Bathymetry

The bathymetry was acquired with the Ship's ATLAS RUPP DESO 25. The water speed of sound was set to 1500 m/s. Digitised data were recorded by NAVPRO after correction for draught. Analogic data were recorded at the range 0-5000m. The model ADU-2 ASHTECH attitude measurement system and models OS-75 and WHM-3000 RDI ADCP current meters provided additional high quality positioning data, such as heading and speed, that were recorded on separate logging systems.