batch_auto_20260713 202607131256465730 BOEM ESP geoESPIS ESPIS@boem.gov Bureau of Ocean Energy Management Impact Assessment of Offshore Wind Turbines on High Frequency Coastal Oceanographic Radar CODAR ocean Sensors, Ltd. CODAR ocean Sensors, Ltd. The spinning blades of offshore wind turbines cause interference with high-frequency radars (HFR). The first five offshore wind turbines in the USA were installed in 2016 off Block Island, Rhode Island, near six coastal oceanographic SeaSonde HFR. This study is aimed to understand the impact of these wind farms on the national costal HFR network, and to develop techniques that mitigate the impact of turbine interference on all the radar data products. 476684 U.S. Department of the Interior, Bureau of Ocean Energy Management, Environmental Studies Program https://doi.org/10.13039/100012475 M0120C0002 10.67297/9A1E92 https://boem.gov/awardpages/100370