Thanks to the TNG tech manual (not to mention seven years of TNG!) we probably know more about the Galaxy class than any other ship. As a result, there's a lot of canon and backstage info on the specs page here.

Last updated : 25th February 2000.
This page is Copyright Graham Kennedy 1998.

Star Trek et al is Copyright Paramount Pictures 1996/97.
No Copyright  infringement is intended and this page is for personal use only.
All  of the above classes of star ships and all of the
named ships are copyright Paramount 1996/97.