Aircraft Carrier

█ JUDSON KNIGHT

Sometimes characterized as "floating cities," aircraft carriers are a potent symbol of America's strength as a superpower. Although nations ranging from the United Kingdom and Russia to Peru and Thailand have their light carrier and helicopter carriers, the large carriers of the United States are without parallel in ability and firepower. Carriers provide an important means of force projection from the continental United States to any theatre, no matter how hostile, and offer a floating platform for missions that include both combat and intelligence-gathering. As President William J. Clinton said during a visit to the carrier Theodore Roosevelt in the 1990s, "When word of crisis breaks out in Washington, it's no accident that the first question that comes to everyone's lips is, 'where is the nearest carrier?'"

Components in the Carrier Concept

The carrier is one of the leading means for force projection, or the ability to project an aggregation of military personnel from the continental United States (or another theatre) in response to military requirements. As long as it operates in international waters, a carrier needs no permission to conduct landings or overflights. These floating military bases constitute sovereign U.S. territory capable of moving over the oceans—70% of Earth's surface—in the service of U.S. interests.

Carriers make possible a variety of options. They may be used to insert forces ashore; on the other hand, their presence is so intimidating that they may be used simply to "show the flag," or remind hostile powers of the U.S. presence. They are capable of attacking airborne, sea borne, or land targets, and engage in sustained operations in support of other forces—for example, the ground forces deployed for Operation Iraqi Freedom in 2003.

Battle groups and air wings. National command authorities do not deploy carriers alone. Rather, the carrier is the center of a battle group, a force of a half-dozen or more ships. The carrier battle group, or CVBG, may be used to protect merchant or military shipping; to provide protection to a Marine amphibious source en route to, or arriving in, an objective area; or to establish a naval presence in support of national security interests

Members of a battle group may include at least one destroyer and one frigate, two attack submarines, two guided missile cruisers, one guided missile destroyer, and a logistical support ship. Destroyers and frigates are primarily for anti-submarine warfare, while attack submarines, as their name implies, attack both enemy submarines and ships. Both guided missile cruisers and destroyers are multi-mission surface combatants, the first type armed with Tomahawk cruise missiles for long-range strike capability, and the second equipped for anti-aircraft warfare. The logistical support ship is usually a combined ammunition, oiler, and supply vessel.

Additionally, the carrier—by definition—serves as a home base for a number of aircraft, known as the carrier air wing. These typically include three squadrons of F/A-18 Hornets, which are all-weather fighter and attack aircraft, and one squadron of F-14 Tomcats, made for fleet air defense and precision strikes against ground targets. Along with these are one squadron of S-3B Vikings, the primary overhead/mission tanker, which is equipped for day and

night surveillance, electronic countermeasures, command/control/communications warfare, and search and rescue; one squadron of EA-6B Prowlers, which jams enemy radar, electronic data links, and communications; one squadron of E-2C Hawkeyes, all-weather tactical warning and control system aircraft; and one squadron of SH-60 Seahawks, twin-engine utility or assault helicopters.

Overview of a Modern Carrier

U.S. aircraft carriers fall into several groupings, the largest of which is the Nimitz class. Largest warships in the world, these measure 1,092 feet (332.9 m) from bow to stern, and 252 feet (76.8 m) across. As large as it is, the large U.S. carrier still does not provide enough room for takeoff and landing by conventional means; therefore, the carrier deck includes a number of items for these purposes, as well as for the storage of aircraft below decks.

The aircraft do not remain on the carrier's deck when not in use; rather, they rest in a cavernous hangar beneath the deck, to which they can be summoned by means of four deck-edge elevators, each of which is capable of moving two aircraft at a time. For taking off, aircraft are attached to catapults, which give them the necessary acceleration to go from a standing position to 165 miles per hour (265.5 kph) in just two seconds. The flight crew of the Nimitz-class aircraft carrier is capable of launching two aircraft and landing one every 37 seconds in daylight, or one per minute at night.

The flight crew itself is a choreographed team, or rather a group of teams, each distinguished by jackets of different colors that signify functions. To the pilot in the air, the most critical colors on the deck are the amber and red lights of the Fresnel lenses on deck. Depending on the angle of the light, the pilot knows if he is too low or too high, while red flashing lights automatically signal a wave-off, meaning that the pilot cannot land at that time. When landing, a plane catches an arresting cable using its tailhook, a hook bolted to an 8-foot (2.4 m) bar attached to the rear part of the aircraft. The tailhook can bring a plane from a speed of 150 miles an hour (241.4 klph) to a complete stop within just 320 feet (97.5 m).

Primary Flight Control, or "Pri-Fly," is the control tower for flights. Above it on the "island," the part of the carrier that sticks up above the flight deck, is the bridge, the command and control center of the carrier as a whole. On the bridge is always an officer of the deck (OOD), designated by the ship's commanding officer, who serves a four-hour watch. The OOD is responsible for all facets of the safety and operation of the ship, among which are navigation, ship handling, communications, and routine tests, and inspections. Also on the bridge are the helmsman, who steers the ship, and numerous other personnel.

Powered by two nuclear reactors with four geared steam turbines and four shafts, the Nimitz-class carrier is capable of spending at least half a year at sea, and more than a decade without refueling. Its ship's company exceeds 3,000, with almost 2,500 more on the air wing. Below decks is an entire city, complete with vast warrens of living spaces, dining halls that serve nearly 20,000 meals a day, a radio and television station, a barber shop, a library, gymnasium, a hospital and dentist office, shops, and a post office.

Evolution of the Carrier

At 11:01 a.m. on January 18, 1911, the U.S. Navy's Eugene Ely landed a Curtiss pusher aircraft on a specially built platform aboard the USS Pennsylvania. Thus, was born the concept of the aircraft carrier. On March 20, 1922, the Navy commissioned the Langley, its first carrier, built from a converted collier called the Jupiter. Later that year, as a result of the 1922 Washington Naval Limitation Treaty, which limited battleship inventories, Congress authorized the conversion of the unfinished battleships Lexington and Saratoga. In June 1934, the Ranger, the first ship built as an aircraft carrier, was commissioned.

During the interwar period, the aircraft carrier benefited from a number of innovations, most of them British in origin. For example, the Royal Navy introduced the idea of arresting wire (originally necessary because the flimsy World War I-era planes might blow overboard), as well as elevator lifts for stowing craft. Later innovations in catapults and landing lights would also come from the United Kingdom. The British and Americans were not the only forces building aircraft carriers; like the Americans, the Japanese, who had signed the Washington naval agreement, converted unfinished battleships to carriers.

Carriers figured heavily in World War II, particularly during operations in the Pacific theatre. The Japanese launched their attack on U.S. forces at Pearl Harbor in December, 1941, from carriers, and in May, 1942, the United States struck back decisively in the Battle of the Coral Sea, the first naval battle in which opposing fleets fought without their ships coming in sight of one another. A month later, the Battle of Midway proved one of the turning points in the war, and reinforced the concept of naval air support.

Postwar changes. By the end of World War II, the United States had commissioned more than 34 carriers, with several more made operational late in 1945. But it had also lost several such vessels, including the first two, the Langley and the Lexington. Following the war, the introduction of guided missiles revolutionized the nature of the carrier battle group, while nuclear fission replaced diesel power for the most advanced carriers.

Several British innovations—the angled landing strip, which made it possible for a jet to land far from parked aircraft, as well as the mirrored landing site and steam catapults—made it possible to build carriers capable of launching powerful aircraft and managing complex air missions. But as the Cold War progressed, it became clear that only extraordinary carriers could support the vessels' emerging threefold purpose: to deliver air strikes against targets on sea and land; to protect other ships at long range; and to support antisubmarine operations through their battle groups. Only a true world power could afford to build carriers big enough to perform all three tasks—a distinction that, in effect, separated the United States from the rest of the world.

With the launch of its 59th carrier, Forrestal, in 1959, the United States introduced the era of the very large carrier. The Forrestal included rectangular extensions on the rear part of the flight deck, which greatly expanded the deck area. Designers had also moved the elevators off to the side, so that they could be used even as aircraft were taking off and landing.

Two years later, in 1961, the Navy introduced the first nuclear-powered carrier, the Enterprise. It is no accident that the world's most well-known fictional spaceship, from the 1960s television show Star Trek, was also called the Enterprise. During that era, the standard of excellence among carriers—the epitomy of technological superiority anyone was likely to encounter in real life—was the Enterprise, which carried 100 aircraft, displaced 75,700 tons (68,674 tonnes), and moved at speeds higher than 30 knots (55.6 kph). With eight nuclear reactors, it could travel for three years before being replaced.

As impressive as it was, the Enterprise would be eclipsed by the Nimitz (commissioned in May 1975) and the rest of its class. Instead of eight reactors, these required only two, whose uranium cores needed to be replaced once every 13 years. The carriers displaced 81,600 tons, but had much smaller propulsion systems, and thus, could store much more aircraft fuel.

As of 2003, the United States had launched a total of 75 carriers, with two more under construction. Its 12 active carriers included the Enterprise and the Kitty Hawk class (the Kitty Hawk and Constellation ), all launched in 1961; the John F. Kennedy, launched in 1968; and eight carriers of the Nimitz class: Nimitz, Dwight D. Eisenhower (1977), Carl Vinson (1982), Theodore Roosevelt (1986), Abraham Lincoln (1989), George Washington (1992), John C. Stennis (1995), and Harry S. Truman (1998). Additionally, the Ronald Reagan was under construction, with launch planned for the middle of the decade, while construction was to begin on the George H. W. Bush, with completion planned for 2009. (Both are Nimitz-class carriers.)

Other nations and light carriers. The United States has decommissioned about as many carriers—63—as the rest of the world had afloat in 2003. Nations with carriers included the United Kingdom, France, Russia, China, Italy, Japan, Spain, India, Brazil, Chile, Peru, China, and Thailand. The leading carrier power, other than the United States, was—not surprisingly, given the many previous British achievements in carrier design—the United Kingdom. In part to facilitate the building of smaller and more economical carriers, the British in the late 1960s developed the Harrier jet, which takes off almost vertically. As of 2003, its fleet included three small carriers of the Invincible class, built for vertical/short takeoff and landing (V/STOL), each capable of carrying eight Harriers and from 10 to 12 helicopters.

France built the Charles de Gaulle, a nuclear-powered vessel that could carry 40 planes, as well as the Jeanne d'Arc helicopter carrier. The latter type of ship, midway of a carrier and a cruiser, provided a means of giving several nations carrier capabilities. Such was the case with the Russian Federation, which had a large helicopter carrier, the Gorshkov, along with a semi-active multi-role carrier, the Kutznetsov. As the Soviet Union, Russia was slow to develop carriers, in part because it lacked sufficient ports worldwide. By the late 1960s, however, the Soviets had begun to build aviation cruisers of the Moskva class. These have all been decommissioned since then, however. The world's other superpower, China, has a small naval carrier force, consisting primarily of the Shichang multi-role support ship.

Other notable naval powers include Italy, which had six carriers, helicopter carriers, or amphibious assault ships either in operation or under construction in 2003. These included the Andrea Doria, scheduled for completion in 2007. Built along the V/STOL model, the Andrea Doria would hold eight Harriers or 12 helicopters. Other navies with aircraft carriers, helicopter carriers, helicopter destroyers, or amphibious assault ships included Japan, Brazil, India, Spain, Thailand, and Peru.

█ FURTHER READING:

BOOKS:

Clancy, Tom. Carrier: A Guided Tour of an Aircraft Carrier. New York: Berkley Books, 1999.

Kaufman, Yogi. City at Sea. Annapolis, MD: Naval Institute Press, 1995.

Musciano, Walter A. Warbirds of the Sea: A History of Aircraft Carriers and Carrier-Based Aircraft. Atglen, PA: Schiffer Publishing, 1994.

Polmar, Norman. The Naval Institute Guide to the Ships and Aircraft of the U.S. Fleet. Annapolis, MD: Naval Institute Press, 1993.

Preston, Anthony. Carriers. New York: Gallery Books, 1993.

Wooldridge, E. T. Carrier Warfare in the Pacific: An Oral History Collection. Washington, D.C.: Smithsonian Institution Press, 1993.

ELECTRONIC:

Haze Gray and Underway World Aircraft Carrier Lists. <http://www.hazegray.org/navhist/carriers/> (April 13,2003).

U.S. Navy—The Aircraft Carriers. U.S. Navy Office of Information. <http://www.chinfo.navy.mil/navpalib/ships/carriers/> (April 13, 2003).

SEE ALSO

Aviation Intelligence, History
E-2C
Libya, U.S. Attack (1986)
National Command Authority
Persian Gulf War
World War I
World War II

Aircraft Carriers. Invented by the British during World War I, the aircraft carrier was adopted by the United States and Japan as an experimental weapon to augment the battle line. In contrast to the Japanese, whose fleet and carriers were designed for defensive operations in the western Pacific, the U.S. Navy planned for an offensive, transpacific war all the way to Japan and created the long‐legged “fast” (33‐knot) carrier to operate over those great distances. The navy first converted a collier (coaling ship) into the 11,050‐ton carrier Langley (CV‐1 “V” being the symbol for heavier‐than‐air craft), commissioned in 1922. Then it converted two battle‐cruiser hulls, as allowed by the Washington Naval Arms Limitation Treaty, into 36,000‐ton fast carriers of the Lexington class. While the 542‐foot Langley experimented with fighter and scout planes in fleet maneuvers during the 1920s, the navy developed dive‐bombers and torpedo planes for the new 888‐foot‐long carriers. As soon as the Lexington and the Saratoga joined the fleet, Adm. Joseph Mason Reeves placed squadrons of all four plane types aboard them, a total of eighty planes per carrier. With the Saratoga, he launched a successful surprise mock attack on the Panama Canal during Fleet Problem IX in 1929. This demonstration of offensive carrier air power established the foundation of U.S. carrier aviation for the rest of the century.

During the war games of the 1930s, similar aggressive attacks struck the Hawaiian Islands, including Pearl Harbor; West Coast seaports; and defending fleets and land‐based air forces. Traditional battleship admirals often minimized these achievements and argued for using the carriers with the battle line, but this only inhibited their mobility and made them vulnerable to air, ship, and submarine attacks. The Lexington‐class carriers mounted a defensive battery of eight 8‐inch and twelve 5‐inch guns. In fact, their own fighter planes and escorting gunships provided the surest defense. So newer carriers, built from the keel up as carriers, mounted only eight 5‐inch guns. Flight decks were made of wood so that bombs would not explode until they struck the hangar deck, enabling planes to keep operating during battle.

The stunning Japanese attack on Pearl Harbor by planes from six Japanese carriers on 7 December 1941 proved decisively the offensive power of fast carriers. It was, however, uncharacteristic of Japanese warships to operate so far from home waters. Adm. Ernest J. King, commander in chief of the U.S. Fleet, therefore instituted wide‐ranging offensive hit‐and‐run raids with the six available carriers to keep the Japanese off balance. Their most aggressive leader was Adm. William F. Halsey, who even launched James Doolittle's army bombers from the Hornet to strike Tokyo in April 1942. U.S. carriers won naval victories at the Battle of the Coral Sea in May, the Battle of Midway in June, and the battles around Guadalcanal between August and November, sinking several Japanese carriers—four at Midway alone. But one by one all U.S. carriers were sunk except for the Saratoga and the Enterprise, and even these two were heavily damaged. The reasons included imperfect tactics and damage control, inferior aircraft, inadequate numbers of fighter planes, ships, and antiaircraft guns, and insufficient reconnaissance.

These lessons were applied to the construction of two dozen new fast carriers of the Essex class, which entered the fleet in 1943. At 27,100 tons, the 872‐foot Essexes each embarked an air group of three squadrons: thirty‐six fighters, the superior F6F Hellcat; thirty‐six dive‐bombers, first the SBD Dauntless and later the SB2C Helldiver; and eighteen torpedo bombers, the TBF/TBM Avenger. All three types performed scouting functions too, but the greatest innovation for detecting enemy planes was the installation of shipboard search radar, enabling fighter director officers to coordinate their fighters out to 100 miles from the carrier. In addition, antiaircraft defenses included twelve 5‐inch/.38‐caliber guns and numerous 40mm and 20mm batteries on each carrier. Nine 11,000‐ton light carriers (CVL) of the 31‐knot Independence class, converted from cruiser hulls between 1941 and 1943, added additional offensive punch; each operated twenty‐four fighters and nine torpedo bombers. Circular screens of new escorting fast battleships, cruisers, and destroyers, all bristling with antiaircraft guns, surrounded the carriers in each tactical formation.

Organized in the Fast Carrier Task Force of some fifteen carriers and 1,000 planes, these carriers provided the overwhelming firepower that spearheaded the Central Pacific offensive of 1943–45. Their optimum effectiveness occurred under the sagacious leadership of Adm. Marc A. Mitscher as the fast carriers overcame virtually all enemy opposition. The only major changes were the introduction of four‐plane night fighter teams aboard each Essex, three carriers equipped primarily for night operations, and an increase of fighters, including the F4U Corsair, over bombing planes to counter the kamikazes, Japanese suicide planes. Only one of the new fast carriers was sunk, the light carrier Princeton, off Leyte.

In the Atlantic, to defeat Germany's U‐boats, the navy depended on small, slow 18‐knot escort carriers (CVE), eighty‐four of which were commissioned. There were four major classes of CVEs, some converted from oilers but most mass‐produced; they varied in size between 7,800 and 11,400 tons, and each carried a composite air group of nine fighters and twelve torpedo bombers. Operating primarily as an independent hunter‐killer group, each escort carrier worked in concert with its five destroyers and destroyer escorts to track down and sink most of the U‐boats destroyed between 1943 and 1945. Many of them also operated in the Pacific, where fighters outnumbered torpedo bombers in providing close air support during amphibious assaults. Light construction made the escort carriers especially vulnerable, and several were sunk by bombs, gunfire, submarine torpedoes, or kamikazes.

Three large (CVB) 45,000‐ton, Midway‐class carriers, commissioned after the war ended, featured armored flight decks in order to nullify bomb hits. Each had a 986‐foot flight deck and a 137‐plane air group of fighters and dive‐bombers. The future of the carrier and its vulnerability to nuclear weapons became a cause of bitter controversy in the late 1940s, a controversy complicated by interservice rivalry. The navy depended upon the older Essexes in the Korean War (1950–53). Their air groups were comprised of F4U fighter bombers, F9F jet fighters, and piston‐engine AD (later A‐1) Skyraider attack planes. Atomic bombs were first deployed aboard carriers in the early 1950s.

The Korean War and the menace of the Soviet Union served to stimulate new carrier construction. During the 1950s and 1960s eight attack carriers (CVA, later CV again) belonging to the Forrestal and Kitty Hawk/America classes were built. Each displaced 56,000 to 61,000 tons and had 1,046‐foot flight decks to accommodate new and heavier planes. Air groups (later air wings) were comprised of up to 100 fighters and attack planes, mostly jets. The major fighters were F‐8 Crusaders and F‐4 Phantoms IIs, the bombers A‐1s, A‐3 Skywarriors, A‐4 Skyhawks, A‐6 Intruders, and A‐7 Corsair IIs. Cruising endurance was greatly increased with the commissioning in 1961 of the first nuclear‐powered carrier (CVN), the 75,700‐ton Enterprise, which did not require refueling at sea. To deal with the large Soviet submarine force, thirteen Essexes were redesignated as antisubmarine carriers (CVS) between 1954 and 1973; these operated S‐2 Tracker pison‐engine search planes and H‐34 Seabat and H‐3 Sea King antisub helicopters. All of these carrier types and planes supported ground operations during the Vietnam War (1965–73). In addition, three converted Essexes acted as amphibious‐assault helicopter personnel carriers (LPH) during the 1960s, until superseded by the Iwo Jima (LPH) and Tarawa (LPA) classes (landing platform, helicopter or assault) built specifically for that purpose.

During the 1970s, doctrinal confusion and criticism over retention of the large and seemingly vulnerable attack carriers continued. They were retained because of repeated crises in the Middle East and the growing Soviet surface fleet, which though basically defensive, included a few carriers. Eight 81,600‐ton nuclear‐powered carriers of the Nimitz class with 1,089‐foot flight decks were added between the late 1960s and late 1990s to begin replacing older oil‐fueled ships. Each was accompanied by a protective screen of missile‐bearing escort ships and formed a carrier battle group. They provided the core of the offensive power projection that effectively deterred the Soviet Navy. F‐14 Tomcat fighters and F/A‐18 Hornet fighter attack planes joined the carriers during the 1970s and 1980s, respectively, along with S‐3 Viking antisub jet search planes to augment E‐2 long‐range early warning radar carrier aircraft.

Throughout the Cold War, attack carrier strength remained fairly constant between twelve and fifteen, but even the collapse of the Soviet Union in 1989–90 did not diminish the need for carriers to help deter and quell global tensions. Thus, six carriers participated during 1990–91 in the Persian Gulf War. The continuing requirement for such large numbers of these extremely versatile carriers has been governed by the fact that, generally, for every carrier operating on station, one is home‐ported undergoing refit and overhaul, and another is in transit to or from the operating area. In this way, the United States has maintained the long‐legged global reach of its naval power.
[See also Fighter Aircraft; Navy Combat Branches: Surface Forces; Navy Combat Branches: Naval Air Forces.]

Bibliography

Stefan Terzibaschitsch , Aircraft Carriers of the U.S. Navy, 1980.
Norman Friedman , Carrier Air Power, 1981.
Stefan Terzibaschitsch , Escort Carriers and Aviation Support Ships of the U.S. Navy, 1981.
Norman Friedman , U.S. Aircraft Carriers: An Illustrated Design History, 1983.
Clark G. Reynolds , The Fighting Lady: The New Yorktown in the Pacific War, 1986.
George C. Wilson , Supercarrier, 1986.
Edward P. Stafford , The Big E, 1988 repr.
Clark G. Reynolds , The U.S. Fleet‐in‐Being Strategy of 1942, The Journal of Military History, Vol. 58 (1994), pp. 103–118.
Theodore Taylor , The Magnificent Mitscher, 1991 repr.

Clark G. Reynolds

aircraft carriers are warships which operate aircraft from their decks. In January 1910 Commander Charles Samson RN flew off a Short biplane from a platform constructed on HMS Africa. In November that year the American aviator Eugene Ely, also using a specially built platform, performed the same feat from USS Birmingham. Then in January 1911 he landed on USS Pennsylvania after a landing platform and primitive arresting gear had been constructed over her aft guns. Though aircraft were regularly flown off numerous British warships during the First World War (1914–18)—and, in 1917, a Sopwith ‘Pup’ aircraft was landed on the flight deck superimposed on the forecastle of HMS Furious—it was not until Furious had a landing deck built abaft her bridge that regular attempts to land on her were made. These were in the main a failure and it was not until HMS Argus was built in 1918 with an unobstructed deck over her whole length that the problem of landing was satisfactorily solved. Argus dispensed with any superstructure or funnel by incorporating a hydraulically raised and lowered bridge, and by discharging her boiler smoke and gases over the stern.

Argus was followed in 1920 by HMS Eagle, converted from an uncompleted battleship, which had a superstructure and funnels offset on the starboard side of an otherwise unobstructed flight deck. This design was followed by HMS Hermes, completed three years later, the first ship to be built as a carrier from the keel up. These were known as ‘island’ carriers. The Furious emerged in her final form in 1925, a flush-deck carrier like the Argus.

The US and Japanese navies had meanwhile commissioned their first small carriers in 1922, the Langley and the Hoshi respectively. These were flush decked with funnels to one side which could be lowered horizontally during flying operations. No further carriers were built until after the conclusion of the Washington Treaty in 1922, when, by the treaty, the US and Japanese navies were each allowed to select for conversion to aircraft carriers two capital ships due to be scrapped. These were the US battlecruisers Lexington and Saratoga and the Japanese battlecruiser Akagi and battleship Kaga. These were all island carriers (i.e. carriers with the bridge structure offset to the side) of some 36,000 tons, though the superstructure in the Japanese ships was comparatively small as it did not incorporate the funnels. Instead, these projected horizontally over the side, a feature common to the majority of Japanese carriers.

The British selected two smaller ships, Courageous and Glorious, originally sister ships of the Furious, for conversion to island carriers. However, from 1937, when the British laid down the first of their post-Washington Treaty carriers, HMS Illustrious, their design differed from that of other navies in the incorporation of armoured flight decks and hangar sides which increased their resistance to bomb attack but reduced the number of aircraft they could operate. The Second World War (1939–45), in which aircraft carriers played a vital part, particularly in the Pacific, proved the necessity for such increased protection, and both the Americans and the Japanese adopted it for fleet carriers laid down after 1942. Three main types were used, 1939–45: large fleet carriers operating up to 100 aircraft; light fleet carriers, operating about 40; and escort carriers, converted from merchant ships, which operated up to 35 aircraft. None of the last type remained in service after the war, and most light fleet carriers were relegated to auxiliary roles. The US Navy was the only navy to continue operating large carriers in any number and it currently has nine Carrier Battle Groups, each having a nuclear-powered 80,000-tonne carrier of the Nimitz class which operate around 100 aircraft. It now (2004) has a new class under development and these carriers will have larger flight decks and very powerful nuclear power plants.

The British and other European navies opted for smaller carriers after the war. The British ones operated jump jets during the Falklands War (1982), and showed that carriers were still a vital asset for any navy in modern warfare. The British have two new ones on order as has the French Navy.

See also warfare at sea.

aircraft carrier ship designed to carry aircraft and to permit takeoff and landing of planes. The carrier's distinctive features are a flat upper deck (flight deck) that functions as a takeoff and landing field, and a main deck (hangar deck) beneath the flight deck for storing and servicing the aircraft. The aircraft carrier emerged after World War I as an experimentally modified cruiser. The first aircraft carrier built (1925) from the keel up as an aircraft carrier for the U.S. navy was the U.S.S. Saratoga. The aircraft carrier remained an experimental and untested war vessel until World War II, when the Japanese destroyed or drove out of the East Asian waters the British, Dutch, and U.S. navies with carrier-borne aircraft. By 1942 the aircraft carrier had replaced the battleship as the major unit in a modern fleet, and in World War II it was indispensable in naval operations against a sea- or land-based enemy. The battle of the Coral Sea (1942) was fought by naval aircraft, and the two opposing fleets never came within gunshot range of each other. After World War II aircraft carriers were enlarged and improved by the British and U.S. navies and became the nucleus of the standard naval combat formation. With the introduction of nuclear-powered carriers in the 1960s, extremely lengthy voyages became possible because such carriers do not need regular refueling.

Bibliography: See N. Polmar, Aircraft Carriers (1969); G. L. Pawlowski, Flat-Tops and Fledglings (1971); C. G. Reynolds, The Fast Carriers (1978).

aircraft carrier Military vessel with a wide open deck that serves as a runway for the launching and landing of aircraft. A modern nuclear-powered carrier may have a flight deck c.300m (1000ft) long, a displacement of c.75,000 tonnes, a 4000-man crew, and carry 90 aircraft of various types. Some carriers have large, angled decks to permit launching and landing simultaneously.

aircraft carrier a large warship equipped to serve as a base for aircraft that can take off from and land on its deck.

aircraft carriers, see carriers.