No explanation is given for these vessels' FederationStarfleet-style registry numbers and their use of the "USS" name prefix, despite existing two years before the inception of the Federation.
The game software included numerous other names for ships of this class that were not prepared to be used in gameplay, and are hidden in the game's source code, including USS Anubis, USS Batidor, USS Bowie, USS Canis Major, USS Canis Minor, USS Carson, USS Equulus, USS Grus, USS Leo Minor, USS Pegasus, USS Revere, USS Taurus and USS Vulpecula. Possibly, these vessels were intended for some feature of the game that was not completed. For example, none of these ships are coded with registry number graphics like those the included ships possess.
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