On the instructions of E.ON Climate and Renewables, Osiris Projects were commissioned to undertake a geophysical survey at the proposed Humber Gateway Wind Farm site. Unless stated otherwise, all co-ordinates quoted in this report are referenced to the WGS84 Datum. Grid co-ordinates are in the UTM Projection, Zone 31N, Central Meridian 3E. The survey was completed under Osiris Projects Terms and Conditions and was carried out between 2nd February and 6th March 2012. The Humber Gateway Windfarm Project is a Round 2 offshore wind farm development located in the northern part of the Greater Wash. The site is 8km east of the Yorkshire coast, near the Humber Estuary in north-east England. The main objectives of the geophysical survey were as follows: - To provide an accurate bathymetric chart of the site; - To chart natural seabed features and any obstructions, man-made objects, debris or wrecks; - To produce a comprehensive factual report describing methods and events within the survey; - To produce a comprehensive interpretative report on the survey results obtained to assist design of the offshore foundations / structures and cable burial; and - During the survey period, to identify items/areas of specific areas of interest and archaeology and inform the Client as required.