I used to like tapered armor

I am looking at the cross section for the Ger/BB/1905 design I did way back, and one of the things that is readily noticable is that the armor belt (lower and upper) is tapered. The lower belt, at the waterline, is 8ft tall and the greatest thickness is at the top. That was 11in and the lower edge was 9in, for an average of 10in. That was backed with wood, and had a 3in slope that angled to touch the lower edge of the belt. The upper belt was thicker at the lower edge, having 6in thickness at the top edge and 8in at the lower edge, for an average of 7in. The upper belt, and side, above that have a normal plating W/T bulkhead that is parallel, with a 3ft space behind, to limit flooding, if the outer skin or armor is pierced. The deck was unusual for me, in that there are only patches of thicker armor. The forecastle deck has 3in high tensil-strength steel (H.T.S) at the deck edge, about 8ft wide. At the main deck level, the deck is 1in H.T. steel, with a pacth of 3in H.T.S., about 10ft wide, set back about 7ft. The main deck is 1in H.T.S., with a 3in patch across the middle of the deck, about 45ft wide. The anti-torpedo protection is about 10ft deep, with layered bulkheads. There is a 2in H.T.S. bulkhead, inboard, with another layer to try to limit flooding, if that is breached. The boiler rooms are unbroken by bulkheads, to limit any tendency to listing.