eddfd9da-2a96-4143-9ac7-b768d41377bd English series series 2026-03-30T13:32:49 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 Sediment grain size parameters SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Bathymetry and Elevation SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Feasibility The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Cable Landfall 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 Oceanographic geographical features 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 2013-02-08T00:00:00 2013-02-08T23:59:59 -5.0537 -3.6694 53.4913 53.9755 TCE-2691 Marine Data Exchange 2013, Halcrow Group, Zone 9 - Celtic Array, Horizontal Direction Drill Feasibility Study Horizontal Direction Drill Feasibility Study 2009-05-01T00:00:00 creation 2021-05-17T14:24:19 publication English Celtic Array Ltd previously contracted Halcrow Group Ltd (Halcrow) in October 2012 to undertake a horizontal direction drill- HDD Feasibility Study to assist with the development of the proposed offshore Rhiannon wind farm in the ISZ – Irish Sea Zone. In January 2013, Celtic Array requested Halcrow to undertake a review of the preliminary geophysical survey and drawings which were produced by EGS (International) Ltd in Autumn/Winter 2012 during the marine geophysical survey of the proposed Rhiaanon offshore windfarm on behalf of Celtic Array. Halcrow was to review the relevance of this Geophysical survey drawings to the Bull Bay site (7a) and Site 12 landfall areas. Halcrow Group Ltd prepared this Technical Note in accordance with the instructions of Celtic Array Ltd for their sole and specific use. Any other persons who use any information contained herein do so at their own risk. Available dataset: GIS in Shapefile formats ; AutoCAD data in dwg format (linked to R3 2012 Halcrow HDD Feasibility Study), reports and drawings in pdf formats. 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 Halcrow Group Ltd CERI@centrica.com originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Celtic Array info@celticarray.com owner unknown Documents https://www.marinedataexchange.co.uk/details/TCE-2691/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 Technical Note was produced in accordance with the instructions of Celtic Array Ltd for Celtic Array's sole and specific use. Any other persons who use any information contained herein do so at their own risk. As part of the geophysical review data obtained from the 2012 geophysical survey were compared with the results from the boreholes drilled in 1971 to the north of Amlwch It should be noted that the method by which the original seabed depths were obtained for the 1971 boreholes was not stated on the logs. The levels on the 1971 logs were provided to Ordnance Datum Newlyn (OD) and have been converted to Chart Datum (CD), which occurs 3.9m below OD. The values for the sediment thickness taken from the geophysical survey were interpolated from the nearest spot thicknesses to each borehole. Centrica Energy Renewable Investments (CERI) GIS and Data Manager CERI@centrica.com pointOfContact EPSG Geodetic Parameter Registry 2022-12-12 revision WGS 84 / UTM zone 30N