Digital depth models
Interpolated models
Here you can find a series of depth models of Danish territorial waters. All these models are interpolated models, primarily constructed on the basis of data in the Danish Maritime Safety Administration depth database.
The interpolated depth models are divided into four areas covering the Danish EEZ.
The models have been constructed based on data from modern surveys together with older data that has been digitised from hydrographic base maps.
The models provide full coverage
There is a data value for every cell in the model. The cell value indicates the average depth obtained by interpolation between the data points. This produces an estimate of the sea depths for areas where there is very little data from surveys or none at all.
Cell resolution in the models
The data for Kattegat North, Kattegat South and Bornholm are produced in 50 x 50 m cells in ESRI grid format. The North Sea has been produced with 100 x 100 m cells.
All four models were calculated in the UTM zone 32 projection.
Each of the four areas has subsequently been interpolated in a cell definition of 4 x 4 seconds after transformation to geographic coordinates. These slightly less fine-meshed models have been used in the further production of the two graphic formats, kmz and sd, for use by Google Earth™ and the 3D viewer Fledermaus iView™.
In addition, data has been produced in 4 x 4 second definition in NetCDF format, for reasons including integration with other multidimensional oceanographic data.
The horizontal datum for all data is WGS84, and the vertical datum for the depths is DVR90 (Danish Vertical Reference) for the inner Danish waters and MLWS (Mean Low Water Spring) for the West Coast.
* You may download and install a free
Fledermaus iView viewer to see the 3D models.
Please note that none of the depth data above may be used for navigation, and that the Danish Maritime Safety Administration accepts no liability for any consequences of the use of the data. Whenever data or models from the Danish Maritime Safety Administration are shown, the Danish Maritime Safety Administration must be expressly acknowledged as the source.