The Universe class was a Federation starship class, a multi-mission explorer in Starfleet service in the 26th century. One ship of this class was the USS Enterprise (NCC-1701-J). (ENT episode: "Azati Prime", ST reference: Star Trek Encyclopedia 4th ed., ST reference: The Official Starships Collection #89)
History and specifications
A Universe-class starship was grown from replicated components. The ship's length was given as 3,219 and 3,618 meters, or 2 miles. The vessel was large enough to be divided into 'Urb' called suburbs, based on various environments, including large parks, entertainment zones and universities. The ship's population included a multi-species crew.
Due to the size, site-to-site transporters replaced turbolifts, and traditional concepts of up and down were redundant in a zero-g environment. Thus, windows covered top and bottom of the saucer. There was no centralised bridge. (ST reference: The Official Starships Collection #89)
The Universe-class starship USS Enterprise-J was the Federation flagship during the Battle of Procyon V against the Sphere Builders and their Temporal Liberation Front allies. The 25th century Odyssey-class star cruiser ISS Enterprise-F was able to hold out in direct combat due upgrades it received from the 29th century. (STO - Agents of Yesterday mission: "The Battle of Procyon V")