Scale: not calculated. An interesting proposal for a twin-screw, twin-turret coastal monitor (circa 1880). The hull is an extraordinary lozenge shape with a flat bottom. The turrets, set widely apart at the fore and aft of the vessel, each have two guns. There is very little else in terms of deck fittings, three skylights and what could be a covered hatch cover. Despite the screws there are no funnels or any suggestion of an engine. Its sculptural shape is like nothing that ever existed in the late 19th century. The model came to the Museum from the Mercury Training School on the River Hamble.