The PRIMAR RENC provides a consistent and reliable Electronic Navigational Chart (ENC) service.
ENCs are produced by or on the authority of a government-authorised hydrographic office (HO) or other relevant institution. ENCs are based on the relevant HO's source data or official charts, and are compiled, coded and regularly updated in accordance with international standards.
The International Maritime Organisation (IMO) provides the following definition of an ENC: "ENC means the database, standardised as to content, structure and format, issued for use with ECDIS on the authority of government-authorised 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".
ENCs are issued for use with an Electronic Chart Display and Information System (ECDIS), which is a type of navigational electronic chart system for installation on the bridge of a vessel.