Hydrographic surveys

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Hydrographic surveys



From the co-ordinate triples obtained, a chart - the so-called topographic map of the sea floor - is produced using the programme system CARIS. Besides depth data, it contains the following information:

  • General information
    • co-ordinate grid (surveys and charts)
  • Quantities measured
    • depths
  • Quantities derived
    • depth contours
  • Additional information
    • coastlines
    • lettering
    • aids to navigation
    • underwater obstructions
    • fixed points

The following picture shows a section of this chart. The topographic map of the sea floor is normally, with a few exceptions, produced on scales ranging from 1:5 000 to 1:100 000. Its scale is at least twice that of the corresponding nautical chart. The analogue topographic map is produced in colour and black-and-white and can be bought via BSH distribution agencys. It is also available as PDF-File.

Cutout of a topographic map of the sea floor of Kiel-Friedrichsort


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 © 2016 Bundesamt für Seeschifffahrt und Hydrographie Last Update: 07-Dec-2015 08:20:10  
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