I also wonder how at range 2.0km my 8.3" gun with pen value 26.9 at range 2.5km can't pen the 2.4" +53% Fore Belt (+no internal belt).  I know the angel of project make a big difference, but... When I use simply formula to calculate the penetration value, I got angel must be less than 10.5 degree (on that angel the armor thickness is ~26.9). On that angel the project should ricochet plus the ship is more like 80-90 degree in front of my projects... almost parallelly course. Someth