November 21, 1915 a Friedrichshafen FF.29 was interned near Schiermonnikoog and entered service as S-1. It was an unarmed scout trainer.
Due to an emergency landing it was damaged and withdrawn from use in September 1917. The engine was later used for the Friedrichshafen FF-19.
[Enclosed photo from BeeldBank NIMH. Click on photo for ordering information]