d5ce8848-5550-42c3-8693-84fef75f7329 English series series 2026-08-11T13:25:14 MEDIN 3.1.2 biota oceans Acoustic noise in the water column SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision Cetacean abundance SeaDataNet Parameter Discovery Vocabulary 2026-06-19 revision 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 Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaDataNet sea areas 2012-11-07 revision North Sea SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision unknown 2007-04-21T00:00:00 2007-11-25T23:59:59 0.429574612037093 0.490668789094874 53.1235139054851 53.2139573121939 TCE-1095 Marine Data Exchange 2007, RPS, Lynn and Inner Dowsing, Marine Mammal Observer and PAM Monitoring Marine Mammal Monitoring 2021-05-17T13:50:53 publication English Construction phase of the Centrica Renewable Energy Ltd’s (CREL) Inner Dowsing and Lynn offshore wind farms began in April 2007. As underwater noise generated during construction of wind farms - principally through pile driving - has previously been shown to be of physical risk to marine mammals in close proximity, and the area is known to be utilised by marine mammals, Natural England and DEFRA requested a procedure of mitigation measures against this potential damage. The basic principle of the MMMP was to ensure that no marine mammals were within 500 metres of the pile during the 30 minute period preceding the start of piling. To confirm their absence two marine mammal observers (MMOs), one of whom operated a passive acoustic monitoring (PAM) system, were to be stationed onboard a crew boat prior to all pile-driving operations. By conducting radial transect surveys around the point of piling the MMO’s could ensure that piling would not commence should marine mammals be detected in the 500 metres exclusion zone in the critical pre-piling period. In addition, a soft start was to be implemented for all piling events. 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 RPS Energy, Project Manager rpsenergy@rpsgroup.com originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor XceCo Limited ask@xceco.co.uk owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-1095/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 vessel used for the majority of marine mammal surveys, between 21/04/2007 and 12/11/2007, was the MV Sirocco. When this vessel was released from charter, the Windcat 7 was made available for remaining marine mammal monitoring. Both visual and acoustic methods were used to detect the presence of marine mammals in the vicinity of the pile. A team of two experienced marine mammal observers (MMOs) was present during the pile-driving operations, one of whom also operated a passive acoustic monitoring system (PAM). Visual observations were carried out prior to and during the pile-driving operations using the naked eye and binoculars. The PAM system was used to detect marine mammal vocalisations and its output was monitored by the PAM operator prior to the commencement of piling operations. Provided weather conditions and light levels allowed, visual and acoustic mitigation surveys were carried out prior to each pile-driving event. Had the weather or site conditions not permitted the survey vessel to transit to the site, the Fisheries Liaison Officer (FLO) on board the Resolution was responsible for undertaking visual MMO duties. In the event of pile driving commencing at night, only acoustic mitigation surveys were conducted. The Crown Estate enquiries@thecrownestate.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84