Norwegian Mapping Authority Hydrographic Service

As Norway's nautical chart authority, the Norwegian Mapping Authority Hydrographic Service has a national responsibility to collect, manage and distribute bathymetric data.

The Norwegian Hydrographic Service's marine geospatial data:

  • Digital terrain models. Regular grids: 5x5 meters, 25x25 meters and 50x50 meters
  • Marine primary data
  • Hydrographic survey data
  • Batymetric data
  • Depth conture lines
  • Charts, raster format, georeferenced

Data inside the territorial limit of 12 nm are subject to military restrictions. 

The Norwegian Mapping Autority's map catalogue

An overview of MAREANO map layers and data from the Norwegian Mapping Autority, available through

Order data

To order marine geospatial data, contact the Norwegian Hydrographic service at or tel. +47 32 11 80 00.