 From the top of the casemate protruded an armored lookout structure that served as a pilothouse, and one or two smokestacks.The casemate ironclad being steam driven, either by screws or by paddle-wheels, it did not need sails or masts, although sometimes, when not in combat, temporary pulley-masts, flagpoles, davits, and awnings were added.Inside the casemate, the guns were housed in one continuous deck.