The performing of a non destructive geofysical research to ensure the localisation of airplane bombs on the water-bottom allong the quay walls.

Because of the presence of steel in the quay walls, the most common explosives detection-devices, like a magnetometer or electromagnetometer, were  not useable.

To gratify the supposed research goals, aDeDe has fulfilled a bottom research on this locations with the aid of a divingteam with underwater radar and a dragged sub-bottom profiler.