"Etterretninger for sjøfarende" ("Norwegian Notices to Mariners") is published twice a month and contains information which enables mariners to keep their charts and Sailing Directions up-dated.

In addition it contains information of importance to navigation, such as temporary changes, gunnery exercises, works in progress, closing of fairways etc.

Digital "Efs" is obtainable on E-mail as PDF file.

Mariners should be aware of the risks involved and the responsibility they incur by navigating in accordance with not up-dated charts.