But your doing a refit of a BB and not starting at the begining to put in stern ramp. At some point you must stop to think just how much in real life the cost would be.

At some point you would be better off just to cut the ship off, passed the 16" turret and start fresh. At what point is the width just forward of the rear 16" and then do a square back to the rear! instead of a tapped end.

Think about how much more room there would be.