U.S.S. Endeavour (NCC-71805-A)
Ten years after the destruction of the previous vessel to bear the name, the U.S.S. Endeavour-A was launched from the 40 Eridani A Starfleet Construction Yards on Stardate 59523.11 under the command of Captain Telahrehaa Ch'Raazne. After her shakedown cruise the vessel was assigned to one of the Task Forces overseeing the exploration of the Delta Quadrant.
By 2385 the vessel had been reassigned to a region known as the Jathlin Arm where it was based out of the Regula-Class, Kepler Station between exploratory missions (KS0: Hello, my name is Kepler...). The Endeavour was out on a long-haul mission investigating a region known as the Star Desert when news the station's sudden disappearance reached them (KS6: Herschel's Kisses).
Although many of the crew had family on Kepler Station, their assignment to the Jathlin Arm kept them in the Delta Quadrant. They were surveying a gathering of Cosmozoans feeding off the energy of a Red Dwarf when once again disastrous news reached them; terrorists had attacked the station (KS9: Freud's Hostage).
Believing Kepler Station to have been destroyed as a result, Starfleet began to reassess their expansion into the Delta Quadrant and whether they could justify the expenditure. As a result many of the vessels assigned to the Jathlin Arm were recalled to the Alpha Quadrant for reassignment. When Kepler Station reappeared in The Expanse six months later, unaware of any time having passed, Starfleet formed Task Force 92 under the command of Rear Admiral Jeremiah William Holden and made the U.S.S. Endeavour-A her Flagship (KS10.1: Honey, I'm Holm!).
Since then the Endeavour has continued to act in an exploratory capacity while performing her duties as Flagship. In March of 2387 the crew delivered Antedean Ambassador Hu J'Ron Vek and Expanse Oversight Advisory Chairman, Lt. Commander Hank McAllister, to the planet Oratt IX where they represented the Federation in hearing a formal petition by the Oratti for protected status (KS18: Faradays Gone By).
Launched in 1764 as the collier Earl of Pembroke, the vessel was purchased by the British Royal Navy in 1768 for a scientific mission to the Pacific Ocean and to explore the seas for the surmised Terra Australis Incognita or "unknown southern land".
Renamed and commissioned as His Majesty's Bark the Endeavour, the ship departed Plymouth under the command of Lieutenant James Cook, who sailed her rounded Cape Horn, and reached Tahiti in time to observe the 1769 transit of Venus across the Sun. It then went on to map the continent of Australia and the various islands of New Zealand by 1771.
While James Cook was feted for his successful voyage, Endeavour itself was largely forgotten. Within a week of her return to England, she was directed to Woolwich Dockyard for refitting as a naval transport. She then made two routine return voyages to the Falkland Islands, the first to deliver provisions and the second to bring home the British garrison. After being completely paid-off the previous year, Endeavour was sold in 1775 to shipping magnate J. Mather for £645.
Mather renamed the increasingly decrepit ship Lord Sandwich and returned her to sea for at least one commercial voyage to Archangel in Russia. In late 1775, he was asked by the Admiralty to provide a ship to transport soldiers to North America to help defeat the colonial militia during the American Revolution. Mather offered to return the ageing vessel to military service, but her condition was so poor that she was declared unseaworthy. After extensive repairs, the ship was finally accepted as a troop transport in February 1776 and embarked a contingent of Hessian mercenaries bound for New York and Rhode Island.
After delivering her mercenary cargo, Lord Sandwich sailed to Newport, Rhode Island where she was retained at anchor and was intermittently used as a prison ship under the British flag. Endeavour’s end came in August 1778, when the British settlement at Narragansett Bay was threatened by a fleet carrying French soldiers in support of the colonial militia. The British commander, Captain John Brisbane, determined to blockade the bay by sinking surplus vessels at its mouth. Between 3 and 6 August a fleet of Royal Navy and private craft, including Lord Sandwich, were scuttled at various locations in the Bay.
Space Shuttle Endeavour (OV-105)
Originally built as a structural spare alongside Discovery and Atlantis, the Space Shuttle Endeavour was the fifth such vehicle constructed as part of NASA's line of orbiters. Named after the British HMS Endeavour, the ship which took Captain James Cook on his first voyage of discovery (1768–1771), hence the British spelling rather than the American ("Endeavor"). This caused confusion, including when NASA itself misspelled a sign on the launch pad in 2007. The name also honoured Endeavour, the Command Module of Apollo 15, which was also named after Cook's ship.
Running more than twenty-five missions out of the Kennedy Space Center at Cape Canaveral in Northern America, the Endeavour and her sister craft were decommissioned in 2012 after a shift in focus towards alternative methods of space flight affected NASA's funding. The final journey Endeavour made was to the California Science Center in Los Angeles.
U.S.S. Endeavour (NX-06 / NCC-06)
The sixth starship built by United Earth, prior to the formation of the United Federation of Planets, was the Endeavour which, under the command of Captain Winchester, was launched from the Utopia Planitia Fleet Yards on 2 June 2156.
Her inaugural year would prove to be one of Endeavour's most difficult. Just prior to the opening of hostilities between the two governments in the Earth-Romulan War, the Endeavour had a brief engagement with a Romulan vessel in the Cheron system. The Endeavour was forced to retreat but later found itself dealing with another Romulan attack, this time an attempt to remotely take control of the United Earth ship. Thanks to several software improvements in the Endeavour's construction the attempt failed and the crew were able to fend off the attack.
During the Second Battle of Altair VI, the portside hull plating was melted off through the use of nuclear weapons and her second Commanding Officer, Captain Shea was severely injured.
After the formation of the United Federation of Planets, the Endeavour was one of many ships that underwent a major retrofit to the new Columbia-Class specification. The class was born out of the existing, and proven, NX-Class design, and was named, at the insistence of Admiral Jonathan Archer, after the first vessel of the NX-Class to be lost in action, the Columbia.
The most noticeable difference between the classes was the addition of a secondary hull which was slung underneath the saucer section. This new hull had a deep rear undercut allowing it to be positioned in the warp field's secondary node while in flight and a more powerful, circular navigational deflector. It also housed the new, larger warp core which allowed speeds in excess of warp factor six.
Upon completion of the upgrades, the vessel was re-christened U.S.S. Endeavour and given the new registry of NCC-06. Commander T'Pol was promoted to the rank of Captain and assumed command of the ship.
U.S.S. Endeavour (NCC-1895)
For an extremely brief period during the mid 2240's an Icarus-Class vessel, which took part in the Battle of Donatu V, bore the name Endeavour. However, having undergone a number of registry changes during her construction (both NCC-1716 and 1777 under the name Endeavor), the traditional spelling of the name was ultimately passed onto a Constitution-Class vessel launched in the early 2250's under the command of Captain Mary-Anne Rice.
By the early 2260's command of the Endeavour had passed to Captain Zhao Sheng. Following his Five-Year Mission both the captain and his vessel were one of three assigned to Vanguard Starbase 47 in the Taurus Reach.
Undergoing a refit to Enterprise-subclass specifications, following the beginning of U.S.S. Enterprise's modifications, Endeavour spent the 2280's and early 2290's in deep-space exploration. It was among the starships that would have been assembled for the abandoned assault code-named Operation Retrieve, which would have rescued Captain James T. Kirk and Doctor Leonard McCoy from Qo'noS in 2293. The vessel remained in active service until it was decommissioned some time after, then Lieutenant JG, Rachel Garrett was assigned during patrol of the Romulan Neutral Zone in 2321.
U.S.S. Endeavour (NCC-71805)
Originally commanded by Captain Joseph Amasov, the next generation of Federation starship Endeavour was launched in the early 2360's. She served in both an exploratory and patrol capacity until, like so many others, the vessel and crew were called to aid in the defence against the Borg at Wolf 359.
Of the Borg, Amasov was quoted as saying; "In all my years I could never imagine terror such as this. Cold. Calculating... Murderous. It is just a matter of pure luck that any of us are alive right now. The Borg are as close to pure evil as any race we've ever encountered."
Miraculously the Endeavour survived the battle, one of the only ships to do so, and at the cost of half her crew. Amasov stayed in a hospital on Earth for some time following the battle. In 2368, with a restored crew and her Captain returned to command, the Endeavour was assigned to the Starfleet blockade force at the Klingon-Romulan border during the Klingon Civil War. It was the last ship to clear the drydock prior to the departure of the fleet from Starbase 234. During the initial deployment of the tachyon detection grid, the Endeavour was linked with the USS Ajax, USS Hood, USS Tian An Men, and USS Enterprise-D. Later that year, the ship was assigned to a patrol circuit in the Cleon system.
During her years of service the Endeavour has faced off against the Borg more than almost any other Federation vessels, except for the U.S.S. Enterprise-D and U.S.S. Voyager. In 2373, under the command of Captain Nikolas Kyprios, the vessel was involved in the Battle of Sector 001, the second largest conflict against the Borg.