Walney Offshore Wind Farm Environmental Statement- Annex 4.1.1: Bathymetric and Geophysical Survey of Walney Offshore Wind Farm Site and Cable Route (WoDS relevant) series https://portal.medin.org.uk/portal/start.php?tpc=015_9b926af45187575f8146a91095ed6582 This project examines bathymetric and geophysical surveys undertaken at the site of the Walney and West of Duddon Sands offshore wind farms. OSAE conducted the survey for both wind farm sites from 29th January to 25th March 2005 to created a data base for the development of the wind farms. The main devices used during the survey on SV MERIDIAN were: - A SeaBat 8101 multibeam system - An Atlas DESO 25 single beam echosounder - A Boomer/Geoacoustics towfish 136 Pinger System -A Datasonics CAP 6600 Chirp II SBP - A Klein 3210 Side Scan Sonar; and - A Marine Magnetics SeaQuest 3D Gradiometer/Marine Magnetics 2D Explorer Gradiometer In the following, OSAE presents the results of the survey. Furthermore, this report specifies the processing steps of acquired data, details the specifications of used equipment, and gives a summary of the survey operations. Since the survey for both wind farm areas was carried out in a single offshore operation and since the wind farm areas adjoin at their boundaries, some elements of the survey cannot be assigned unambiguously to the one or the other wind farm area. Especially the operational data of the survey are not presented separately for each survey. However, the presentation of results in this report focuses on the Walney area. 20050510 20050510