Andy, the superstructure has been widened a touch to allow for battery insertion (two 6v gel). As I was only making a stand off model, the plans I had were adequate..they are not really "plans" just layout drawings. To make a better model you would need plans such as you have bought.
6 inch turrets are of course missing on the partially completed hul, as per picture..is this what you mean ?? The turrets were also moved inboard very slightly to make them more damage resistant.
Ashley