Half Model of an Ironclad Ram Ship

Half-model and half-model (starboard) of a ram tower ship. It has a ram bow, cruiser stern, rudder with a rounded rudder blade, a propeller shaft of a few screws: the propeller is missing. Two gun turrets and three masts on deck. The sheer is completely flat, the hull has an almost flat bottom with round bilges. A larger rudder blade is indicated on the backplate in pencil.