Dornier Flugzeugwerke
The "Reichsmarine" supported a small naval air program. Designing firms Heinkel and Dornier Flugzeugwerke were contracted to produce seaplanes and naval aircraft. Ernst Heinkel's Heinkel He 1 and Claude Dornier's Dornier Wal were among the most effective seaplanes of the 1920s. One advantage for the navy was the allowance of a large anti-aircraft force. The navy could use aircraft for towing and exercises which enabled it to conduct a more open program of aircraft development in contrast to the army. Zenker felt it unnecessary to join the army in clandestine development programs in Russia. In the early 1920s the navy spent one-sixth of what the army spent on aviation.