- For other uses, see Jefferies.
The Jefferies class was a Federation starship type, a tier 2 cruiser class in Starfleet service in the early 25th century. (STO - Legacy mission: "Welcome to Earth Spacedock")
History and specifications
After the Constitution-class heavy cruiser USS Enterprise returned from its historic five-year mission in 2270, one idea of an extensive refit included the Phase II concept, with a projected launch in 2271. The design was notable for the prominent registry number painted on either side of the secondary hull, and the use of square warp nacelles on an Enterprise. (The Official Starships Collection Issue Bonus Edition 08: "USS Enterprise NCC-1701 Phase II Concept")
The Enterprise was instead refitted to Enterprise-class configuration, and launched after 2.5 years of work in 2273. (TOS movie & novelization: The Motion Picture)
Late in 2410, Starfleet revisited several "iconic" starship classes with upgrades to match them with the newest starship designs. These were called legendary starships. (STO website: Legacy : 10th Anniversary Legendary Starship Bundles)
Following the Battle of Excalbia in early 2411, which saw the prominent involvement of hero ships from the Federation's past and present, the newly-minted Jefferies-class was added to the lineup of tier 2 cruisers. (STO missions: "Legacy", "Measure of Morality (Part 2)", "Welcome to Earth Spacedock")
Alternate timelines
In the Phase II continuity, the Jefferies-class Enterprise was relaunched in 2271 and visited Earth. (The Official Starships Collection Issue Bonus Edition 08: "USS Enterprise NCC-1701 Phase II Concept")
This Enterprise was equipped with small, aerodynamic shuttlecraft, including the NCC-1701/9. (The Official Starships Collection Issue Bonus Edition 19: "USS Enterprise Shuttlecraft Phase II Concept Special Issue")
The USS Enterprise commenced a second five-year mission under Captain James T. Kirk in 2273. Soon after, a Romulan scout ship crashed into the saucer section. The situation was defused by Captain Kirk and science officer Xon, though the Romulan crew committed suicide. (TOS - Waypoint comic: "The Fear")
Livery
In the 25th century, the hull design of the Jefferies-class legendary cruiser allowed its commanding officer to choose from different livery materials. These could be modified at shipyards. The material options included numbered Types, Upgrade and Veteran. (STO missions: "Legacy", "Welcome to Earth Spacedock")
Furthermore, the installation of deflector shields from specific factions modified the hull appearance, including shields from the Reman Resistance, the Breen Confederacy and the Dominion. (STO missions: "Coliseum", "Cold Storage", "Boldly They Rode")
Appendices
Connections
| Variants and sub-classes of the Constitution-class starship | ||
|---|---|---|
|
Constitution-class (mk I) • Bonhomme Richard-class (mk II) • Achernar-class (mk III) • Tikopai-class (mk IV) • Enterprise-classes (mk I-III refits) • Excalibur-class (24th century) • Vesper-class (24th century) • Exeter-class (25th century) • Kirk-class (31st century) • Constitution-class (Kelvin timeline) • Constitution-class (mirror universe) | 
|
