2c06bd9e-5871-4eeb-96ac-88b8e4db5ae7 English series series 2026-03-16T16:17:42 MEDIN 3.1.2 oceans society Marine archaeology SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Side-scan sonar SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Sound velocity and travel time in the water column SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Bathymetry and Elevation SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Post-Construction monitoring The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Renewable Energy Lease area The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Cable crossing The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Offshore Substation The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Offshore Cable Corridor The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Elevation GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Geology GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaDataNet sea areas 2012-11-07 revision Irish Sea and St. George's Channel SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision soil and sediment SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision water column 2015-04-01T00:00:00 2015-04-19T23:00:00 -3.67077555367112 -3.44373295185234 54.0092642401199 54.1279117469857 TCE-2211 Marine Data Exchange 2015, Bibby Hydromap, Walney and West of Duddon Sands, Geophysical and Bathymetric Survey (2015-014B - WoDS) Geophysical and Bathymetric Survey (2015-014B - WoDS) 2023-09-04T15:34:19 publication English Bibby HydroMap were commissioned in April 2015 by DONG Energy to carry out a geophysical survey on a selection of areas located in the Walney Offshore Windfarm (WOW), and a bathymetric survey on the West of Duddon Sands (WoDS) windfarm. The survey comprises of mapping the seabed surrounding the offshore sub‐stations (OSS), a number of the wind turbines (WTGs), inter‐array cables, and associated export cables. The sites are located in Morecombe Bay, Irish Sea. The surveys were completed under existing framework terms and conditions, with some alterations. The survey were undertaken between 1st and 20th April 2015. This series contains reports/data relating to the West of Duddon Sands array and export cable route only. There will be no limitations when published on the Marine Data Exchange otherRestrictions Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian Bibby HydroMap Ltd +44 (0)151 328 1120 enquiries@bibbyhydromap.com originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Orsted Customer-questions@orsted.com owner notPlanned Database Documents Geographic Information System https://www.marinedataexchange.co.uk/details/TCE-2211/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08T00:00:00 publication Conformity with the Commission Regulation (EU) No 1089/2010 was either not relevant to this dataset or not a requirement of the Marine Data Exchange for the creation and submission of this dataset; therefore, conformity has not been assessed and cannot be declared False series The vertical datum used for all measurements was Lowest Astronomical Tide (LAT), as defined in the Project Scope, using the UKHO VORF model. QINSy was setup to apply the VORF LAT separation model to reduce the height observations of the CNav 3050 GNSS, which was receiving RTK corrections. This reduced LAT height was applied to multibeam soundings to calculate the reduced depth. A tidal data plot is presented in Appendix 2 to this report. The graph presents the applied tide heights as well as a comparison of heights against 3rd party tide data. 4.1.2 Processing Methodology The processed data files were gridded and reviewed in QINSy Processing Manager. The gridded surface was checked for data quality and accurate reduction in line with Special Order, and to ensure all ancillary data was applied correctly before Processing Manager was used to correct and filter bathymetric data. Data editing was completed using a combination of tools, including QPS Qloud and Fledermaus which all have a two‐way relationship with Processing Manager. This allows the bathymetry surface to update with the changes made by the processor, which enables real‐time validation of the data editing. Once cleaned, a combined surface of the multibeam data was generated at 0.5m bin resolution and used for the creation of seabed imagery and exports of XYZ files. The side scan sonar data was processed in Coda Survey Engine Mosaic+ software, allowing accurate picking of the seabed before applying a slant range correction and playing in to the mosaic. The navigation data recorded in the side scan data during acquisition was then filtered to remove any bad position fixes and create a smooth position interpolated for each sonar ping. A fixed layback was applied to account for the separation between the USBL beacon and towfish transceivers. The position of the side scan data was compared to the bathymetry to check that the position of significant targets match between the two datasets, within the specified tolerances. The data was enhanced in the mosaic window by applying TVGs and layering the data accordingly to create a final image of the seabed. The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84