5378a894-0ce4-44eb-9211-291eed34ccac English series series 2026-06-12T17:26:11 MEDIN 3.1.2 oceans Side-scan sonar SeaDataNet Parameter Discovery Vocabulary 2026-04-23 revision Bathymetry and Elevation SeaDataNet Parameter Discovery Vocabulary 2026-04-23 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 Elevation GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaDataNet sea areas 2012-11-07 revision English Channel SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision water column 2011-08-30T00:00:00 2011-08-31T00:00:00 1 2 51 52.5 TCE-532 Marine Data Exchange 2011, PLA Hydrographic Service, Gunfleet Sands 1 and 2, Export Cable and Wind Turbine Inspection Survey Export Cable and Wind Turbine Inspection Survey 2021-05-17T13:39:19 publication English The Port of London Authority (PLA) Hydrographic Service was commissioned by DONG Energy to undertake repeat Multibeam Echosounder (MBES) and Side Scan Sonar (SSS) surveys at the Gunfleet Sands Offshore Windfarm in the Thames Estuary. The previous survey having been undertaken during March 2011 – PLA Reference 113-500-142 Contract Q15/10. The surveys are required for the FEPA Licence Numbers: Gunfleet Sands 1 31919/09/0 and Gunfleet Sands 2 33723/09/0. The scope of work was as undertaken in 2010 which included: 1. MBES and SSS survey of 100m wide corridor along Export Cable Route between the windfarm substation and landfall site, to the east of Clacton-on- Sea. 2. MBES survey the seabed of an area 2400m x 100m around and between six adjacent turbines, namely A6 to F6. 3. For 2011, a requirement for additional works and analysis identified by DONG Energy, namely:- Volume calculations at each of the six turbine sites, difference surface charts at each turbine site, difference surface along export line, and comments on wider area geomorphology and bathymetric changes. 4. For August 2011 the scour around the substation was assessed and compared against previous surveys. This series covers survey elements which were undertaken on the 30th and 31st August 2011 around turbines A6-F6, and along the Export Cable Route.The survey work was carried out using the PLA survey vessel ‘Yantlet’, with bathymetric data being collected using a hull-mounted Reson SeaBat 8125h MBES and SSS extracted from the bathymetric data in the form of snippets and backscatter. 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 Port of London Authority Hydrographic Service +44 (0) 1474 562206 hydrographic@pla.co.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Orsted info@orsted.com owner notPlanned Database Delimited Documents Geographic Information System https://www.marinedataexchange.co.uk/details/TCE-532/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 survey is referred to the WGS84 Spheroid and ITRF2000 Datum. All coordinate positions refer to a Transverse Mercator Projection and UTM Grid Zone 31N. Orsted Data Manager info@orsted.com pointOfContact EPSG Geodetic Parameter Registry 2022-12-12 revision WGS 84 / UTM zone 31N