2015, EGS, Inner Dowsing, ID16 and ID24 Turbine Clearance Survey series https://portal.medin.org.uk/portal/start.php?tpc=015_a9e5388d-b0d0-45e4-b3e2-03eb9725e3d0 EGS (International) Ltd, on behalf of Centrica, undertook a Side-Scan Sonar (SSS) and Multibeam (MBES) clearance survey centered on the no cable zones (500m by 500m) around WTGs ID16 and ID24 on the Inner Dowsing Site which is located in the southern North Sea, approximately 5km off the coast of Lincolnshire near Skegness. The areas surveyed were identified by Centrica for the upcoming works on the aforementioned turbines and respond to the need to have a jack-up vessel in the locality to complete the works. This report details the operations and results of the survey around all turbines. The work was to ensure the Jack-up vessel jacks up safely within the ‘No Cable Zone’ at each of the three turbines, a geophysical clearance was carried out over a 500m by 500m survey area centred on the No Cable Zone. The primary objectives of the survey were to: - Acquire bathymetric data with 100% coverage within the pre-defined survey area - Acquire side-scan sonar data with 100% coverage within the pre-defined survey area - Use the acquired side-scan sonar and bathymetric datasets to identify obstructions which could impede the arrival of the Jack-up vessel, specifically, existing Jack-up rig foot prints, significant objects and man-made features on the seafloor 20250919T12:39:58