Well to be honest, i used these models to make the comparisons and the renders:
http://www.scifi3d.com/details.asp?intGenreID=10&intCatID=8&key=302
http://www.scifi3d.com/details.asp?intGenreID=10&intCatID=8&key=534
http://www.scifi3d.com/details.asp?intGenreID=10&intCatID=8&key=517
 in this pic: 
The bridge is here, assuming the bridge is so big compare with the mass of the ship.
So a posibility is still here :)
-Angel