88957a57-7df0-470c-a15e-3e47a044c63c English series series 2026-08-11T12:10:44 MEDIN 3.1.2 oceans Seabed photography SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Sediment acoustics SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Bathymetry and Elevation SeaDataNet Parameter Discovery Vocabulary 2026-06-19 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 Offshore Cable Corridor The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2009-07-31 revision 40 SeaDataNet sea areas 2012-11-07 revision North Sea SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision soil and sediment boundary layer 2009-06-30T00:00:00 2009-09-12T00:00:00 0.36 0.5 53.11 53.22 TCE-1078 Marine Data Exchange 2009, EMU Ltd, Lynn and Inner Dowsing, Hydrographic Monitoring Survey Hydrographic Monitoring Survey 2021-05-17T13:50:26 publication English Emu Ltd conducted a series of hydrographic and geophysical monitoring surveys for Centrica Renewable Energy Limited at the Lynn and Inner Dowsing wind farm sites, primarily from 30 June to 26 July 2009, with additional ecological sampling in September 2009 and comparative surveys dating back to 2007. The purpose was to assess and map seabed habitats, particularly focusing on the extent and nature of biogenic features such as Sabellaria spinulosa reefs and Mytilus edulis (blue mussel) beds, in accordance with ecological and statutory monitoring requirements. Methodologies included swath and multibeam bathymetry, sidescan sonar, high-precision GPS, drop-down video and photographic analysis, sediment grab sampling, and laboratory analysis, with data validated by field verification and processed using advanced geospatial software. Key findings confirmed the presence of Sabellaria reefs (including borderline, low-lying features), patchy and non-reef Sabellaria occurrences, seed and old mussel beds, Ampelisca diadema aggregations, and varied sediment types, with survey results generally consistent with previous years and highlighting the dynamic nature of these habitats. Corresponding Centrica Document Title: Lynn and Inner Dowsing Hydrographic Monitoring Survey Available Datasets and supporting documentation: 1.GIS layers and MXDs; 2.Images(.jpg) ; 3.Videos ; 4. XYZ(.txt); 5. Documents and plots (.pdf) 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 Emu Limited (Fugro EMU Limited) Project Surveyor n/a originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor XceCo Limited ask@xceco.co.uk owner notPlanned Image Text or Plaintext https://www.marinedataexchange.co.uk/details/TCE-1078/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 hydrographic survey was carried out using the vessel FPV Morven on a 24 hour operational basis simultaneously using the below Sensors : A fully motion aided Reson 8101 multibeam echosounder A Klein 3000 sidescan sonar system An Applanix POS MV precision attitude and positioning system The drop down video and grab survey was conducted using the survey vessel Arie Dirk. Daily progress logs can be found in Appendix B. Methodology used to achieve the project objectives are Horizontal Positioning, Swath Bathymetry survey, Sidescan Survey, Multibeam Acoustic Backscatter Survey, Drop Down Video and Grab Survey and Video and Stills Data Analysis The Crown Estate enquiries@thecrownestate.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-12-12 revision WGS 84 / UTM zone 31N