Starfleet Mission Status, 2367

Starbase 174 was mentioned on a Starfleet operations chart

Starbase 174 was a Federation starbase administered by Starfleet, which was located in the region of space between sectors 21166 and 23079.

In 2367, the USS Hood had its major systems upgraded at this base. The base was listed in the chart "Starfleet Operations - Sectors 21166-23079" that was on display on the bridge of the USS Enterprise-D. (TNG: "Brothers" okudagram)

This starbase was only mentioned in writing.