Model of a 3,000 tons warship proposed by mr. Turner of the Woolwich Dockyard and lent to the Victoria and Albert Museum in 1864

Model 57. Lent by Geo. Turner esquire. Fitted out with a central main battery with sloping sides, fore and aft gunfire via guns at the height of the spar deck behind a transverse semi-circular shield at each end of the broadside battery. This arrangement was to some extent used of later built built warships. Displacement 3,000 tons with as dimensions 210 (between perpendiculars) x 40 x 25 feet. Armament 8 hevay guns. Fitted out with a ram bow.

Source

Catalague of the Naval and Marine Engineering Collection in the Science Division of the Victora and Albert Museum, London, 1899.