Before you start
Make sure your device's GPS is enabled and that location permissions are granted to the MarineTraffic app. Without this, the ETA cannot be calculated.
To check on iOS: Settings → Privacy & Security → Location Services → MarineTraffic → set to While Using the App
To check on Android: Settings → Apps → MarineTraffic → Permissions → Location → set to Allow while using the app
Where to find it
From the map, tap on any vessel to open its details page
Tap the Current position tab
Scroll down to the Vessel position section
You will find the ETA to my location displayed alongside the Distance from me value
How is the ETA calculated?
The ETA to your location is estimated using three factors:
Factor | Details |
Vessel's current speed | The speed over ground as last reported via AIS |
Vessel's current course | The direction the vessel is currently heading |
Your GPS location | Your device's real-time position |
The result is an estimated date and time of arrival of the vessel at your current position.
Important limitations
The ETA is indicative only — it assumes the vessel maintains its current speed and course without any changes
It does not account for route deviations, stops, speed changes, or port calls
Always cross-reference with the vessel's last AIS update timestamp to confirm the position data is recent