Canal / River Steam Grab dredger used to deepen canals. It was designed to place the grab with great precision, made possible by the boom which was raised lowered and slewed by the steam crane. The grab itself was opened closed by a special cylinder receiving steam by pivots in the boom. Used by many canal companies until the late 1960's. Complete with the crane, cabin and side pontoons (for stability and were removed to allow moving of the crane through locks) Kit is made from a one piece resin body with white metal crane and fittings 175mm (44ft) x 58mm Unpainted Kit