The USS Scovill (NCC-1598) was a Federation starship that was in service with Starfleet in the late 23rd century.
The Scovill was conducting astronomical research near Klingon territory. (Star Trek VI: The Undiscovered Country)
According to a ship listing included in the plans, and not seen in the extended cut of the movie, the ship's commanding officer was D. Hulett, and the ship was located in Sector 21837.
The ship's captain was named after the sixth movie's prop master Don Hulett