Unnamed proposed central battery and turret ironclad
Scale 1:48. Plan shows the proposed sheer lines, body plan and longitudinal half breadth for a unnamed central battery and turret ironclad. This plan has been signed by Francis B. Austen. The tile of this plan is 'Design for a twin screw armour plated frigate of 3749 tons and 800 HP to carry 8 9 inch broadside guns and 2 9 inch turret guns'. The paper the plan is drawn on is very fragile.