Trivia: The first time we hear of "transwarp drive" technology is in The Search for Spock; presumably, using Transwarp Drive, the Excelsior should be able to easily overtake the Enterprise, even at maximum warp. Montgomery Scott easily sabotages the Excelsior, however, and we never see the transwarp drive in action. For some reason not explained in Star Trek canon, the Great Transwarp Experiment was abandoned as a failure at this point, so we never learn of the actual maximum speed of a starship with Transwarp Drive.
Charles Miller
12th May 2017