HMS Campania was a British passenger ship, rebuilt into a tender and an aircraft carrier ("aircraft carrier"), the keel of which was laid in 1892, was launched in September 1892 and seized by the Royal Navy in November 1914. The total length of the vessel at the time of launching was 189.6 m, width 19.8 m, with a displacement of 20,900 tons. In turn, the maximum speed was up to 36 knots. In 1915, the ship's armament included, among others: 6 120 mm guns and a single 76 mm anti-aircraft gun. The unit was also able to carry out flight operations with the use of 10-12 aircraft.
HMS Campania, or rather RMS Campania, was built at the Goran shipyard in Scotland as a liner for passenger navigation on the Liverpool-New York line. In 1914, due to considerable wear and tear, the unit was scrapped, but in the same year the Royal Navy became interested in the unit, which bought it and in a few months it was rebuilt, adapting it to the role of a tender and an airship. The modernization consisted not only in the addition of artillery weapons, but also the installation of cranes and a relatively short flight deck from which planes could take off. HMS Campania was in 1915 very intensively used in the Royal Navy for various types of tests and experiments in the field of maritime aviation, and the first take-off of the ship-based aircraft took place in August of the same year. The unit in the period 1916-1918 participated in numerous patrols in the home waters, but did not take part in the Battle of Jutland. The vessel sank in a fatal squall at Hirth of Forth on November 5, 1918.