Miscellaneous Notices to Mariners
5.1 Electronic Chart Display and Information System (ECDIS)
ECDIS is a certified navigation system meeting SOLAS requirements to navigational equipment pursuant to certain criteria. If an ENC is installed on this type of system and kept updated, it may be used for navigation in the same manner as an updated paper nautical chart.
Other types of unofficial electronic charts, for example charts produced by private industry or raster charts, can only be used as a supplement for navigation.
The following back-up systems are approved for use on Norwegian vessels:
- Updated paper nautical charts, or
- ECDIS No. 2 connected to an emergency power source.
IMO requirements for mandatory use of ECDIS
The International Maritime Organization's (IMO) Maritime Safety Committee (MSC) approves provisions regarding the mandatory use of ECDIS, depending on the type of vessel and its size.