REPMUS 2026: Hefring Marine showcases ODIN maritime domain awareness, USV safety systems
The Icelandic Coast Guard patrol ship Freyja during Exercise ‘Northern Viking 22' in the North Atlantic Ocean. Hefring's ODIN system has received interest from the service. (US Navy )
Icelandic company Hefring Marine showcased its ODIN (Observation and Domain Intelligence Network) system at NATO Exercise ‘REPMUS 26' (Robotic Experimentation and Prototyping with Maritime Unmanned Systems) which took place in Portugal from 31 August-25 September 2026. The company also integrated its Safety Speed system on unmanned surface vehicles (USVs) at the exercise.
Speaking to media at REPMUS on 22 September 2026, Michael Given, head of sales at Hefring Marine described ODIN as a distributed sensor node network that uses civilian assets, such as fishing vessels, to assist in maritime domain awareness tasks, including the detection of possible ‘shadow fleet' vessels.
The ODIN system consists of a computer processing unit (CPU) that can be connected to vessels. The system processes raw radar returns (but not manufacturer tracks) and automatic identification system (AIS) information from the vessel. Hefring's algorithm then identifies vessel returns from the radar and cross-references them with known AIS positions. ODIN then flags any mismatches where a radar contact does not have a corresponding AIS position. These contacts could be innocuous, such as a sailboat that has failed to turn its AIS on, or they could be Russian ‘shadow fleet' vessels, according to Given. During REPMUS 26, ODIN was integrated on USVs from New Zealand company Syos.
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