United States Navy that the Karachi Naval Dockyard was built and constructed for wartime operations. Besides the Naval Base Karachi, the PNS Dhaka in East Pakistan was the only naval base for the Pakistan Navy, dedicated for coastal operations only After the Indian Navy's missile attacks in Karachi in 1971, the Navy concentrated on building and moving its operational assets in Balochistan, Punjab, and the Khyber-Pakhtunkhwa. These naval bases are operationalised for various purposes including the logistics and maintenance support, armoury and ammunition support, air stations, military hospitals, SEALs teams, coastal and missile defences, missile boats and submarine bases, forward operating bases etc. The PNS Zafar serves as the major logistics naval base for the Pakistani military's operational capability in the western and northern Pakistan, followed by the naval forward operating base constructed at the vicinity of the Naval War College in Lahore. The primary naval air station, where the Mirage 5 are stationed, is the Naval Air Station Mehran (PNS Mehran), followed by the establishment of the naval air stations in Makran, Ormara, Turbat and the Manora Island. In 2017, the PNS Siddiq was commissioned to support the aerial missions for the Navy's Naval Aviation reconnaissance group to guard the safety of the CPEC. The PNS Hameed, commissioned in 2017, is an ELF and a VLF facility near the Karachi coast, while the Karachi-based PNS Iqbal and the PNS Qasim serves for the operational activities dedicated for the Navy Special Service Group and the Marines Corps. The Jinnah Naval Base and the Kalmat Naval Base are dedicated towards maintaining and harbouring the country's strategic assets such as the nuclear-capable submarines. Besides deployment within Pakistan, the Pakistan Navy, along with the inter-services branches, are permanently based in different parts in the Saudi Arabia and the United Arab Emirates. Medical care The Navy operates four hospitals: PNS Shifa Hospital, Karachi (600 beds) PNS Hafeez Hospital, Islamabad (197 beds) PNS Rahat Hospital, Karachi (200 beds) PNS Darmaan Jah Hospital, Ormara (100 beds) Personnel Commissioned officers From its commencement in August 1947, the Pakistan Navy had traditionally followed the ranks and insignia of the Royal Navy but disbanded in favour of adopting the officer ranks system of the United States Navy as early as the 1950s. Unlike the army or air force where there are several paths to become the officers, there is only one way of becoming the naval officer by must