AIS traffic from the first second the chart opens. Free, no account needed.
Commercial ships and larger craft broadcast their position over AIS. Sirena Seafarer draws them on your nautical chart, coloured by type, with an arrow for every vessel under way. Tap one for its name, type and speed.
Most small pleasure boats carry no AIS transponder, so an empty sea on the screen does not mean an empty sea. AIS is an aid, never a replacement for watching the water and the radar.
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Sirena Seafarer is an aid to situational awareness. Use it alongside official charts and your own seamanship. Terms · Privacy