 The Germans had a handful of very long-range Focke-Wulf Fw 200 Condor aircraft based at Bordeaux and Stavanger, which were used for reconnaissance.The Condor was a converted civilian airliner – a stop-gap solution for "Fliegerführer Atlantik".Due to ongoing friction between the "Luftwaffe" and "Kriegsmarine", the primary source of convoy sightings was the U-boats themselves.