Hydrographic surveys for seabed site investigation of offshore wind farms in Zones 3 and 4 of the German North Sea exclusive economic zone in 2027 and 2028

Summary

The contract covers the performance and documentation of hydrographic surveys for offshore wind farms in Zones 3 and 4 of the German North Sea exclusive economic zone in 2027 and 2028. The work includes full-area multibeam echosounder surveys with backscatter recording, side-scan sonar surveys with ground-truthing by grab samples and video investigations, line-based magnetometer and sediment echosounder surveys, and local ROV video investigations to verify objects and suspected targets. The survey area must be examined within one continuous period. The submission deadline is 21 September 2026.