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Nimitz-class aircraft carrier
The Nimitz class is a class of ten nuclear-powered aircraft carriers in service with the United States Navy. The lead ship of the class is named after World War II United States Pacific Fleet commander Fleet Admiral Chester W. Nimitz, who was the last living U.S. Navy officer to hold the rank. With an overall length of 1,092 ft (333 m) and a full-load displacement of over 100,000 long tons (100,000 t), the Nimitz-class ships were the largest warships built and in service until USS Gerald R. Ford entered the fleet in 2017.
Instead of the gas turbines or diesel–electric systems used for propulsion on many modern warships, the carriers use two A4W pressurized water reactors. The reactors produce steam to drive steam turbines which drive four propeller shafts and can produce a maximum speed of over 30 knots (56 km/h; 35 mph) and a maximum power of around 260,000 shaft horsepower (190 MW). As a result of nuclear power, the ships are capable of operating for over 20 years without refueling and are predicted to have a service life of over 50 years. They are categorized as nuclear-powered aircraft carriers and are numbered with consecutive hull numbers from CVN-68 to CVN-77.
All ten carriers were constructed by Newport News Shipbuilding Company in Virginia. USS Nimitz, the lead ship of the class, was commissioned on 3 May 1975, and USS George H. W. Bush, the tenth and last of the class, was commissioned on 10 January 2009. Since the 1970s, Nimitz-class carriers have participated in many conflicts and operations across the world, including Operation Eagle Claw in Iran, the Gulf War, and more recently in Iraq and Afghanistan.
The angled flight decks of the carriers use a CATOBAR arrangement to operate aircraft, with steam catapults and arrestor wires for launch and recovery. As well as speeding up flight deck operations, this allows for a much wider variety of aircraft than with the STOVL arrangement used on smaller carriers. An embarked carrier air wing comprising around 64 aircraft is normally deployed on board. The air wings' strike fighters are primarily F/A-18E and F/A-18F Super Hornets. In addition to their aircraft, the vessels carry short-range defensive weaponry for anti-aircraft warfare and missile defense.
The unit cost was about US$8.5 billion in FY 2012 dollars, equal to US$11.4 billion in 2024.
The Nimitz-class aircraft carriers have a length of 1,092 ft (333 m) overall and 1,040 ft (317 m) at the waterline, with a beam of 252 ft (77 m) overall and 134 ft (41 m) at the waterline; the individual ships have slight variations in their dimensions. They were initially designed with a full-load displacement of 87,000 long tons (88,000 t; 97,000 short tons) and a draft of 37 ft (11 m), but the ships would be delivered several thousand tons heavier, particularly for later members of the class. As the vessels were overhauled and installed more equipment, loaded displacement would climb to exceed 100,000 long tons (100,000 t; 110,000 short tons). For example, USS Abraham Lincoln currently displaces 104,112 long tons (105,783 t; 116,605 short tons) at full load. The ships' nominal complement comprises: 3,000–3,200; 1,500 (air wing); and 500 (other).
The Nimitz-class aircraft carriers were ordered to supplement the aircraft carriers of the Midway, Forrestal, Kitty Hawk and Enterprise classes, maintaining the strength and capability of the U.S. Navy after the older carriers were decommissioned. The ships were designed to be improvements on previous U.S. aircraft carriers, particularly the Enterprise and Forrestal-class supercarriers, although the arrangement of the vessels is relatively similar to that of the Kitty Hawk class. Among other design improvements, the two reactors on Nimitz-class carriers take up less space than the eight reactors used on Enterprise. Along with a more generally improved design, Nimitz-class carriers can carry 90% more aviation fuel and 50% more ordnance when compared to the Forrestal class.
The U.S. Navy has stated that the carriers could withstand three times the damage sustained by the Essex class inflicted by Japanese air attacks during World War II. The hangars on the ships are divided into three fire bays by thick steel doors that are designed to restrict the spread of fire. This addition has been present on U.S. aircraft carriers since World War II, after the fires caused by kamikaze attacks.
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Nimitz-class aircraft carrier AI simulator
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Nimitz-class aircraft carrier
The Nimitz class is a class of ten nuclear-powered aircraft carriers in service with the United States Navy. The lead ship of the class is named after World War II United States Pacific Fleet commander Fleet Admiral Chester W. Nimitz, who was the last living U.S. Navy officer to hold the rank. With an overall length of 1,092 ft (333 m) and a full-load displacement of over 100,000 long tons (100,000 t), the Nimitz-class ships were the largest warships built and in service until USS Gerald R. Ford entered the fleet in 2017.
Instead of the gas turbines or diesel–electric systems used for propulsion on many modern warships, the carriers use two A4W pressurized water reactors. The reactors produce steam to drive steam turbines which drive four propeller shafts and can produce a maximum speed of over 30 knots (56 km/h; 35 mph) and a maximum power of around 260,000 shaft horsepower (190 MW). As a result of nuclear power, the ships are capable of operating for over 20 years without refueling and are predicted to have a service life of over 50 years. They are categorized as nuclear-powered aircraft carriers and are numbered with consecutive hull numbers from CVN-68 to CVN-77.
All ten carriers were constructed by Newport News Shipbuilding Company in Virginia. USS Nimitz, the lead ship of the class, was commissioned on 3 May 1975, and USS George H. W. Bush, the tenth and last of the class, was commissioned on 10 January 2009. Since the 1970s, Nimitz-class carriers have participated in many conflicts and operations across the world, including Operation Eagle Claw in Iran, the Gulf War, and more recently in Iraq and Afghanistan.
The angled flight decks of the carriers use a CATOBAR arrangement to operate aircraft, with steam catapults and arrestor wires for launch and recovery. As well as speeding up flight deck operations, this allows for a much wider variety of aircraft than with the STOVL arrangement used on smaller carriers. An embarked carrier air wing comprising around 64 aircraft is normally deployed on board. The air wings' strike fighters are primarily F/A-18E and F/A-18F Super Hornets. In addition to their aircraft, the vessels carry short-range defensive weaponry for anti-aircraft warfare and missile defense.
The unit cost was about US$8.5 billion in FY 2012 dollars, equal to US$11.4 billion in 2024.
The Nimitz-class aircraft carriers have a length of 1,092 ft (333 m) overall and 1,040 ft (317 m) at the waterline, with a beam of 252 ft (77 m) overall and 134 ft (41 m) at the waterline; the individual ships have slight variations in their dimensions. They were initially designed with a full-load displacement of 87,000 long tons (88,000 t; 97,000 short tons) and a draft of 37 ft (11 m), but the ships would be delivered several thousand tons heavier, particularly for later members of the class. As the vessels were overhauled and installed more equipment, loaded displacement would climb to exceed 100,000 long tons (100,000 t; 110,000 short tons). For example, USS Abraham Lincoln currently displaces 104,112 long tons (105,783 t; 116,605 short tons) at full load. The ships' nominal complement comprises: 3,000–3,200; 1,500 (air wing); and 500 (other).
The Nimitz-class aircraft carriers were ordered to supplement the aircraft carriers of the Midway, Forrestal, Kitty Hawk and Enterprise classes, maintaining the strength and capability of the U.S. Navy after the older carriers were decommissioned. The ships were designed to be improvements on previous U.S. aircraft carriers, particularly the Enterprise and Forrestal-class supercarriers, although the arrangement of the vessels is relatively similar to that of the Kitty Hawk class. Among other design improvements, the two reactors on Nimitz-class carriers take up less space than the eight reactors used on Enterprise. Along with a more generally improved design, Nimitz-class carriers can carry 90% more aviation fuel and 50% more ordnance when compared to the Forrestal class.
The U.S. Navy has stated that the carriers could withstand three times the damage sustained by the Essex class inflicted by Japanese air attacks during World War II. The hangars on the ships are divided into three fire bays by thick steel doors that are designed to restrict the spread of fire. This addition has been present on U.S. aircraft carriers since World War II, after the fires caused by kamikaze attacks.