Finding the concept uninteresting, Zimmerman designed a three-story circular set to give the impression the actors were inside a star map dominated by screens. Zimmerman's previous work designing a crisis management center influenced the design. The backlit starmaps that covered three-quarters of the wall would have been infeasible to create in the years before the rise of large-format inkjet printers and computer graphics software. The starmaps were replaced with a bluescreen for scenes where the static images would be replaced by computer-animated star maps by Santa Barbara Studios. Stellar cartography was one of the largest sets ever constructed on a Paramount lot. The film marked the first appearance of the starship Enterprise-B. The ship was a modification of the Excelsior, a model designed and built by Bill George and effects house Industrial Light & Magic (ILM) for Star Trek III: The Search for Spock a decade earlier. Co-producer Peter Lauritson, illustrator John Eaves, and Zimmerman designed the Enterprise-B with additions to its hull, some of which were added so that they could depict damage to the ship without harming the underlying model's surface, and to improve the look of the ship when it was filmed from angles called for in the script. The ship's bridge was based on previous designs for the Enterprise-A and Excelsior sets Zimmerman had created for The Undiscovered Country, using pieces from each. The surrounding spacedock for Enterprise maiden voyage was a modification of the model created for Star Trek: The Motion Picture (1979), refurbished and modified to better fit the film's anamorphic screen frame. Like Zimmerman, George took the opportunity of the Enterprise-D's screen debut to touch up the model. Because Generations featured the Enterprise-D separating into its saucer and engineering sections, the original model built by ILM for the television series was hauled out of storage. The ship was stripped, rewired, and its surface detailed to stand up to scrutiny. George changed the paint job, as he recalled they had been in a rush to prepare the model for television and its green-and-blue color scheme did not properly read on film. The paint scheme was shifted towards a "battleship grey", with glossy tiled areas reminiscent of the original feature film Enterprise. While Generations made use of new sets and props, set decorator John M. Dwyer reused existing props or made new ones out of premade materials where possible, rather than spend money on new