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View up to 300nm range AIS on your chartplotter.

The DataHub now delivers global AIS data to your chartplotter and nav apps, with Over the Horizon AIS (OHA)

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Stay safer with 300nm AIS visibility.
Increased Range

Stay safer with 300nm AIS visibility.

Over the Horizon AIS (OHA) increases your AIS range from as low as 5nm to 300nm! If you are sailing at 10 kt using regular AIS and a container ship is sailing directly towards you at 25 kt, you only have 8.5 minutes to react and alter course. On the other hand, OHA would provide you with 8.5 hours warning time.

Some chart plotters cannot display the full 300nm AIS range. For example, Garmin cuts off at 75nm.


Powered by the DataHub.

The DataHub has access to the entire global AIS network via your existing internet connection and knows your exact gps location. It then downloads all OHA vessel positions within 300 nm of your current location.

Powered by the DataHub.
Additional DataHub Features:
feature iconGPS Tracking
feature iconAutomated AI Polars
feature iconAnchor Alert
feature iconFirewall
feature iconGPS, NMEA & AIS over WiFi
feature iconOffshore Messaging
feature iconOptimized Email
feature iconBroadcast Internet
feature iconCollect & upload AIS Data
feature iconAutopilot integration
feature iconData Logging
feature iconRemote Support
feature iconBackup Communication Switching
Find out more about the DataHub
How does it work?

A world-first for AIS.

The DataHub downloads the OHA data approximately once every minute. It is then converted into NMEA and shared to your vessel's instrumentation over WiFi.

ais steps diagram
ais satellite diagram

OHA targets are displayed on your nav display in the same way as regular AIS targets. When a vessel is located via VHF and OHA, only the VHF data will be displayed.

OHA data can be downloaded via your existing Starlink, Iridium GO! exec or cellular internet connection.

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Never be without AIS.

OHA also works as a backup should your standard AIS receiver fail. Ensure you are never without AIS data, which is critical for collision avoidance, security, navigational safety and search and rescue.

ais vs oha
boats using AIS
To get Over the Horizon AIS working on your boat you will need a DataHub, and a Professional PredictWind subscription.
Get 300nm AIS visibility on your chartplotter now.
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