hello, from the few pictures I have (basically the ones available at fas.org website
http://www.fas.org/nuke/guide/usa/slbm/ssbn-726_i.htm) it would seem that the fore part of the deck should be attached to the bow of the cylinder further to the front. The deck seems to be too large and the sides should start bending down a little bit closer to the centerline. Also in your model it seems (but I don't see it very clearly) that the turtle deck is too well connected to the cylindrical hull. The sides of the deck at the center of the boat should be close to vertical, degrading a little bit when moving fore and aft. The after part of the bridge should probably attached a little bit aft; the shape of the after part of the cylindrical body seems consistent to the (few) pictures available.
