USS Endeavour (NCC-06)

The Endeavour (NX-06) was a United Earth starship, an vessel that entered  service in the 22nd century, in the mid-2150s decade.

History and specifications
It was completed in June 2, 2156 after the Atlantis and put under the command of Captain Winchester. After his death, XO Shea assumed command.

The Endeavour had several computer software improvements that allowed it more protection against attempts by the Romulans to remotely take over the ship. 

In 2156, this starship had a brief engagement with a Romulan ship near the planet Cheron IV. During the course of the battle, the Endeavour retreated. This engagement occurred very shortly before the opening of hostilities between the two governments in the Earth-Romulan War. 

During the the battle of Altair VI, the Endeavour's portside hull plating was melted off through the use of nuclear weapons. During the battle, Commander Goldser was killed during the attack forcing Captain Shea to promote Lieutenant Commander Stephen Reynard to XO. Captain Shea died sometime after the battle and Reynard was made captain. 

Background
In the Decipher RPG source, this vessel was referred to with the "USS" registry prefix, even though the Romulan War era Endeavour seen in later sources was revealed to be an NX-class vessel. While the NX ships did not generally have names of that type in canon, other licensed source mention others with this nomenclature.