Abstract
This report documents operations and environmental monitoring at the Belwind offshore wind farm during its ninth operational year. Key developments included the completion of the Edulis mussel farming project, with all equipment removed in July 2019, and ongoing environmental monitoring coordinated by MUMM. The facility underwent its 9-yearly maintenance service and completed a significant cable relocation project near the booster station. Environmental research continued with bird assessments, fish monitoring, and studies of fouling organisms. The report notes improved safety performance with no lost time incidents recorded and reduced vessel intrusions (4 cases) compared to previous years. Notable technical developments included the implementation of frequency monitoring on 20% of foundations to assess natural frequencies and potential resonance risks.