Scale 1:48. Plan shows the upper deck for a unnamed 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 "Plan of Upper Deck for a Paddle Wheel Steam Vessel of 80 H.P. and 460 Tons for service on the River Niger".