Public reconstruction of GNSS spoofing as an operational maritime failure: a container ship grounded in the Red Sea after believing a fake fix; Baltic unavailability ~20%; Black Sea near-daily spoofing. Terminal automation fuses GNSS with INS in a way that handles outage, not a lying signal.

Quoted text

A container ship's GPS told its crew they were hundreds of miles from where they actually were. They believed it. The ship ran aground in the Red Sea last year, millions of dollars in damage, five weeks of salvage. This isn't new. The first documented case of this exact attack goes back to 2017. What's changed is the scale, a research vessel monitoring the Baltic near Kaliningrad through last summer found GNSS positioning unavailable close to a fifth of the time it was at sea, and the Black Sea has reached near daily spoofing by some counts. It doesn't stop at the breakwater either. Container terminals run cranes and automated vehicles on GNSS fused with inertial sensors... It was never built to catch a signal that's present, confident, and lying.

Read and engage with the original on X. This desk is not a republication feed.

Analyst rationale

Secondary technical note, not a class-society circular. Pattern matches ClassNK's June warning that Hormuz-class signal interference makes MASS decision-making unreliable. Directly feeds the new maritime register card.