Star Trek Expanded Universe
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For additional meanings, see Vanguard.

Starbase 47 (known as Vanguard) was a United Federation of Planets facility active during the 23rd century. (Star Trek: Vanguard novel: Harbinger)

A different Starbase 47 would be in service during the 24th century. (TNG: "Aquiel")

After USS Constellation discovered the metagenome in the Taurus Reach in 2263, the Federation fast-tracked the construction of a base in the region.

The station's first commanding officer was Commodore Diego Reyes, and he was later succeeded by Admiral Heihachiro Nogura. (Star Trek: Vanguard novel: Open Secrets)

By the 32nd century, Starbase 904 would become known as Starbase Vanguard. (Star Trek: Discovery novel: Wonderlands)

Orion Press[]

In this continuity, Starbase 47 was located on the homeworld of the Deltans, and Willard Decker served a tour of duty there. (Orion Press: Orion Press Lexicon 2010: S-T)