Pax class
The Pax class was a type of Federation starship in service with Starfleet during the 32nd century. During that century, the , a ship of this class, was the mobile headquarters for both the Federation and Starfleet. ()

Structure 
This space station also served as Starfleet Headquarters. Further, the Federation's executive branch and presumably the Federation Council were located here as well. Starfleet operated this facility, which was protected by a distortion field to keep its location a secret. It had a main habitable section with twisting structures enclosing streamers of field generation energy at the station's center. Field generation panels in static positions were placed at a safe distance around the upper habitable section. Streams of energy for the field poured out of the poles of the station.

The habitable section had many decks. The topmost deck was notable for its holographic star chart of the Milky Way Galaxy and the station's dedication plaque. The next deck down had offices. Other sections of the station contained a sickbay and interrogation rooms. The station had a primary and a secondary operations center. Programmable matter was used in the station for creating walkways and doors.

The station had at least seven briefing rooms and a multi-deck shuttlebay.  

The streamers of field generation energy at the station were connected by thin energy cables to the hulls of ships. The collective energy of these ships sustained the distortion field. These streamers emitted a brilliant light which obscured parts of the surrounding habitable section. ()

Following the collapse of the Emerald Chain, the cloaking field surrounding the station was dismantled and new structures were added to the station. Starting in 3190, this station would be the home for a reestablished Starfleet Academy. A new spacedock, the Archer Spacedock, was built within visual range of the station. This dock would be used for retrofitting existing ships and for the construction of new starships. ()

The station was also mobile and equipped with a warp drive, so that it could relocate as needed. In addition, its individual decks could detach as self-sustained lifeboats, also with warp capability; this was demonstrated during the effort to evacuate Earth when the Dark Matter Anomaly threatened in 3190. ()

Name 
This Pax-class station, being both a starbase and an actual starship, had its own name and registry: USS Federation NCC-325002.

Federation starship classes