Image: NOAA
What’s new: Another report on jamming and spoofing impacts to maritime, and an article on how maritime must adapt.
Why it’s important:
- 95% of the world’s trade moves by sea. Disruptions to maritime can have a global impact.
- Unlike aviation, maritime does not have an extensive set of terrestrial radio aids to complement GNSS.
- Also unlike aviation, maritime usually runs on razor thin profit margins so any loss of efficiency or increased cost has a major impact.
What else to know:
- AIS is the maritime equivalent of aviation’s ADS-B. It is used by ships to help prevent collisions and by authorities ashore to help manage traffic. Unlike aviation equipment, AIS is able to accept any navigation input, although at the moment GPS is used almost exclusively.
- See our “How to Steal a Ship” from 2017.
Hours-long GNSS interference reported in Strait of Hormuz
UK Maritime Trade Operations (UKMTO) has issued an advisory on electronic interference in the Strait of Hormuz area.
The UKMTO report dated May 18, 2025 claims that the GNSS interference lasted several hours and affected the navigation-related systems of vessels operating in the strait at the time.
Rethinking Navigation: The Spoofing Threat and the Future of Navigation at Sea
Karvi Rana
On May 10, 2025 the MSC Antonia, a 304 meter container vessel, ran aground near Eliza Shoals while enroute from Sudan to Jeddah.
Rethinking Navigation: The Spoofing Threat and the Future of GPS at Sea
