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🗺️How can I calculate routes, distances, and ETAs between ports in the Fleettracker Chart?

The Route Calculation Tool in the Fleettracker Chart allows users to plan voyages between one or multiple ports. By entering ports, speed, and port stay duration, users can calculate distances (in nautical miles) and automatically generate estimated arrival (ETA) and departure times (ETD). The tool can be used with or without selecting a ship.

Overview of the Route Calculation Tool

The Route Calculation Tool is located at the bottom of the Chart view. It enables users to simulate vessel routes and calculate voyage details visually on the map.

From the screenshot:

  • The route is displayed directly on the map as a line between ports
  • The calculation panel appears at the bottom
  • Multiple legs can be added and adjusted dynamically

How to create a route

  1. (Optional) Select a vessel
    • Choose a vessel from your fleet using the dropdown
    • Alternatively, you can calculate routes without selecting a vessel
  2. Enter the start port
    • Type either:
      • Port name
      • UN/LOCODE
    • The system will auto-recognize the location
  3. Define voyage parameters
    • Speed (knots) → used to calculate sailing time
    • Time in port (hours) → used to calculate ETD
  4. Add additional ports (multi-leg routes)
    • Click the “+” icon to add the next port
    • Repeat for as many legs as needed
  5. Run the calculation
    • Click “calculate route”

Calculation results

For each leg, the system provides:

  • Distance → in nautical miles (nm)
  • Speed → as defined by the user
  • Time in port → as defined by the user
  • ETA (Estimated Time of Arrival)
  • ETD (Estimated Time of Departure)

These values are calculated sequentially, meaning each port builds on the previous leg.


Route visualization on the chart

  • The full route is displayed as a line on the map
  • Each leg is visually connected between ports
  • This helps users quickly understand voyage routing and geography

Route options (advanced settings)

Users can refine route calculations using additional options:

  • Minimize ECA (Emission Control Areas)
  • Avoid specific canals (e.g. Panama, Suez, Kiel)
  • Avoid ice areas
  • Other routing constraints

These options influence how the route is calculated and displayed.