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Miscellaneous Notices to Mariners

2 About Etterretninger for sjøfarende

The Norwegian notices to mariners, Etterretninger for sjøfarende (Efs), is published twice a month. The Efs provides information on changes or defects in aids to navigation, discovery of new dangers and on shortcomings in Norwegian charts or publications, navigational warnings, gunnery exercises or other information of interest to mariners. I addition to temporary (T) and preliminary (P) notices in Norwegian waters.

The complete pdf editions of the Efs are accepted as an official Norwegian "notices to mariners" by the Norwegian Maritime Authority, on the same terms as the former printed Efs.

The Efs and tracings are available, free of charge, through the digital Efs service,

2.1 Professional users

Users are responsible for downloading the latest pdf edition of the Efs on

2.2 Digital Efs Service

The digital Etterretninger for sjøfarende (Efs) service has made it possible for the users to easily search for chart corrections and notices for each of the Norwegian charts. Searches can be saved for your next visit on the site. The Efs editions and tracings are available for download, free of charge.

It's possible to search for notices published in the Efs back to 2010. Please note that errors may occur in older notices, then it's the pdf edition of the Efs that's current.

Notices published before 2010 are only available through the pdf editions of the Efs.

2.3 Efs – Contents

All published information and chart corrections in the Norwegian Notices to Mariners, Etterretninger for sjøfarende (Efs) refer to the latest edition of the chart.

Contributors of nautical information to the Efs

The main contributors of nautical information to the Efs, can be divided into three groups:

  • Government agencies such as: The Norwegian Coastal Administration, The Norwegian Public Roads Administration, The Directorate of Fisheries, Port Authorities, and local municipalities. Typical data are lights and aids to navigation, bridges, fish farms, quays, fillings and moles, etc.
  • Private entrepreneurs constructing new or making changes to existing infrastructure which may affect the safe navigation at sea. This includes new/modified quays, marinas, moles, marine farms, fillings, overhead cables, submarine cables, etc.
  • Private companies or persons making constructions at sea that are not relevant for safe navigation, but where the object can be damaged by anchoring or by fishing activity, such as submarine pipelines, cables or oil-related equipment on the seabed.

The charts affected by a notice are listed in the notice heading and is repeated in the bottom of the notice. A star (*) adjacent to the number of a notice indicates that the notice is based on Norwegian original information. Chart corrections are translated into English. Other notices of importance for the navigation are translated into English in a shortened version.

The contents in Etterretninger for sjøfarende (Efs) are sorted by

All corrections of significant navigational importance and other temporary (T) and preliminary (P) notices regarding sailing in Norwegian waters are announced in the Efs:

Information about Norwegian charts and nautical publications
Read more about charts and publications in chapter 1.

Permanent chart corrections for Norwegian Waters and ocean areas
New lights and amendments to existing ones
Fixed and floating navigation aids
Newly identified shallows
New or amended submarine cables and pipelines
Overhead structures
Wrecks or obstacles

Temporary (T) and preliminary (P) notices for Norwegian Waters and ocean areas
Planned or amendments at light and navaids.
Light and navaids temporarily out of order.
Planned or amendments in ports and fairways
Warnings of planned discontinued light and navaids
Marine site surveys

Miscellaneous notices
Gunnery exercises, warnings, seismic surveys and information regarding any orders and regulations regarding sailing in certain areas

In addition will information about quality in Norwegian charts, chart date etc. be repeated at regular intervals.

Regions in the Efs

The contents in search and chaptering in the Efs pdf edition are arranged in the following areas: Norwegian Waters, the North Sea, Skagerrak, Kattegat, North Atlantic Ocean, Norwegian Sea westwards to Iceland, Arctic Ocean – the Barents Sea to Greenland, and Svalbard.

Within the area Norwegian Waters, the notices are sorted by their area, prior to their respective chart numbers.

See illustration of the Norwegian Coastal Areas (pdf, 180 kB).

See illustration of the Norwegian Ocean Areas  (pdf 344 kB).

Temporary (T) and Preliminary (P) Notices

A Temporary (T) Notice to Mariners is used to promulgate navigationally significant information that will remain valid only for a limited period. All T notices which have an indicated time will not be repeated unless any changes in time or other important changes.

A Preliminary (P) Notice to Mariners is issued to promulgate navigationally significant data early that is of importance to navigation and which in the future will result in a permanent chart correction.

These notices are indicated by (T) or (P) before the notice number, the charts will not be corrected, but an ECDIS revision (ER) are available for Electronic Charts. All active T and P notices are available on the Efs Internet service,


Positions are given in World Geodetic System (WGS84 DATUM) in degrees, minutes and decimals of minute.
Bearings are true, reckoned clockwise from 000° to 360°.
Light sectors: Bearings referring to a light sector are given in true degrees as observed from sea.
Distances are given in meters (m) or nautical miles (M).
Depths and heights are given in metres.


The publication Symbols and Abbreviations on Norwegian Maritime Charts provides an overview of symbols and abbreviations used for Norwegian nautical charts. The text is in both Norwegian and English.

2.4 Nautical Publications

Norwegian nautical publications, in addition to the Norwegian notices to mariners, Efs:

«All ships shall carry adequate and up-to-date charts, sailing directions, lists of lights, notices to mariners, tide tables and all other nautical publications necessary for the intended voyage.» (See SOLAS Consolidated Edition, Chapter V, Regulation 27).

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