During the period from the 13th May to the 15th May 2021, BGR has operated Ocean Bottom Seismometers (OBS stations) in the German Bight during the project GeoBasis3D. In a phase without airgun operation for passive recording with 4.5 Hz geophones, the data were analysed. Furthermore, experiments with 3 broadband OBS systems have been made at the Darss ramp in the German Baltic Sea. The recorded data were analysed in the time interval from 23.01.2018 to 01.04.2018.