Optional use of ECDIS
track;
• Fix accuracy, or position check from secondary positioning system;
• Possibly, shiphandling options, based on ship's characteristics;
• Alphanumeric navigation information (ship's latitude, longitude, heading, course, etc.);
• Information from radar and other sensors,
• Information from AIS;
• Navigational indications and alarms generated by ECDIS;
• Possibly, telemetered information from shore authorities, (traffic, real-time tides etc.);
• Possibly, ice information;
• Reminders, (e.g. time to contact pilot station); and
• Possibly, a message from other displays (e.g. alarm on engine room display).
Because much experience is embodied in the paper chart, and to avoid confusion in the
extended period while paper charts and RNCs as compared to ENCs co-exist, the two
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