In a parallel universe, the USS Enterprise, registry number NCC-1701, was a Constitution-class Starfleet vessel used for exploration by the United Federation of Planets during the 23rd century. It was the "original" vessel named Enterprise, a lineage that would be followed by the Enterprise-D in the 24th century.
On stardate 3368.5, the Enterprise was sent to investigate the communications blackout of Aprilia III, helping the Fourth Doctor defeat a group of CyberNomads. The Enterprise crew subsequently logged this mission in its archives, a record that survived into the 24th century for the Enterprise-D to consult. (COMIC: Assimilation²)
- USS Enterprise (NCC-1701) at Memory Alpha, the Star Trek canon wiki
- USS Enterprise (NCC-1701) at Memory Beta, the wiki that covers all licensed Star Trek works