Scale: Unknown. Instructional sectional model depicting the fourth stage of making a wax hull for a tank testing model. It depicts the wax hull which has been altered by the shaping machine and shows a series of stepped waterlines along the hull. It is one of a series of five midship sections together with black and white photographs showing the stages in production of a wax tank testing model, all sharing the same glass and wooden display case: see SLR 2626, SLR 2897, SLR 2898 and SLR 2900. See SLR2626 for Chatham Storage measurements.