Supercarrier

A supercarrier is a form of aircraft carrier, generally considered to be 75,000 tons or greater in displacement—most countries operate carriers with a displacement of less than 40,000 tons (such as the French Charles de Gaulle), and more often closer to 15,000 (such as HMS Illustrious.)

The 81,000 ton USS Forrestal was the first operational supercarrier, though the United States would have been in service earlier, had it been completed. (Its cancellation triggered the "Revolt of the Admirals.") The United States would have had a nuclear strategic bombing role, rather than the multipurpose role that all subsequent supercarriers have had. The 72,000 ton armored Japanese carrier Shinano of the World War II era was almost heavy enough to be considered a supercarrier, but lacked several defining features, such as catapults, arrestor cables, and angled flight decks, and also did not possess the sheer size of modern supercarriers.

The U.S. Navy is still building large aircraft carriers to this day, of which the 100,000 ton Nimitz class is the most prolific. All completed supercarriers are American, although the Soviet Union did begin construction of the Ulyanovsk, an 85,000 ton nuclear carrier comparable in size to earlier American supercarriers. The Ulyanovsk was 40% complete when cancelled (along with a follow-on vessel) after the end of the Cold War in 1991.

Supercarrier classes

• United States (USA, 1950s) - Cancelled
• Forrestal class (USA, 1955) - All units decommissioned
• Kitty Hawk class (USA, 1961) - Three units decommissioned, one active
• Enterprise (USA, 1961) - single-unit class, still active
• John F. Kennedy (CV-67) (USA, 1968) - single-unit class, a modified Kitty Hawk design, still active
• Nimitz class (USA, 1975) - Final unit scheduled for completion in 2009, all units still active
• Ulyanovsk (USSR, 1990s) - Cancelled
• CVN-21 (USA, 2013) - Pending