|Owner:||United Federation of Planets|
In 2293, the Emden was assigned to patrol the Neutral Zone. This starship was selected as additional support, along with the USS Ahwahnee and the USS Endeavour, for the military operation code-named Operation Retrieve. (Star Trek VI: The Undiscovered Country)
- On the plans, the Emden is represented by the silhouette of a refit Constitution-class heavy cruiser.
- An unseen element from the Operation Retrieve charts included a list of starships, their registries and their commanders. According to this list, the Emden was commanded by C. Thomas; named after that film's photographic effects editor Robert C. Thomas. Emden's last reported location was in Sector 21803. 
- The Decipher roleplaying game supplements stated that this vessel may be a Ranger-class starship.
- The Emden may be named after one of several German navy ships of the same name, which were, in turn, named after the city of Emden.