The Threat Has Shifted from Denial to Deception
For years the main risk to satellite navigation was assumed to be jamming, the brute force denial of a signal. Jamming is disruptive, but it is usually visible, but the navigation picture degrades or disappears. Spoofing, however, is a tougher problem to solve. A spoofed receiver can keep reporting a plausible position with apparent confidence, even when that position is false.
That false certainty flows straight into the systems a bridge team depends on, from electronic charts and automatic identification to collision avoidance and voyage optimization. When the coordinate at the center of the screen is fabricated, that error can propagate through multiple systems and decisions downstream.
The commercial and regulatory consequences follow close behind. A vessel shown drifting across a boundary it never approached can trigger false compliance alerts, and the appearance of a territorial incursion. Fleet operators lose confidence in their own tracking, while insurers and regulators interpret data the vessel itself can no longer stand behind. The real loss is trust in the position, and trust is slow to rebuild once it has gone.
A Defense Problem that Shipping Now Shares
What was once framed as a military concern has become a shared risk. Much of the sustained interference across the Baltic and North Sea, which drove thirteen European coastal states and Iceland to issue a joint warning in January 2026, has been widely linked to electronic warfare associated with the war in Ukraine.
The techniques now surfacing in commercial shipping lanes are the same ones used to shape contested regions. Grey zone activity does not draw a neat line between a warship and a tanker when both take their position from the same lightly protected civilian signals.
In some of the most exposed chokepoints, naval forces have also escorted merchant traffic in response to the wider security threat. For governments, the ability to hold an accurate and independent picture of activity at sea is a question of sovereignty as much as safety. For operators, the lesson is that protections once assumed to be someone else’s responsibility now sit squarely on the bridge.
A Critical Gap to Bridge
Much of the industry’s optimism is directed at non-terrestrial networks, the satellite layers now being folded into mainstream mobile standards. Over the long term that optimism is well founded. Momentum has carried these systems from concept toward deployment, and maritime sits among the sectors expected to depend on that connectivity as it reaches open water.
The difficulty is one of timing. Non-terrestrial networks are maturing as a way to move data, not yet as a way to guarantee a trusted position. Current NTN architectures still make significant use of GNSS, while work is under way to make future networks more resilient when GNSS is unavailable or compromised. That work is now being taken forward through 3GPP’s Release 20 standards program.
Operators cannot suspend transits through critical corridors while a promising technology completes its roadmap. The gap between the moment deception arrives and the moment the next generation network is ready to counter it is precisely the gap that has to be closed now.
What Resilience Looks like in the Meantime
The encouraging part is that the means to close that gap already exist, based on a simpler principle of not placing absolute trust in one vulnerable signal.
Positioning services that use a different satellite constellation, frequency and signal architecture from GNSS can give operators an independent source against which the reported position can be checked and any discrepancy flagged.
Satellite navigation remains remarkably useful, but independent positioning is already available to strengthen it today. It can provide the resilience operators need now, while complementing the new networks and technologies that emerge in future.
The vessels caught out in early 2026 were not the target of an exotic new weapon, they were exposed by a long-standing dependence on a signal that was never designed to be defended. The maritime sector cannot wait for the next network generation to inherit that problem and eventually resolve it. Operators need to build that assurance in before the mark on the chart quietly tells them something that is not true.
