Hansa-Brandenburg W.11

A heavier and more powerful derivative of the KDW, the 1917 W.11 single-seat twin-float fighter biplane was powered by a 220hp Benz Bz IVa water-cooled engine and retained the "star" interplane bracing arrangement of its predecessor. Armament consisted of two synchronised LMG 08/15 machine guns, and two prototypes were completed during February-March 1917. No series production was undertaken.

Max take-off weight: 1233 kg / 2718 lb
Empty weight: 935 kg / 2061 lb
Wingspan: 10.10 m / 33 ft 2 in
Length: 8.10 m / 27 ft 7 in
Height: 3.32 m / 11 ft 11 in
Wing area: 31.42 sq.m / 338.20 sq ft
Max. speed: 176 km/h / 109 mph
Range: 350 km / 217 miles