Topics: Electronic navigational chart, Navigation, Global Positioning System Pages: 2 (455 words) Published: April 15, 2011
Electronic Chart Display and Information System
From Wikipedia, the free encyclopedia

An Electronic Chart Display and Information System (ECDIS)

Electronic navigational chart (NOAA)
An Electronic Chart Display and Information System (ECDIS) is a computer-based navigation information system that complies with International Maritime Organization (IMO) regulations and can be used as an alternative to paper nautical charts. IMO refers to similar systems not meeting the regulations as Electronic Chart Systems (ECS).[1] An ECDIS system displays the information fromelectronic navigational charts (ENC) and integrates position information from the Global Positioning System (GPS) and other navigational sensors, such as radar and automatic identification systems (AIS). It may also display additional navigation-related information, such as Sailing Directions andfathometer. * |

ECDIS provides continuous position and navigational safety information. The system generates audible and/or visual alarms when the vessel is in proximity to navigational hazards. -------------------------------------------------

[edit]Electronic chart data
There are two types of electronic chart data.
[edit]Vector charts
Vector charts are the chart databases for ECDIS, with standardized content, structure and format, issued for use with ECDIS on the authority of government authorized hydrographic offices. ENCs are vector charts that also conform to International Hydrographic Organization (IHO) specifications stated in IHO Publication S-57.[2] ENCs contain 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). These supplementary information may be considered necessary for safe navigation and can be displayed together as a seamless chart. ENCs are...
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