sentences:  Constructed of metal, possibly steel tubing as opposed to bamboo in his earlier aeroplanes, although James Manson claims the tubing was duralumin.Its wings were of conventional design; the bracing struts were fitted with streamlined aerofoil shaped fairings, made from aluminium or wood and covered in fabric, canvas according to Manson, which was sewn into place by himself.Watson's big No.3 was powered by a British Anzani 45 hp six cylinder two-row radial engine.