7cc81f5b-0a56-4977-95e7-f5686f85df15 English series series 2026-02-19T16:02:36 MEDIN 3.1.2 geoscientificInformation oceans Sedimentary structure SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Side-scan sonar 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 Operation and Maintenance 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 2017-09-07T00:00:00 2017-09-10T23:59:59 2.4464 7.8358 60.1699 63.6937 TCE-1056 Marine Data Exchange 2017, EGS, Lynn and Inner Dowsing, Post Construction Geophysical Survey Geophysical Survey 2021-11-19T14:40:24 publication English EGS (International) Limited (EGSi) were contracted by Siemens Gamesa Renewable Energy Ltd to undertake the 2017 post-construction geophysical survey of the L and ID OWF turbine locations, array cable and export cable routes. The main objective of the survey was to fulfil the L and ID Operations and Maintenance requirement by monitoring bedform morphology and scour around the turbines. Once published, there will be no limitations on public access. Data must be used in accordance with the Marine Data Exchanges Terms of Use which can be found on the website. otherRestrictions Once published, there will be no constraints on public access. Data must be used in accordance with the Marine Data Exchanges Terms of Use which can be found on the website. otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian EGS (International) Ltd EGS International Ltd Reporting Manager dassh.enquiries@mba.ac.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Siemens Gamesa Renewable Energy Ltd info@siemensgamesa.com owner notPlanned Delimited Documents Image https://www.marinedataexchange.co.uk/details/TCE-1056/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 Bathymetry 2025-11-27 revision This series has been Quality Assured so that it is compliant with the aforementioned MEDIN Guidelines and thus contains the mandatory components. In some instances, this compliance will not be feasible. True series Survey acquisition was carried out using the EGS Pioneer, which is permanently mobilised with a suite of hydrographic and geophysical equipment. The hull-mounted Kongsberg EM2040D Multibeam Echo Sounder (MBES), the Applanix POS MV 320 and the C&C Technologies C-Nav 3050 were calibrated and verified in accordance to the manufacturers’ guidelines in February/March 2017. A Sonardyne Scout Plus USBL system, mounted through the port moon tube, was mobilised to the vessel on 23rd June 2017. USBL calibrations and verifications were conducted on 24th June 2017. An Edgetech 42000 side scan sonar (SSS) and a Klein 3000 SSS were mobilised to the vessel whilst the vessel was alongside Grimsby Fish Docks, prior to commencing survey operations at the L&ID OWF. Following the completion of the alongside mobilisation, the vessel sailed to commence at-sea SSS position verification. On arrival at the L&ID OWF the Edgetech SSS system failed to communicate. The secondary SSS, Klein 3000, was connected and also failed to communicate. As both systems were operational whilst alongside Grimsby, problem solving commenced and identified the issue to be associated with the winch and hard tow termination. The issue was resolved and operations commenced at 15:52 on 7th September 2017. Survey data acquisition was completed on 10th September 2017 just as the sea state deteriorated to an unworkable condition The vessel subsequently transited to Grimsby and data QC was carried out alongside to ensure full data coverage. The data QC was completed at 10:00 on 12th September 2017 when the vessel was demobilised from the contract. Chelsea Bradbury The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-12-12 revision WGS 84 / UTM zone 31N