Aircraft carriers are warships that evolved from balloon-carrying wooden vessels into nuclear-powered vessels carrying scores of fixed and rotary-win aircraft. Since their introduction they have allowed naval forces to project air power great distances without having to depend on local bases for staging aircraft operations.
Balloon carriers were the first ships to deploy manned aircraft, used during the 19th and early 20th century, mainly for observation purposes. The advent of fixed-wing aircraft in 1902 was followed in 1910 by the first fight from the deck of a US Navy cruiser. Seaplanes and seaplane tender support ships, such as HMS Engadine, followed. The development of flat top vessels produced the first large fleet ships. This evolution was well underway by the early to mid-1920s, resulting in the commissioning of ships such as Hosho (1922), HMS Hermes (1924). Beam (1927), and the Lexington-class aircraft carriers (1927).
Most early aircraft carriers were conversions of ships that were laid down (or had even served) as different ship types: cargo ships, cruisers, battlecruisers, or battleships. During the 1920s, several navies started ordering and building aircraft carriers that were specifically designed as such. This allowed the design to be specialized to their future role and resulted in superior ships. During the Second World War, these ships would become the backbone of the carrier forces of the Us, British, and Japanese navies, known as fleet carriers.
World War II saw the first large-scale use of aircraft carriers and induced further refinement of their launch and recovery cycle leading to several design variants. The USA built small escort carriers, such as the USS Bogue, as a stop-gap measure to provide air support for convoys and amphibious invasions. Subsequent light aircraft carriers, such as USS Independence, represented a large, more “militarized” version of the escort carrier concept. Although the light carriers usually carried the same size air groups as escort carriers, they had the advantage of higher speed as they had been converted from cruisers under construction.
The earlies recorded instance of using a ship for airborne operations occurred in 1806, when Lord Cochrane of the Royal Navy launched kites from the 32-gun frigate HMS Pallas in order to drop propaganda leaflets. The proclamations against Napoleon Bonaparte, written in French, were attached to kites, and the kite strings were set alight; when the strings had burned through, the leaflets landed on French soil.
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