The Galaxy class is a fictional class of starship in the science fiction franchise Star Trek. The most notable Galaxy-class starship is the USS Enterprise-D, the primary setting of Star Trek:The Next Generation.
The Galaxy-class model was designed by Andrew Probert for Star Trek: The Next Generation. Interiors were designed by Probert and Herman Zimmerman during the first season. Richard D. James designed and rebuilt the sets for the remaining six years, while Zimmerman returned for Star Trek Generations.
Within the series it is stated that design and construction of the Galaxy-class began in the 2340s, with the first ships being commissioned in the 2360s. According to dialog in the Next Generation episodes "11001001" and "Booby Trap", designers of the USS Enterprise-D included Orfil Quinteros and Leah Brahms. Star Trek creator Gene Roddenberry stated that only six Galaxy-class starships had been constructed;, in the Star Trek: Deep Space Nine episodes "Sacrifice of Angels" and "Favor the Bold" no fewer than nine are seen as part of a single "Fleet" and by this point in the series the Galaxy-class USS Enterprise-D, USS Yamato, and USS Odyssey had all been destroyed. The Star Trek: The Next Generation Technical Manual provides a possible canonical workaround by claiming that, while only six ships were ordered initially, Starfleet reserved the right to procure six more at a later date. Indeed it was likely a necessity given the increase in hostilities with the Dominion, the Klingons and the Borg as seen in Deep Space 9 and Star Trek: First Contact.
The ship's design features the classic Star Trek configuration: a saucer section connected via a vertical "neck" to the stardrive section, with warp nacelles attached to the rear of the stardrive section via pylons. The Galaxy-class contrasts with previous starships (specifically the Constitution class starship), however, in that the saucer section is considerably wider than it is long (instead of perfectly round); the nacelles pylons are roughly half the height of the ship's neck (instead of the same height); and the entire ship is designed with an emphasis on forward-leaning arcs (instead of a basic geometry of straight and parallel lines).