Thematic map - Bottom types
Map information
The data set is taken from the Norwegian Geological Survey's map portal and consists of over 62,000 data points from Norwegian fjords and coastal areas. The data points have been collected by the Mapping Authority's sea division in connection with depth mapping. The data points give an indication of what type of bottom can be expected (for example, whether there are coarse-grained or fine-grained sediments). The distribution of sediments on the bottom is closely linked to the physical conditions and tells a lot about the underwater landscape, currents, wave washing and sedimentary processes.
The map below shows coverage for the data. Zoom in to see if there is data for your area. Click on the symbol in the upper right corner to see the map in full version at www.geonorge.no.
The map is taken from www.geonorge.no.
Downloadable map for Simrad, Lowrance and B&G
The downloadable map is compatible with a selection of maps from C-Map. The main category is "Bottom types" and the following subcategories exist:
The different bottom types are represented by dynamic icons as shown above. These are automatically scaled according to the zoom level on the chartplotter. The map layer can be switched on and off via the menu on the chartplotter. It is also possible to switch certain bottom types on and off, e.g. if you just want to see "sand" or "gravel".
Display of the map on Simrad NSS. Bottom type information can be displayed as a "tooltip" by highlighting the various symbols.
The theme map is available in the following versions (click on the download link):
NB! The maps available on this site are for personal use only at your own risk. They shall not be resold or otherwise distributed outside this site.
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