Out of curiosity, is there any particular reason, in the Star Trek canon, for the engine nacelles to be set out from the ship like that? I mean, it seems common to ships of the Federation (aside from the Defiant in DS9) but it also seems like a pretty significant liability for a ship in combat. I may be over-thinking this.

That aside, this is very cool. I like taking a break from my fantasy mapping endeavors to duck in here and ogle the space-ships.