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.

Electronic Navigational Chart.

Electronic Navigational Charts

Entidad Nacional de Acreditatión

Eisenhower National Clearinghouse

Exceptional Needs Coordinator (Oklahoma SoonerCare providers)

Altitude Encoder

encounter The seven days (roughly) surrounding the targeted encounter's closest approach.

Air Traffic Control Encoder

Encoded (file name extension)

enclosed