That could explain quite a lot.
In which case am I right to believe that the following leaves me with a twin 105mm at either end, 4 twin 25mm and 4 twin 13mm along the sides?
Armament:
4 - 4.13" / 105 mm 45.0 cal guns - 35.62lbs / 16.16kg shells, 300 per gun
Dual purpose guns in deck mounts, 1933 Model
2 x Twin mounts on centreline ends, evenly spread
8 - 0.98" / 25.0 mm 70.0 cal guns - 0.53lbs / 0.24kg shells, 300 per gun
Anti-air guns in deck mounts, 1935 Model
4 x Twin mounts on sides, evenly spread
8 - 0.51" / 13.0 mm 45.0 cal guns - 0.07lbs / 0.03kg shells, 500 per gun
Machine guns in deck mounts, 1933 Model
4 x Twin mounts on sides, evenly spread
Weight of broadside 147 lbs / 67 kg
Yes, it does.
It also means that they are all flat on deck level- meaning that all the guns are arranged along the same plane of fire. You'll get much better fields of fire if you elevate some of them.