im sorry to say but you make a mistake with the south dakota ( or maybe im just very blind or its the camera angle which fail me ) but the south dakota only have 4 dual 5" turret on each side not 5, and they are set that way '. .' ( the ' is a turret over the . which is another turret 1 stage lower ) and if im not mistaken you set 5 turret this way '. '.-
so let me quote from wikipedia as in the secondary armement ( the dual 5" im talking about ) :
Because
South Dakota was built as a fleet flagship, the extra command and control space needed for these duties necessitated that the secondary battery be limited to sixteen 5-in (127 mm) 38 caliber
Mark 12 guns in eight Mark 28 Mod 0 dual mounts,
four on either side of the superstructure.
Its was the USS massachusetts, USS Alabama and USS indiana which had 5 turret, but those where late version, the USS South Dakota was basicly made for Flagship operation so needed space for their control that why only 4 turret
but correct me if im wrong
no personnal harm intend :P
or if you want to keep 5 turret youll have to compact them a bit :P
here 1 linik to picture of the USS massachusetts secondary armement :
http://upload.wikimedia.org/wikipedi...28BB-59%29.jpg
and one of the indiana:
http://upload.wikimedia.org/wikipedi...28BB-58%29.jpg
but if you cant make them more compact its nto a big deal, i dotn want too look like a nerd knowing everything, and i dont know how to mod, its was onyl some fact i was saying there