WMS service for electronic nautical charts. Includes the official electronic navigation charts (ENC). These electronic nautical charts are produced in accordance with the International Hydrographic Organization's (IHO) standard for the exchange of digital nautical chart information, S57. The WMS service is updated regularly.

The Norwegian Mapping Authority is prioritizing the publication of electronic navigational charts authorized for navigation. The international designation of such charts is ENC (Electronic Navigational Chart). Official electronic navigational charts (ENC) are vector charts produced in compliance with the specifications given by the International Hydrographic Organization, and are approved by a national hydrographic office. ENCs are produced in accordance with the International Hydrographic Organization's (IHO) S-57 standard, which is applied by all hydrographic offices world-wide for the production of corresponding electronic navigational charts for their waters. ENCs for the entire Norwegian coast are available through authorized PRIMAR distributors. Information about coverage and overview of distributors is available from www.primar.org.