|Owner:||United Federation of Planets|
In 2293, the Korolev was assigned to an undisclosed diplomatic mission near Klingon territory during the time Operation Retrieve was proposed. (Star Trek VI: The Undiscovered Country, display graphic)
Later that year, the location of the Korolev was labeled in the star chart for the "Operation: Retrieve" command briefing. This star chart was seen in the office of the Federation President on Earth. (Star Trek VI: The Undiscovered Country, set artwork)
The Korolev was not mentioned in dialog, but was listed on a display screen on the bridge set. While not official sources, both Last Unicorn Games and Decipher RPG supplements state that this vessel may be a Miranda-class starship.
It is unclear if this ship is related to the Korolev-class which was employed during the 2360s. According to the Star Trek Encyclopedia, this class is named after the Russian scientist and engineer Sergey Korolyov.
According to a ship listing included in the plans, and not seen in the extended cut of the movie, this ship was commanded by J. Downer, and the ship was located in Sector 21399. On a page seen in the movie, showing the relation of Starbase 24 to Rura Penthe, the Korolev was represented by the silhouette of a Constitution-class heavy cruiser.