Thanks, guys. The large circular thing with all the crap inside in front isn't the navigational deflector, it wouldn't work because the section in front would block the force field thing it sends out that knocks meteors and crap out of the way. I figure that's the main sensor array. That was what Matt Jeffries had what would become the navigational deflector marked as on his Enterprise design, a sensor. (Just random facts thrown to make me sound like I know what I'm doing.
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Update: Added some stuff to the back.
