In addition to the fast Hatch experimental boat, the R. N.L.I, is experimenting with another rescue craft - a craft designed by Mr. J. A. McLachlan, M.R.I.N.A., who served on the staff of the Institution as chief draughtsman from 1948 to 1958. An interesting feature of the boat is the positioning of the steering and engine remote controls in a semi-enclosed streamlined structure amidships. This allows the helmsman unrestricted movement, weather protection, and all round visibility, necessary when carrying out rescue operations in heavy weather. To obtain the maximum strength with the minimum of weight, the hull is moulded using three skins of mahogany to the builders' standard practice for high speed craft. The hull is subdivided into a number of watertight compartments, filled with polyurethane foam, comprising fore peak, aft wing peak side decks and beneath cockpit deck, giving an ample excess of positive buoyancy. Three water stability ballast tanks are fitted - forward, centre and aft..