The Beta Antares Ship Yards are Federation shipyards located in the Antares sector.
The USS Prometheus was built there, and launched in 2374. (VOY: "Ship in a Bottle")
The USS Phoenix-X was launched here a few months later. (Star Trek: Phoenix-X: "Secret Occurrences")
The USS Vanderbilt, an Antechrist-class carrier, was under construction there as of 2415. (Star Trek: False Vacuum: "Asteroid Dusting")
During the Federation Civil War, the shipyards were under the control of the "patriot" fleet. The USS Dauntless (NCC-74912) was launched from there in 2373, under the command of Captain Timothy Barranco.
Several months later, the USS Prometheus (NX-74913) was launched from Beta Antares yards on stardate 50749.5. (Star Trek: Pendragon)