The Twelfth Fleet was a numbered fleet in the United Federation of Planets Starfleet, active during at least the 23rd and 24th centuries.
Ships of the Star Fleet (Chris Wallace) continuity
In 2377-78, the command base of the Twelfth was Starbase 343. (Ships of the Star Fleet, Vol. 4: Star Fleet Operating Forces. )
Star Trek: Hidden Frontier continuity
In the post-Dominion War period, the 12th was assigned to Sector 441. Its command base was Deep Space 12.
Fleet elements
- Task Force 121
- Task Force 122
- Task Force 123
- Task Force 124
- Task Force 125
Background
The Twelfth Fleet was also the nickname for the Starfleet International chapters based in Region 12 — states of the American Midwest. (Starfleet International: Scott A. Akers, et al., Master Genealogy: Starfleet Region 12)
Reference
- Starfleet International: Scott A. Akers, et al., Master Genealogy: Starfleet Region 12
- Wallace, Chris. Ships of the Star Fleet, Vol. 4: Star Fleet Operating Forces.