- The Star Fleet Data File, vol. 1 gave no date for the construction of the prototype, so it was assumed that construction could take place no later than ca. 2287, after transwarp propulsion proved to be impractical and Ingram-class vessels were refit to an Excelsior-class heavy cruiser standard. No registry number was given for the prototype.
Log entries from the flight tests indicated "a nearly perfect shakedown cruise," but no names of any production starships are known.