With Ernst Heinkel as chief designer, this company produced
the most important German
seaplanes of the First
World War, commencing with the KDW single-seater developed
from the D1 landplane, followed by the W.12 with
characteristic Hansa upswept fuselage and "upside-down"
tail arrangement. The W.29 monoplane
set the pattern for
Heinkel's later designs, outperforming Allied aircraft in
combat from introduction in April 1918. The larger W.33 was delivered before the Armistice, and continued in production
in Finland and Norway as the A-22 until the mid-
19208, as did the W.29 in Denmark.