Corrected entry: We see Excelsior has the hull number MKT-2000. The only other prefix we have seen in Star Trek is NX for prototype vessels. Given the experimental drive, she should have been NX-2000. What is MKT? And why is she NCC-2000 in Star Trek VI?
Grumpy Scot
25th Sep 2003
Correction: The hull number of the Excelsior can be seen to be NX-2000 at least three times in the movie. On the Special Collector's Edition DVD NX-2000 can be seen at 0:12:37, 0:43:46, and 0:46:42. NX-2000 can be seen in the VHS version as well. An MKT-2000 is nowhere to be seen. The hull number is again NX-2000 in Star Trek IV: The Voyage Home. Only in Star Trek VI: The Undiscovered Country is the hull number NCC-2000. Presumably the ship is no longer a prototype at that point.