Vessels are sending AIS signals to announce e.g. a new position. To get a time relative context, these messages contain besides the new coordinates a timestamp when the signal was sent. FleetMon processes these signals in a few seconds and displays them on the live map.

With signal age, filter settings can be refined. Transmitted AIS signals are displayed live on the map after a few seconds. The signal age is not older than 24 hours by default.

Note: If min and max on the slider are equal, the given setting + 1 minute is displayed, with Live everything up to one-minute signal age is shown on the Explorer.

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