The USS Enterprise (XCV-330), also classified as the SS
Enterprise was the first spacecraft named Enterprise to be
designated a starship.
The Enterprise was originally built as a simple fusion probe on
Earth in the early 21st century. It was one of the earliest vessels
to leave the Sol system in the pre-warp era.
The Enterprise became an enduring part of mankind's early space
voyages, enough so that its image was seen alongside the Phoenix at
the 602 Club in the 2140s.
In 2175, the vessel was refitted and brought back into service
as a historical passenger liner within the Federation. For 47
years, the Enterprise offered large-scale transport between the
major planets of the Federation.
Fifty years after its retirement, the Enterprise was still not
as well-known as its sister ships. In 2273, an image of the
Enterprise was erroneously believed to be an early, unused
Vulcan-based prototype. Its image was briefly placed in the
recreation room of the Constitution-class Enterprise before being
taken down and replaced with one of the more famous Enterprise
(NX-01).
[Reference the Memory Beta Wiki]
