Numbers 404 and 405 were the sole two examples of a unique seaplane design produced for the flying service of the Imperial German Navy during the First World War.
[1][2][3] By 1917, the output of the major German seaplane manufacturers was taken up producing machines for front-line service.
[1] As a consequence, the only machines available for training purposes were those that had been made obsolete or which had been damaged and rebuilt.
[1] In order to provide modern trainers for the Navy, the Kaiserliche Werft Danzig undertook the design and construction of two brand-new seaplanes between March and June,[1] unarmed two-seat biplanes.
[3] These machines were supplied to the naval base at Putzig along with a batch of four trainers of a different design, numbered 467–470.