NX class

The NX-class was a type of starship used by Earth Starfleet in the mid-22nd century as a medium for the new Warp 5 engine that would form the basis of humans first reach into the galaxy. (Star Trek: Enterprise).

Known Vessels

 * Enterprise (NX-01)
 * Columbia (NX-02)

Mirror Universe Vessels

 * ISS Enterprise (NX-01)
 * ISS Avenger (NX-09)