James Wright wrote:
Gentlemen(snicker), you're forgetting about the Romulan Bird of Prey seen in TOS episode "Balance of Terror", it had nacelles but was only capable of moving at impulse.
Really? Because it covers distances in time frames only possible if it is capable of FTL flight (@ Wf2). Scotty's line concerns "power", not the drive. A steamship and an Arleigh Burke
-class destroyer might use propellers for drive, but a gas turbine engine has a lot more get-up-and-go than a steam boiler. The difference between a M/AM reactor and an impulse fusion reactor would be even greater.