Navigation Tasks •
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• 19
Route Calculation
Route calculation for voyage planning includes following:
1. Route profile calculation
• Distance between consecutive waypoints
• Course between waypoints
• Calculation of wheel over point
• Total distance
• Estimated time for voyage
2. Route check
• Grounding alarm based on available depth information in digital chart data base
3. Voyage optimisation
• Time table optimisation
• Optimisation based on economical factors
• The ECDIS processor calculates optimum speed and course between each waypoint,
ETA and fuel consumption, based on the defined data. There are 4 calculation
strategies: Max. Speed, Timetable, Lowest Cost and Best Profit. In case of great circle
sailing between two waypoints the ECDIS calculates max. and min latitudes and if
needed adds an extra waypoint not to go over min or max. latitude.
Chart planning
1. Loading of new S57 and ARCS charts
2. Updating on existing S57 and ARCS charts
3. Handling of chart permits
4. Manual update
User Chart planning
1. User generated navigation charts
2. User defined chart alarms based on symbols, lines and areas of User chart
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