 The ship used Harvey armour throughout. Her waterline belt was 7.9 inches (200 mm) thick over her machinery spaces. Fore and aft, it reduced to 3.9 inches (100 mm). The upper armour strake and the armour protecting the casemates was 2.4 inches (60 mm) thick. The thickness of the armoured deck was 2 inches (50 mm); over the central battery it was a single plate, but elsewhere it consisted of a 1.2-inch (30 mm) plate over two 0.39-inch (10 mm) plates. The gun turret sides were protected by 5.9 inches (150 mm) of armour and their roofs were 1.2 inches thick. The barbettes were protected by armour plates 6.7-inch (170 mm) thick. The sides of the conning tower were 6.3 inches (160 mm) thick.
