electronic navigational chart

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1. An electronic navigational chart (ENC) is a subset of the electronic chart data base held on the vessel. It contains information on features useful for navigation such as coastline, obstructions, beacons etc.
2. The data base, standardized as to content, structure and format, issued for use with ECDIS on the authority of government authorized hydrographic offices. The ENC contains all the chart information necessary for safe navigation and may contain supplementary information in addition to that contained in the paper chart (e.g. sailing directions) which may be considered necessary for safe navigation.

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