- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
That part of a starship's hull that houses the warp drives -- usually an outboard pair of symmetrical cylinders or pods, and in Federation designs running parallel to the ship's line of flight.
The nacelles contain subspace field coils and in some cases have Bussard collectors mounted at the fore end.