While tinkering with an old BB design, I tried inputing numbers into the "bulge" fields on the armor page. That is apparently not functional at this time.
Other things I have noted are
Can not enter kg for shell weight, has to be pounds.
No gun placement option for side - grouped center as in SS2. This caused me some bewilderment on a carrier that was to have guns fore/aft of the island and I normally use that category.
Overall I think it's very nice, even just the beta version. I like the 2 gun "up" position , and the ability to subdivide the batteries....and a large number of other things. It really doesn't like destroyers, but you say that will get better.