Spectrum Geosurvey Limited was contracted to survey the northern half of the consented Race Bank offshore wind farm development site during spring 2015, prior to the project moving to the construction phase. The purpose of the survey was primarily to identify surface seabed features, objects and biogenic reefs that might affect the offshore installation works. Multibeam bathymetry and sidescan sonar data were acquired on board the Foryd Bay between 5th March and 12th May 2015. All reporting for this survey is contained entirely within this document. The detailed mobilisation and operational information relating to the survey fieldwork are included as appendices.