Operation Bodden

(shallow bay separating the island of Rügen from the German mainland)

This was a German undertaking, supervised by the Abwehr, for the gathering of intelligence in Spain and Morocco (1937/43).

The ‘Bodden’ system comprised a network of coastal listening stations overseeing a seabed detection system laid across the Strait of Gibraltar. The undertaking’s object was the gathering of signals and other intelligence via the underwater detection system and 14 infra-red ship surveillance stations (nine in Spain and five in Morocco) which later relayed information about Allied shipping movements between the Atlantic and Mediterranean so that U-boats could make more effective interceptions and attacks.