e1dcd036b604441992ed519d09f7dbe1 eng series Forewind Ltd +44 (0)800 975 5636 Davidson House, Forbury Square Reading RG1 3EU United Kingdom info@forewind.co.uk http://www.forewind.co.uk/ pointOfContact 2013-01-18 MEDIN Discovery Profile 2.3.6 urn:ogc:def:crs:EPSG::4326/3395 2012, Brown and May Marine Ltd, Zone 3 Dogger Bank Tranche A and B, Sandeel Survey 2012-06-30 publication BMM DBSS01 GIS documentDigital tableDigital The aim of the survey was to provide a broad scale assessment of the sandeel distribution across Tranches A and B of the planned Dogger Bank offshore wind farm; establishing the abundance, species composition and distribution of sandeel species within the area. In addition, the survey objective was to define the east-west boundaries of the areas of high sandeel densities along the western boundary of the Dogger Bank Zone and in its central area as implied by Danish sandeel fishing activity, defined by VMS satellite tracking and by Jensen et al. (2011).This was undertaken between the 22nd March and 1st April 2012. A conductivity temperature and depth (CTD) probe was also used to record temperature and salinity depth profiles at every tenth station(weather permitting). The times, co-ordinates, depths and locations of each deployment of the CTD probe are given in the Sandeel survey report. 47 tows of approximately 250m were undertaken within Tranche A, 20 tows were undertaken in Tranche B and a further 43 control tows were undertaken in adjacent areas Sandeels require the presence of a specific substrate in which to burrow and it is understood that sandeel distribution and spawning grounds will occupy discrete patchy areas rather than be continuous throughout the Dogger Bank Zone. As such the sampling effort was primarily concentrated over known fishing grounds, with areas outside these being sampled less intensively. This series contains a survey report and GIS shapefiles Forewind Ltd +44 (0)800 975 5636 Davidson House, Forbury Square Reading RG1 3EU United Kingdom info@forewind.co.uk http://www.forewind.co.uk/ custodian Brown & May Marine Ltd. 01379 870181 01379 870673 Progress Way, Mid Suffolk Business Park Eye Suffolk IP23 7HU United Kingdom marine@brownmay.com originator Brown & May Marine Ltd. 01379 870181 01379 870673 Progress Way, Mid Suffolk Business Park Eye Suffolk IP23 7HU United Kingdom marine@brownmay.com processor asNeeded ESRI Shapefile ArcGIS 10 Marine Environmental Data and Information Network Fish SeaDataNet Agreed Parameter Groups 2011-07-28 revision 21 Fish behaviour SeaDataNet Parameter Discovery Vocabulary 2012-07-18 revision 75 Feasibility The Crown Estate Renewable Energy Development Phases 2012-05-15 revision 1 Consenting The Crown Estate Renewable Energy Development Phases 2012-05-15 revision 1 Zone search area The Crown Estate Renewable Energy Development Areas 2012-05-15 revision 1 copyright copyright Restricted Public Access Restricted Public Access eng biota environment oceans Charting Progress 2 Sea Areas 2009-06-18 creation Southern North Sea 1.2 3.3 54.7 55.3 2012-03-22 2012-04-01 series A modified 1.24m shellfish dredge with a fixed tooth bar (6" teeth) 10mm mesh and an 6mm mesh cod-end liner was used for sampling (Figure 5.2), the specifications of which are given in Table 5.2. The dredges, steel bellies and nets were manufactured using the specifications obtained through consultation with H. Mosegaard (DTU Aqua) and at a meeting with MSS, with the gear technician responsible for constructing the sandeel dredges used for MSS survey works. Modified 1.24m Shellfish Dredge Specifications Towing warp Steel 14mm main with 24mm extension Depth: payout ratio approx. 3/4:1 Net 10mm mesh with 6mm cod end liner and chain mat Estimated headline height 0.5m Dredge width 1.24m Tooth length 6" The position of the vessel was tracked at all times using a Garmin GPSMap 278 with an EGNOS differential connected to an external Garmin GA30 antenna. Dredge start times and positions were taken when the winch stopped paying out the gear. Similarly, dredge end times and positions were taken when hauling of the gear commenced/ GPS data downloaded in ArcGIS v10.0 and feature classess created for dredge location, CTD probe depolyments, catch rate and vessel track. Survey Vessel Specifications Length 21.2m Beam 6.9m Draft 2.3m Main engine Caterpillar Type 340TA 475 BHP Gearbox Hydraulic 6: reduction Propeller 4 Blade Manganese Bronze Fixed Pitch 1.7m diameter GPS 2-Furuno GP80 Plotters Sodena Plotter with Electronic Charts Sounder Furuno Daylight Viewing https://www.marinedataexchange.co.uk/details/2500/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site.