The Nebula entered service in 2357. (Ship Recognition Manual, Volume 1: The Ships of Starfleet)
- There appears to be some confusion about this ship's registry number. According to Star Trek: Communicator, it has the registry of either NCC-60147 (article) or NCC-60000 (image). To add confusion to the issue, Decipher RPG reference book Starships lists her registry as NX-60602.