2009 Center for Environment, Fisheries and Aquaculture Science: Areas surveyed with multibeam to map the seabed habitat dataset https://portal.medin.org.uk/portal/start.php?tpc=010_5f49de0fd7d5c542e74c6aa8107081c1 Cefas collects multibeam bathymetry and backscatter data as part of seabed and habitat mapping surveys. These surveys are predominantly conducted as part of environmental assessments of human activities or in the context of the identification and assessment of areas of conservation interest. Cefas has the capability to collect multibeam data from its Research Vessel Cefas Endeavour, but data may also be collected by sub-contractors. Polygon areas represent approximate extents of survey data gathered. In some areas only data corridors were collected, rather than data for the entire polygon. Data are generally acquired for seabed characterisation and habitat mapping purposes. Surveys may not meet all requirements of the IHO Order 1 Standard. Surveys are generally reduced to Mean Sea Level (MSL). 20090406