Scale unknown. Sectional model depicting a proposal by Sir Robert Seppings for the keel for a warship, showing keelson and floor timbers. The model has been made from wood and stained and varnished. A section of ten frames are depicted together with their filling frames, which are held in place by the keel, keelson and six short sections of planking. The model is inscribed "11", painted on the facing edge of the foremost frame. One frame has been inscribed "B7".