I have decided to ignore the NCC-65549 from the Fact Files, and assign NCC-63898 to the Spector. They confirm NCC-63549 for the USS Thunderchild on the hull. The diagrams in Star Trek: The Magazine and the Official Starships Collection are directly derived from the Akira CGI. This is also the case on the ILM size chart, where the information for the Fact Files seems to come from, although here the Thunderchild is NCC-63898. The named ships in the above list appear in the Star Trek Fact Files where the registry of the USS Thunderchild diagram is NCC-65549 instead of NCC-63549, while the latter number is assigned to the USS Spector. There is confusion about the Akira registries.The size of the ship is discussed on a separate page. The Akira class was designed by Alex Jaeger of ILM for "First Contact" and exists only as a CGI model.The Akira has two shuttlebay doors at the rear and one central door at the front end of the saucer. A weapons module is located at the top between the two secondary hulls. The warp pylons are swept downward and are affixed at their upper ends to two catamaran-like secondary hulls which run into the top of the saucer section. General description The Akira class is a relatively large type of starship with heavy armament. Starfleet A-K Starfleet L-Z Uncertain Starfleet Class Unknown Starfleet Class