- For other uses, see Sovereign.

A post-2379 era Sovereign.
This is a list of unnamed or unidentified Federation and Terran Sovereign-class starships.
By year[]
2340s-2350s[]

Destroyed at Wolf 359.
In one permutation of the Kelvin timeline, the Klingon Empire responded to the Federation's diplomatic overtures to the Dominion invading from the Gamma Quadrant with war. At least two Sovereign-class starships took part when Starfleet made its last stand against the Klingons at Wolf 359 in the 2330s or 2340s decade. Klingon birds-of-prey destroyed both ships, and Starfleet lost. (TOS - The Q Gambit comic: "Part 2")
2374-2375[]
In 2374 and 2375, deposed Emperor James T. Kirk of the Terran Empire intended to duplicate the captured USS Enterprise-E and its first copy, the ISS Enterprise-E, in the Goldin Discontinuity in the mirror universe, in order to defeat the Klingon-Cardassian Alliance with a fleet of Sovereign-class starships. (TOS - Mirror Universe Trilogy novels: Spectre, Dark Victory)
2380[]
By 2380, the Starfleet had access to no more than fifteen Sovereign-class starships, including the USS Enterprise-E. Zelik Leybenzon noted that fact when countless Sovereigns from other quantum realities appeared through a quantum fissure at Gorsach IX. (TNG novel: Q & A)
2379[]
In a permutation of the mirror universe where the Alliance held the galaxy in the chokehold, four Sovereign-class ships were part of the fleet chasing the insurgent Excalibur. These Sovereign were adorned with the Imperial logo on the prow, and yellow markings on top and bottom of the saucer section. The location of these markings varied. Their deflector dish was yellow, too. The fleet failed to prevent the Excalibur's escape into the primary universe through an interdimensional rift. (NF - Turnaround comic: "Part V")
2401[]
Encounter with the Singularity[]
When Starfleet Command assembled an armada near the newly appeared Borg spatial anomaly to reinforce the USS Stargazer in 2401, eight Sovereign-class starships joined Admiral Jean-Luc Picard's fleet there. The Borg Queen temporarily seized control of the Stargazer, and the rest of the armada through the Sagan-class ship's Borg enhanced-systems, forcing Admiral Picard to self destruct the Stargazer. A shockwar emanated from the explosion and shook the nearby ships but was otherwise absorbed by their deflector shields. (PIC episode: "The Star Gazer")
Battle of Frontier Day[]
Sometime after stardate 78186.03[1] in April of 2401, 38 Sovereign-class starships were part of the Frontier Day celebration held near Sol Station in Earth's orbit, including various named and 23 unidentified starships. They were among a total of 338 starships demonstrating fleet formation mode. The event was hijacked in a plot concocted by the Borg Queen and supported by rogue Changelings. All the ships fell under the control of the Borg Collective and began attacking the spacedock. Across the fleet, crewmembers under the age of 25 or its non-Human equivalent were assimilated and subdued older crewpersons. (PIC episode: "Võx")
The Battle of Frontier Day came to an end when Borg were defeated by the crews of the USS Titan-A and USS Enterprise-D, restoring control of the surviving ships to Starfleet. Captain William T. Riker symbolically declared this time stardate 1. (PIC episode: "The Last Generation")
2409-2411[]
In one permutation of the mirror universe, purple Sovereign-class assault cruisers were part of Captain James O'Brien's fleet harassing civilians and trade lines during incursions into the primary universe in 2409. (STO - Tour of Duty mission: "Defend the Beta Ursae Sector Block")
In another permutation, yellow-clad Sovereign-class star cruisers assaulted Vauthil Station and as part of a Terran invasion. They were repelled alongside the rest of the Terran fleet by a flotilla of Allied ships. (STO - Task Force Operation mission: "Mirror Invasion")
From 2409 to 2411, the red-coated Sovereign-class ships of Admiral Leeta also attacked Vauthil Station and the Badlands region, and were repelled by a squadron of Alpha Quadrant Alliance ships. (STO - Task Force Operation missions: "Mirror Invasion", "Badlands Battlezone")
2554[]
In the 26th century, ships of this class participated in the Battle of Procyon V, against the Sphere Builders and their Temporal Liberation Front allies. (STO - Future Proof missions: "The Battle of Procyon V", "Ragnarok")