several stock footage shots of the Enterprise were interspersed with new model photography and CG imagery, notably during the captain's log segment and saucer separation sequence. Stock footage from the previous film was also used to depict the destruction of the Duras sisters' Bird-of-Prey, itself recycled from Star Trek VI: The Undiscovered Country " First I took a photo that showed the Excelsior in spacedock, did a rendering, and started putting add-ons on the ship. When I met with Mike [Okuda], he pointed out that we needed to design an area that protruded from the ship, so that the energy ribbon could whip out a section while leaving most of the ship intact. So we built a section of decks extended out from the main body, which tapers gently on the bottom and flares out dramatically on the stop. We also did a detail sketch of the area around the deflector dish , designating one area as the reactor room. The addition of the decks gave the B's belly section a look similar to that of a P.B.Y. Catalina (a flying boat of the 1940s). The added girth increased the overall size of the vessel, while still retaining the original Excelsior design. We made a few other changes, such as taking two fins off the top of the saucer, and putting in two major impulse engines (we figured these stronger engines would be needed when the saucer detached). As for the nacelles, we added a cap to them, plus a