The Oertz W 6 "Flugschoner" or "Flying Schooner" with tandem biplane wings and twin chain driven propellers powered by two Maybach engines in the hull. Information on this aircraft is difficult to come by. From a Russian website: The pusher propellers powered by two Maybach 240 PS (Hp) engines. The pusher propellers were mounted on a separate construction just behind the front wing. Although the machine was not very succesfull it was acquired by the German Marine under Number 281. The other Oertz flying boats were very elegant conventional biplane machines, this was the one out of the box. Probably another designer who wanted to try something a little different. At a later date mid-wing ailerons were fitted to the rear pair of wings to improve lateral control.