Scale 1:48. Plan shows the sheer lines, body plan and longitudinal half breadth for a 160ft Paddle Steamer for service on the River Niger (1870). The plan bears the signature of Sir Edward Reed [Chief Constructor of the Navy 1863-1870] and Robert Spencer Robinson [Controller of the Navy 1861-1871]. The title of the plan is "Sheer Drawing for a Paddle Wheel Steam Vessel of 80 H.P. and 460 Tons for service on the River Niger".