Bathymetry (OceanWise Marine Themes DEM)
This map layer is a Web Map Service provided by a third party. Data is automatically updated and made available by the data owners, but can be viewed in the NMPi portal. For detailed information about layers supplied by third parties, we recommend contacting the data owner directly
Marine Themes Digital Elevation Model (DEM) of the Seabed generated from single beam echo sounder (SBES) and multi beam echo sounder (MBES), where available, and Electronic Navigational Chart (ENC) or GEBCO derived data where not. The 1 arc second resolution data set is divided and supplied as 0.5 degree x 0.5 degree tiles. The 6 arc second resolution data set is divided and supplied as 2.0 degree x 2.0 degree tiles. The coastline used in the DEM is based on the High Water Line extracted the largest scale Electronic Navigational Chart (ENC) available for a given area, edited to be contiguous and attributed by height extracted from the Vertical Offshore Reference Frame (VORF).