Order Norwegian nautical charts

The Norwegian Mapping Authority has made the official charts more digitally accessibleand has stopped printing maps and charts for storage and sale. We now offer print-ready files that retailers print on request from the public. This means that our maps and nautical charts are available as Print on Demand maps and charts (POD). 

To buy the official Norwegian nautical charts, contact our distributors in Norway and abroad.

Norwegian Nautical Chart Series

The scale and content in the nautical charts is adapted to different shipping and user needs. These are the Norwegian nautical chart series:

Main Chart Series:

  • Consist of 143 nautical charts
  • Scale 1:50 000 (with a few exceptions)
  • Datum: WGS84
  • Covers the coast from the border with Sweden to Grense Jacobselv (the border with Russia), and parts of Svalbard.
  •  The Main Chart Series are charts primarily for navigation in inner coastal waters.

Harbour Chart Series:

  • Consist of 45 nautical charts
  • The scale varies from 1:5 000 to 1:25 000
  • Datum: WGS84
  • This series comprises charts on large scales of harbours and entrances along the Norwegian coast.

Coastal Chart Series:

  • Consist of 12 nautical charts
  • The scale varies from 1:200 000 to 1:350 000
  • Datum: WGS84
  • Covers the Norwegian coast from the border with Sweden to Grense Jakobselv (the border with Russia).

General Chart Series:

  • Consist of 12 nautical charts
  • The scale varies from 1:700 000 to 1:10 000 000
  • Datum: WGS84
  • The series comprises charts covering the North Sea, the Norwegian Sea, Svalbard, the Barents Sea, the Greenland Sea, Iceland, Eastern Greenland, the North Atlantic and Antarctica.
  • The charts form part of an International Chart Series under the International Hydrographic Organization's direction. They are marked with INT in addition to the international chart number.

Main Chart Series Svalbard, Jan Mayen and the Bouvet Island:

  • Consist of 18 nautical charts
  • The scale varies from 1:15 000 to 1:100 000
  • Datum: WGS84

Notices to Mariners

It is the responsibility of the users to update the nautical charts after the date of the last Norwegian notices to mariners, Etterretninger for sjøfarende (Efs). Changes of significant navigational importance are published consecutively in the Etterretninger for sjøfarende (Efs) every 14 days, which is available free of charge on kartverket.no/efs.

Nautical Chart Graticule

Over the years Norwegian nautical charts have been issued with various graticules. Up until 1957, Norwegian Datum was used, while charts produced between 1957-1992 are based on European Datum ED50. The graticule for charts produced after 1992 refers to WGS84. Today most of the charts refers to WGS84, but there are still a few charts referring to ED50 and NGO.

The quality of the old reference systems varies, and system irregularities have created problems for some user groups. The problems have increased in line with an increase in the quality of positioning systems. As the positioning accuracy when using new satellite systems can exceed the quality of the old reference systems, the Norwegian Mapping Authority decided to introduce a new satellite-based reference system in Norwegian waters from 1993.

WGS84 – World Geodetic System 1984

World Geodetic System (WGS84) replaced ED50 as the official horizontal reference system at sea. This is a worldwide international geodetic reference system without the major irregularities associated with the former systems. Positions from GPS-based systems can be used directly in charts with WGS84 graticule.

New nautical charts have WGS84 graticule, while reprints of older charts use their existing graticule. All charts since 1986 have a field stating the offset between ED50, alternatively NGO48, and WGS84. This difference will depend on the position, but the change is so slow that it can be assumed to remain constant within a sheet in the Main Chart Series.

The offset between ED50 and WGS84 will typically be in the order of 100 metres. On charts with Norwegian Datum, the difference between the chart graticule and WGS84 can reach 400-500 metres. With such a large difference between the graticules, it will be very important that the navigator takes this into consideration.