 The sloped armoured deck ranged in thickness from 2.5 to 4 inches (64 to 102 mm) on the flat and slopes, respectively. The casemates were protected by 6 inches of Harvey armour while the gun shields had 2 to 4.5 inches (51 to 114 mm) of armour. The conning towers were protected by 12-inch (305 mm) walls and their roofs were 2 inches thick. The tubes protecting the ammunition hoists were also 2 inches thick.
