British design for an armour-plated frigate of Mr. George Turner in 1864

The South Kensington Museum exhibited in 1889 a whole model of a proposed armour plated frigate designed in 1864 by Mr. George Turner late Master Shipwright of the Woolwich Dockyard (July 1950-1866). With an armament of 2 batteries of each 6 heavy rifled guns besides another 28 broadside uns and a length of 444 feet.

Source

Catalogue of ship models and marine engineering in the South Kensington Museum, 1889. No. 40.