullah Khan who would one day become a three-star general.

[7] During this time, he was posted in East Pakistan, but returned shortly after he was appointed ADC to President Ayub Khan.

[7] In 1964, the crew returned to Pakistan and reported back to its base, Karachi Naval Dockyard.

[7] Ghazi later patrolled the Arabian sea and reported back safely to its base once the Soviet Union broke the India-Pakistan Tashkent Agreement ceasefire.

Tasnim returned to Karachi and later traveled to Paris to acquire a newly built Hangor-class submarine.

Tasnim volunteered to go behind enemy lines to pick up intelligence on an Indian Navy movement, which was duly approved.

[7] In November 1971, Hangor sailed under his command again with a full wartime load of torpedoes, moving towards the Bombay harbour, identifying the Indian armada but not attacking without authorization.

Tasnim broke radio silence and dispatched a message that was immediately identified, leading to the Indian Navy dispatching two ASW warships, INS Khukri and INS Kirpan from the 14th Squadron of the Indian Navy's Western Naval Command.

[10] The Indian squadron under Captain Mahendra Nath Mulla identified Hangor circa 3rd December, and came forward to attack the submarine that was operating in shallow waters.

[10] The crew of Hangor heard a loud explosion and began recording orders being passed by Cpt.

[12] Khukri sank before Hangor could make an attempt to save the survivors, resulting in 250 men (all on board) losing their lives including Cpt.

Tasnim had Hangor submerged because of a massive search and destroy mission, making his way back to her base with depleted hydrogen batteries.

Tasnim went to the United States to attend the Rhode Island Naval War College, returning with a MSc.

Tasnim was selected by the Ministry of Defence (MoD) for a diplomatic assignment, and briefly tenured as military attaché at the Embassy of Pakistan in Paris until 1981.

"[7] In 2016, Admiral Tasnim backed the ISPR's claim of detecting the Indian Navy's submarine patrol off the Karachi coast, claiming that "the Indian submarine was detected 40 nautical miles off Pakistan's coast.