The Pakistan Navy (PN) (, ) is the naval warfare branch of the Pakistan Armed Forces. The Chief of the Naval Staff, a four-star admiral, commands the navy. The Pakistan Navy operates on the coastline of Pakistan in the Arabian Sea and Gulf of Oman. It was established in August 1947 following the independence of Pakistan.

The primary role of the Pakistan Navy is to defend Pakistan's sea frontiers from any external enemy attack. In addition to its war services, the Navy has mobilised its war assets to conduct humanitarian rescue operations at home as well as participating in multinational task forces mandated by the United Nations to prevent seaborne terrorism and piracy off the coasts.

The Pakistan Navy is a volunteer force which has been in conflict with neighbouring India twice on its sea borders. It has been repeatedly deployed in the Indian Ocean to act as a military advisor to Gulf Arab states and other friendly nations during the events of multinational conflict as part of its commitment to the United Nations. The Pakistan Navy has several components including Naval Aviation, Marines, and the Maritime Security Agency (a coast guard).Mills, J.M. (2003). Exploring polar frontiers: a historical encyclopedia. 1 (A–M). Santa Barbara: ABC-CLIO. Since its commencement, the defensive role of the navy has expanded from securing the sealines and becoming the custodian of Pakistan's second strike capability with an ability to launch underwater missile system to target enemy positions.

The Chief of the Naval Staff is nominated by the Prime Minister and appointed by the President of Pakistan. Admiral Naveed Ashraf is the incumbent chief since 7 October 2023.

History Division of the Royal Indian Navy in 1947

The Pakistan Navy came into existence on 15 August 1947 with the establishment of Pakistan as an independent state from the United Kingdom. The Armed Forces Reconstitution Committee (AFRC), under Field Marshal Auchinleck, the last British Commander-in-Chief, India (C-in-C, India), divided the shares and assets of the Royal Indian Navy (RIN) between India and Pakistan in a ratio of 2:1, despite Pakistan having inherited the high percentage of delta areas on its coast and the large maritime area covering the Arabian Sea on the West and the Bay of Bengal on the East. Pakistan received two sloops, two frigates, four minesweepers, two naval trawlers and four harbour launches. In addition, India also objected to transfer any machinery at the Bombay Dockyard to Pakistan and further refused to part the machinery that happened to be on its soil.

The navy endured a difficult beginningof only 200 officers and 3,000 sailors inherited, the most senior was Captain HMS Choudri, who had little experience in military staffing. Of the 200 officers, twenty had come from the executive branch of the Royal Indian Navy,. Only six officers were mechanical engineers. There were no electrical engineers or specialists to care for the electrical systems used for weapons or other machinery. The navy suffered perennial problems with inadequate staff, lack of operational bases, lack of financial support, and poor technological and personnel resources. It was the smallest military branch, and lacked importance in federal budgeting.

Defence plans were based primarily from the point of view of the army and air force. The navy lacked facilities and maintenance machinery, as the only naval dockyard on the subcontinent was located in Bombay in India.

To overcome these difficulties, the navy launched a recruitment programme for the young nation, starting in East Pakistan. Sustaining the programme there proved difficult; therefore, it was moved to concentrate recruitment in West Pakistan. Furthermore, procurement was greatly determined by the navy's role in previous wars. Most functions were in coastal defense and monitoring sea lanes, not in combat, making it difficult to justify spending on major weapons systems.

The beginning: 1947–1964 Reorganisation (1947–1964)

The Navy's combat actions largely remained in absence during the first war with India in 1947–48 as all the fighting was restricted to land and aerial combat missions. On operational planning, Captain HMS Choudri had engaged on commanding a former RIN destroyer from Karachi to Bombay to oversee the evacuation of Indian emigrants to Pakistan. In 1948, the Royal Pakistan Navy had to engage in humanitarian missions to evacuate Indian immigrants trapped in disputed and hostile areas, with its frigates operating continuously.

Command and control of the new Royal Pakistan Navy was extremely difficult as Prime Minister Liaquat Ali Khan's administration had to extend the employment of a large number of the Royal Navy officers from the British Admiralty, with Rear Admiral James Wilfred Jefford, RN, appointed as the Flag Officer Commanding (FOC) who worked on creating the contingency plan, "Short-term Emergency Plan (STEP)", to work up the frigates and naval defences in case of escalation of the war at sea. In 1948, the Directorate-General for the Naval Intelligence (DGNI), a staff corps, was established under Lieutenant S. M. Ahsan, who served as its first Director-General, in Karachi. When the first war came to an end in 1948, the Navy temporarily established its Navy NHQ in Karachi and acquired its first O-class destroyer from the transfer by the Royal Navy.

The Royal Pakistan Navy greatly depended on the generous donations from the British Royal Navy with two s, and . Tippu Sultan was commissioned on 30 September 1949, under Commander P.S. Evans, whilst Tariq was placed under the command of Lieutenant-Commander A. R. Khan. The two destroyers formed the 25th Destroyer Squadron, as PNS Jhelum and PNS Tughril, under Commander Muzaffar Hasan, also joined the Royal Pakistan Navy.

In 1950, the Navy's nationalisation took place when many officers from the air force and army volunteered to join the navy and NCOs gaining commission as an officers. Support from the army and air force to the navy led to the establishment of logistics and maintenance machinery with vigorous efforts directed towards integrating the navy presence in East Pakistan, thereby creating opportunities for people in East Pakistan to participate in the build-up.

In 1951, the Pakistan government called for appointing native chiefs of the armed forces, but it was not until 1953 that a native navy chief was appointed. The British Admiralty, however, maintained the command of the Navy through Rear-Admiral Jefford who had native deputy chiefs of staff including Commodore HMS Choudhri, Commodore Khalid Jamil, and Commander M.A. Alavi.

During this time, a number of goodwill missions were carried out by the navy's warships, and non-combat missions were conducted under the auspices of the Royal Navy. In 1951, HMS Choudhri's promotion papers as naval chief were approved by Prime Minister Liaquat Ali Khan but it was not until 1953 when HMS Choudhri was promoted as vice admiral and commander with the support from army commander-in-chief General Ayub Khan. He handed over the command of 25th Destroyer squadron to a Polish naval officer, Commander .

In the mid-1950s, the Ministry of Finance awarded contracts to the Corps of Engineers (Pakistan Army) for the construction of the Karachi Naval Dockyard. In 1954, several efforts were made to procure a Ch-class submarine from the Royal Navy but was rejected by British Admiralty which agreed to loan the , , which was renamed PNS Taimur. From 1953 to 1956, HMS Choudri bitterly negotiated with the United States over the modernisation of the navy and convinced the U.S. government to provide monetary support for modernisation of ageing O–class destroyers and minesweepers, while commissioning the Ch–class destroyers from the Royal Navy. British naval tradition was disbanded and cancelled when the United States Navy's advisers were dispatched to the Pakistani military in 1955.

With the promulgation of the Constitution of Pakistan that established the republicanism featuring the federalised government, the prefix Royal was dropped, and the service was re-designated the Pakistan Navy ("PN") with the Jack replaced the Queen's colour and the White Ensign respectively in 1956. The order of precedence of the three services changed from Navy–Army–Air force to Army–Navy–Air Force.

In February 1956, the British government announced the transfer of several major surface combat warships to Pakistan Navy, including a cruiser and four destroyers to be purchased with funds made available under the U.S. Military Assistance Program. In 1957, the Navy finalised the purchase of a cruiser from the United Kingdom and used the government's own funds for the purchase which caused a great ire against Admiral Choudhri in the Finance Ministry.

In 1958, the Navy made an unsuccessful attempt to obtain s from Sweden using the American security funds; it was halted by the United States and Pakistan's Finance Ministry despite the fact that the idea had support from Army GHQ. In 1958–59, the Navy NHQ staff began quarrelling with the Army GHQ staff and the Ministry of Defense (MoD) over plans regarding the modernisation of the navy that resulted in bitter interservice rivalry between army and navy and ended with Admiral Choudri's resignation to the Presidency in 1959.

Proposal of attaining the aircraft carrier was deferred due to financial constraints, forcing Pakistan to move towards establishing the formidable submarine command. From 1956 to 1963, two destroyers, eight coastal minesweepers, and an oiler were procured from the United States and United Kingdom as a direct result of Pakistan's participation in the anti-Communist defence pacts SEATO and CENTO.

War with India and subsequent war deployments (1965–1970)

After the bitter resignation of Vice-Admiral HMS Choudri in 1959, Vice-Admiral Afzal Rahman Khan was appointed as the Commander in Chief in Navy who worked towards building relations with President Ayub Khan in retaining hopes for procuring a submarine despite financial constraints. The Royal Navy accepted the long awaiting requests from the Pakistan Navy for a regular visit to Karachi Naval Dockyard to provide first hand experience in submarine operations in 1960–61. The Ayub administration did not increase the financial funding of the navy at the expense to army and air force but he did not object to American contributions to train the Pakistan Navy in submarine operations. It was the U.S. Navy that provided an insightful and crucial training support to Pakistan Navy enabling it to conduct operations in long range in the Indian Ocean and the proposal of procuring the submarine was met with favourable views in 1963 due to the prospect of the Soviet Navy leasing a submarine to the Indian Navy. After seeing the U.S. contribution, the United Kingdom decided to provide training and education to Pakistan Navy on submarine operations, and in 1964, was commissioned from the United States under the Security Assistance Program (SAP).

Even though, neither the Navy nor the Air Force was notified of the Kashmir incursion in 1965, the Navy was well-prepared at the time when the second war broke out between Pakistan and India in 1965. The naval chief Admiral Afzal Rahman Khan ordered all war units of the Pakistan Navy to take up defensive positions off the coast, but did not order any offensive operations in the Bay of Bengal. As the Indian Air Force's repeated sorties and raids disrupted PAF operations, the Navy assumed a more aggressive role in the conflict. On 2 September, the Navy deployed its first long-range submarine, PNS Ghazi under Commander K. R. Niazi which was charged with gathering intelligence on Indian naval movements that stalked the diverting threats posed by the aircraft carrier .