An electronic navigational chart or ENC is an official database created by a
national hydrographic office for use with an
Electronic Chart Display and Information System (ECDIS). An electronic chart must conform to standards stated in the
International Hydrographic Organization (IHO) Publication S-57 before it can be certified as an ENC. Only ENCs can be used within ECDIS to meet the
International Maritime Organization (IMO) performance standard for ECDIS.
ENCs are available for wholesale distribution to chart agents and resellers from Regional Electronic Navigational Chart Centres (RENCs). The RENCs are not-for-profit organizations made up of ENC-producer countries. RENCs independently check each ENC submitted by the contributing countries to ensure that they conform to the relevant IHO standards. The RENCs also act collectively as one-stop wholesalers of most of the world's ENCs.
IHO Publication
S-63 developed by the IHO Data Protection Scheme Working Group is used to encrypt and digitally sign ENC data. Chart data is captured based on standards stated in IHO Publication S-57, and is displayed according to a display standard set out in IHO Publication S-52 to ensure consistency of data rendering between different systems.
IMO adopted compulsory carriage of ECDIS and ENCs on new high speed craft from 1 July 2010 and progressively for other craft from 2012 to 2018.
See also
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Inland Electronic Navigational Charts
Inland Electronic Navigational Charts (IENC) are electronic navigational charts for rivers, canals, lakes and other inland waters which are navigable. IENCs are displayed by an Inland Electronic Chart Display and Information System (Inland ECDIS).
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Raster Navigational Charts (NOAA)
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Navionics
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C-MAP
Navico is a marine electronics company providing navigation, marine instruments and fish finding equipment to both the recreational and commercial marine sectors.
The Navico Recreational Marine Division is one of the world's largest provider of ...
References
WEINTRIT Adam: The Electronic Chart Display and Information System (ECDIS). An Operational Handbook. A Balkema Book. CRC Press, Taylor & Francis Group, Boca Raton – London - New York - Leiden, 2009. ({{ISBN, 9780415482462), http://www.crcpress.com/product/isbn/9780415482462
External links
IMO Electronic Chart OverviewTransas Electronic Navigational Charts, World FolioInternational Centre for ENCs, one of two RENCs in the worldPRIMAR, one of two RENCs in the worldUnited Kingdom Hydrographic OfficeElectronic Chart Centre (ECC)Office of Coast Survey, has free download of ENCs for US.Inland Electronic Navigation Charts (US)Open Electronic Navigation Charts Directory
Electronic navigation
Navigational aids
Nautical charts