With 24 decks, it was equipped with the latest in equipment and defenses, including quantum torpedoes. It did not go into full service immediately, even for shakedowns. By stardate 50893.5 the ship had only been in space and fully crewed for nearly a year. Having plunged into a temporal wake near Earth created by invading Borg, it followed the Borg back to the twenty-first century and stopped them from preventing Zefram Cochrane’s pioneering warp drive test and first contact with the Vulcans.

If the ship is 88 meters in high the info says 24 decks that would be about 3.6 meters per deck or roughly 11feet this would allow space for ducting and electrical service between decks.