Electronic Navigation Chart (ENC)

A digital database of maritime chart information designed for use with Electronic Chart Display and Information Systems (ECDIS) to support safe navigation at sea.

An Electronic Navigation Chart (ENC) is a critical tool in modern maritime navigation, providing a digital representation of nautical chart data that complies with the International Hydrographic Organization (IHO) standards. ENCs are vector-based, meaning they consist of data layers that can be selectively displayed or hidden, offering a dynamic and interactive way to view essential navigational information. These charts include details such as coastlines, depths, seabed composition, navigational aids, shipping routes, restricted areas, and other critical features that assist mariners in planning and executing voyages safely.

Unlike traditional paper charts, ENCs are designed for use with ECDIS, which integrates the chart data with real-time positional information from GPS and other sensors. This allows for automated functions such as route monitoring, collision avoidance, and alarms for hazards or deviations from planned courses. ENCs are continuously updated to reflect changes in maritime conditions, such as new obstructions, dredging activities, or alterations to navigational aids, ensuring that mariners have access to the most current information available.

The use of ENCs has become mandatory for certain classes of vessels under the International Maritime Organization’s (IMO) SOLAS (Safety of Life at Sea) regulations, underscoring their importance in enhancing maritime safety and efficiency. By transitioning from static paper charts to dynamic ENCs, the maritime industry has significantly improved situational awareness and reduced the risks associated with human error in navigation.