E class

The E class was a Federation space station type, a starbase and spacedock in Starfleet service in the 23rd and 24 centuries. The design was used both in the primary universe and the Kelvin timeline. (,, mission: "Skirmish")

History and specifications
The primary hull of an E-class station consisted of central sphere that was larger than most starships found docking at such a starbase. A ring was attached to the sphere in a low orbit, and six equidistant docking arms extended from that ring. The docking arms terminated in flat disks, reminiscent of starship saucer sections. Ships were found docked on the disks. 

Service history
Around stardate 73XX.6 (circa 2270), E-class Space Station Battle Group 2 served as base of operations for Battle Group 2, providing docking and repair facilities. Ships returning damaged from encounters could be repaired by workbees. ( missions: "Skirmish")

In 2371, Deep Space Station E-5 serviced ships at the midpoint between the Romulan Neutral Zone and Sector 001. 

Kelvin timeline
In the Kelvin timeline, the   was operational as early as 2258. 

In 2262, Starbase Savitskaya was the site of a multi-faction battle in the Spectrum War. (

Six months later, was destroyed in a meteor shower.