page_title: Essex-class aircraft carrier
section_title: Space program
hierarchical_section_title: Essex-class aircraft carrier / Space program
caption_attribution_description: English: Apollo Command Module CM-011A, in the Apollo program exhibit on USS Hornet in Alameda, California. This command module was used in AS-202, an unmanned test flight, after which it was recovered by Hornet. The damage on the lower edge was caused by the capsule's subsequent use in a drop test. The spacesuited figure to the left is approximately life-sized.
context_page_description: The Essex class was a class of aircraft carriers of the United States Navy. The 20th century's most numerous class of capital ship, the class consisted of 24 vessels, which came in "short-hull" and "long-hull" versions. Thirty-two ships were ordered, but as World War II wound down, six were canceled before construction, and two were canceled after construction had begun. Fourteen ships of the class engaged in combat operations during World War II. No Essex-class ships were lost to enemy action even though several sustained crippling damage. The Essex-class carriers were the backbone of the U.S. Navy's combat strength during World War II from mid-1943 on, and, along with the three Midway-class carriers added just after the war, continued to be the heart of U.S. naval strength until the supercarriers came into the fleet in numbers during the 1960s and 1970s.
context_section_description: Several Essex-class ships played a part in the United States' human spaceflight program, as recovery ships for unmanned and manned spaceflights, between 1960 and 1973.
  USS Valley Forge was the recovery ship for the unmanned flight of Mercury-Redstone 1A on 19 December 1960. The first spaceflight by an American was on Mercury-Redstone 3 (Freedom 7), recovered by Lake Champlain on 5 May 1961. Randolph recovered the next flight, Mercury-Redstone 4 (Liberty Bell 7), on 21 July 1961, and she was the primary recovery ship for Mercury-Atlas 6 (Friendship 7), the first orbital flight by an American. The next manned flight, Mercury-Atlas 7 (Aurora 7), was picked up by Intrepid on 24 May 1962, and Kearsarge recovered the last two Mercury spacecraft, Mercury-Atlas 8 (Sigma 7), on 3 October 1962, and Mercury-Atlas 9 (Faith 7), on 16 May 1963.
  When the Mercury program's successor, Project Gemini, got underway, Essexes were again closely involved. Lake Champlain recovered the second unmanned flight, Gemini 2, on 19 January 1965; and Intrepid recovered the first manned flight, Gemini 3. Wasp recovered the crew of Gemini IV on 7 June, and on 29 August, Lake Champlain picked up Gemini 5 after eight days in space. In December 1965, Wasp made history by picking up two spacecraft in just over two days: Gemini VI-A on 16 December, and Gemini 7 on 18 December, after their orbital rendezvous test flight. She also recovered Gemini 9A on 6 June 1966 and the final Gemini spaceflight, Gemini 12 on 15 November.
  The successful use of the carriers as recovery ships continued into the Apollo program. On 26 February 1966, Boxer recovered the command module from AS-201, the first unmanned flight of a production Apollo Command and Service Module. AS-202, another sub-orbital test flight of the command module, was recovered in August by Hornet; the command module from that flight is currently on display aboard Hornet. Bennington recovered the command module of Apollo 4, the first unmanned flight of the Saturn V launch vehicle, on 9 November 1967.
  Eleven months later, Essex recovered the astronauts of Apollo 7, the first manned mission in the Apollo program, after eleven days in orbit. Yorktown recovered the astronauts of Apollo 8, after their historic flight around the Moon in December 1968;  and Princeton recovered the second crew to orbit the Moon, aboard Apollo 10, in May 1969.
  Hornet rejoined the program and recovered the astronauts from the first two moon landing missions, Apollo 11 in July 1969 and Apollo 12 in November. The first steps on Earth of returning astronauts Neil Armstrong, Buzz Aldrin, and Mike Collins, are marked on her hangar deck, as part of her Apollo program exhibit. The three subsequent missions utilized amphibious assault ships as support vessels; however, Ticonderoga recovered the astronauts of the last two moon missions, Apollo 16 and Apollo 17 in April and December 1972.
  In the post-Apollo era, Ticonderoga again acted as a recovery ship for the astronauts of Skylab 2, the first manned mission to Skylab, the first U.S. orbital space station, in June 1973.
caption: The Apollo program exhibit aboard Hornet.
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