c546b2ce-11f0-4ec6-8510-96fef690ae71 English series series 2026-04-21T15:46:15 MEDIN 3.1.2 oceans 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 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 SeaDataNet sea areas 2012-11-07 revision English Channel 2012-03-23T00:00:00 2012-03-24T23:59:59 1 2 51 52.5 TCE-543 Marine Data Exchange 2012, PLA Hydrographic Service, Gunfleet Sands 1 and 2, Export Cable And Substation Inspection Surveys (Spring 2012) Export Cable And Substation Inspection Survey 2021-05-17T13:39:31 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. Previous surveys have been conducted at 6 monthly intervals from September 2010. The surveys are required for the FEPA Licence Numbers: Gunfleet Sands I & II (GF1L/2011/0064/9 & GF2 L/2011/00065/3) Offshore Windfarm. The scope of work, for the March 2012 survey, 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. For 2011, a requirement for additional works and analysis identified by DONG Energy, namely: - difference surface along export line, and comments on wider area geomorphology and bathymetric changes. 3. For August 2011 the scour around the substation was assessed and compared against previous surveys. 4. For March 2012 there was a requirement to delineate the full extent of scour from the substation. This series covers survey elements which were undertaken on the 23rd and 24th March 2012 along the Export Cable Route and around the substation. 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 DONG Energy Power (UK) Ltd receplon@dongenergy.co.uk owner notPlanned Documents Geographic Information System Text or Plaintext https://www.marinedataexchange.co.uk/details/TCE-543/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 This survey represents DONG Deliverable 717a. PLA’s MCA certified dedicated survey vessel, Yantlet, was used throughout the duration of the project for MBES work (Figure 2). The equipment on the PLA’s vessel is permanently fitted and regular calibrations of equipment are undertaken, including daily field checks. The PLA is ISO 9002 and 14001 certified and all QC documentation are held and available for review. Bathymetric sounding data is generated to IHO S44 Special Order level. DONG Energy Power (UK) Ltd Data Manager receplon@dongenergy.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-12-12 revision WGS 84 / UTM zone 31N