The US Navy currently operates 10 aircraft carriers, some famous examples being the USS Nimitz, USS Dwight D, Eisenhower and USS John C. Stennis. Six currently commissioned carriers are named after former US presidents, the George Washington, Abraham Lincoln, Harry S. Truman, Ronald Reagan, George H.W. Bush and Theodore Roosevelt.
The US Navy has the largest fleet of aircraft carriers in the world, more than all other nations combined. The USS Nimitz was originally deployed on May 3, 1975 and is the oldest actively commissioned aircraft carrier in the US Navy.
Aircraft carriers are designed to be power projection ships, meaning they have the ability to not only fight at sea but to project an area of control for hundreds of miles around them. The Nimitz class carriers are the largest warships in the world, each measuring more than a thousand feet in length. Carriers are the flagships of the fleet, organized into carrier strike groups composed of between eight and 16 ships. The Navy is currently constructing the lead ship of the next generation of aircraft carriers, the USS Gerald R. Ford, as of 2015. Slated for completion in 2016, the Gerald R. Ford is set to be both less expensive to maintain and more combat effective than the Nimitz class carriers.