Baku (later name: Admiral Gorshkov, current name: Vikramaditya) was a Soviet, Russian and is now an Indian light aircraft carrier with classic propulsion. The keel was laid for this unit in 1978, the launch took place in April 1982, and the entry into service took place in 1987. The total length of the ship was 273 meters, and her full displacement was about 44,000 tons. The maximum speed was up to 29 knots. The on-board armament included, among others: 6 twin P-500 Basalt rocket launchers, 24 Kindżał system launchers and 2 100 mm guns. The aircraft carrier could take on board up to 36 aircraft, including, for example, Ka-25 or Ka-27 helicopters or Jak-38 planes.
Baku was the only ship of project 1143.4, which in turn was a modernization and development of the Kiev-type units (Kyiv, project 1143). The unit differed from the Kiev-class ships mainly in other electronic systems, more inclined walls of superstructures, missile weapons or a slight enlargement of the air group being taken. The unit received the Mars-Passat complex, but the work on it clearly dragged on and it probably never achieved full combat capability. In 2004, an agreement was signed between the governments of Russia and India for the sale of the ship and its extensive conversion, making it a classic aircraft carrier. In 2013, the unit was transferred to the Indian Navy, where it is called Vikramaditya.