What is the registry number of the USS Excelsior in Star Trek III? It is NX-2000.
The USS Excelsior appears in Star Trek III: The Search for Spock as an experimental prototype and the namesake of the Excelsior class. Its registry, NX-2000, reflects its status as an advanced test vessel designed around the ambitious “Great Experiment,” including an experimental transwarp drive.
The Excelsior is commanded by Captain Styles in the film, while Montgomery Scott serves aboard it as chief engineer. The ship is sent to pursue the USS Enterprise, but its experimental technology fails to give Starfleet the expected advantage.
Fans sometimes answer NCC-2000 because the vessel later appears with that designation after entering regular service. That is a real registry associated with the same ship, but it is not the number shown for the experimental Excelsior in Star Trek III. NCC-1701 belongs to the original USS Enterprise, while NCC-1701-D identifies a later Enterprise.