Defra's Marine Digital Elevation Model (DEM) - 6 arc seconds

This dataset contains Digital Elevation Model (DEM) shapefiles for the waters surrounding the United Kingdom to a depth of 200 metres.

This resolution is 6 arc seconds which covers the widest possible geographic area. Geographic coordinates were used throughout and the DEM is referenced to the ETRS89 datum horizontally and Chart Datum vertically.

All input data was made available under licence by the UK Hydrographic Office (UKHO) to Defra for the purpose of DEM creation. Attribution statement: © Crown Copyright

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Last Updated September 11, 2025, 12:01 (UTC)
Created April 12, 2018, 10:32 (UTC)