The Hansa-Brandenburg W.12 was a German biplane fighter floatplane of World War I. Ernst Heinkel's KDW was redesigned, with a rear cockpit, reshaped tailfin, and rudder.

In April 1918, a W.12 made an emergency landing in the neutral territory of the Netherlands, where it was interned and flight tested by the Dutch.

In 1919 the government of the Netherlands bought a licence to build the aircraft.

35 W.12s were subsequently manufactured by the Van Berkel company of Rotterdam as the W-A, serving with the Dutch Naval Air Service until 1933.

Data from Encyclopedia of Military Aircraft[1]General characteristics Performance Armament