 The Enterprise Torpedo Room and Spacelab transporter sets were  originally parts of the Klingon bridge built for  _Star Trek: The Motion Picture (1979)_ (qv). In order to save money,  shots of the Enterprise departing from dock, and in space, were  taken from the first Star Trek movie. The Spacelab model is that of  the orbiting space office turned upside down and with some cosmetic  changes from the first Star Trek movie. This movie was produced by  the Paramount Television division and released by the feature film  division, in order to avoid the $43 million cost of the first  feature film.