Report on the interrogation of survivors from U-664 sunk on 9 august 1943
German Naval Radio Intelligence ( B-dienst) The German Navy maintais an extensive radio intelligence organiation known as "B - Dienst ". U-664 is the first U-boat from which "B-Dienst" operatives have been captured.
During U-664 third patrol in the Nord Atlantic a radio electrician happen to overhear voice traffic on a wave lenght of 124.5 meters while using standard all-wave Telefunken receiver. Althougd nobody on board understood sufficient Englisch to makr the intercept worth while, it neverthless was established that this was convoy traffic.
Upon return from this patrol the observation was passed alog to the German Admiralty in Berlin where it was decided that U-664 would carry a radio intelligence operative on her next patrol to investigate the possibilities of intercepting convoy traffic.
A radio intelligence operativ named Dobberstein xas obtained from headquarters located St Andries near Bruges, Belgium. Dobberstein was assigned the rating " Artilleriemaat"
De twee toegevoegde operators na hun gevangenneming 9 augustus 1943
Op de U-boot 664 waren er operators werkzaam die hun opleiding gekregen hadden in het Hoofdkwartier te St-Michiels. Dit waren, Dobberstein - Doerell Peter en Dubbert Ernst.
In een ondervragingsrapport na het zinken van de U 664 in 1943 werd het volgende gemeld.
Inteerogation of survivors from U-664 sunk on 9 august 1943 German Naval Radio Intelligence ( B-dienst) U-664 is the first U-boat from with "B-dienst" operatives have been captured.
Personnel
Third patrol
A radio intelligence operative named " DOBBERSTEIN" was obtained from headquarters located St Andries near Bruges,Belgium. Dobberstein was assigned the rating "Artilleriemaat ( gunners mate 3rd). The purpose of thes was to confuse U-664's crew as to exact nature of this functions.
On return from his patrol on 8 June 1943, Dobberstein and the communications officer of the U-664 immediatly report to Berlin and turned over all material obtained.
Headquarters of the service are in the Castle Terlinden just outside the vollage of St Andries near Bruges, Belgium. The headquarters are connected with D/F stations at Ostends, Belgium, Maassluis, Holland and Le Touquet, France.
Two members of the headquarters ware replacing Dobberstein on board of the U 664. --- Dorell Peter and Dubbert Ernst
