A three-seat general purpose biplane, the Three-Seater / D1 set a number of British altitude records in June and July 1913, in the hands of the by then Sopwith Chief Test Pilot, “Harry” Hawker. Of these the highest reached was 12,900 feet with one passenger. The Three-Seater could carry a 450 lb payload at 70 mph.
At least seven of these machines were known to have been operated by the naval wing of the RFC.
Engine: Gnome, 80 hp
Span: 40′
Length: 29’6″
Weight: 1060/1810 lb
Speed range: 40-75 mph
All Aero 