Treat feeds as scored evidence

A ship dot on a map can be wrong in three different ways at once: the radio can be spoofed, the position can be stale, and the ship can be missing entirely because it never broadcast in the first place. That is why a growing camp in maritime surveillance is pushing operators to treat every feed as evidence with a confidence score, not as a fact. (splash247.com) Automatic Identification System is the marine version of a plane transponder: ships broadcast identity, position, course, and speed over very high frequency radio so nearby vessels and shore stations can see them. The United States Coast Guard says those broadcasts feed radar-like displays, but the system was built for navigation safety, not for proving that every signal is truthful. (navcen.uscg.gov) The rules cover a lot of big ships, but not every hull at sea. International Maritime Organization guidance says Automatic Identification System is required for passenger ships of any size, cargo ships of 300 gross tonnage and up on international voyages, and cargo ships of 500 gross tonnage and up off those routes, while warships and some government vessels are excluded. (wwwcdn.imo.org) That leaves two blind spots before anyone even starts cheating: smaller vessels that are outside the carriage rules, and legal vessels that go quiet because coverage drops in remote water. In the Arctic, those gaps get bigger because distance, weather, and sparse infrastructure make it harder to collect and verify signals. (splash247.com) The cheating problem is no longer theoretical. The United States Maritime Administration warned that Automatic Identification System is open, unencrypted, and unprotected radio, which means positions can be spoofed and traffic pictures can show incorrect or missing data. (maritime.dot.gov) European regulators are treating that as serious enough to build a dedicated working group around spoofing. The European Maritime Safety Agency says member states set up that group specifically to address Automatic Identification System spoofing inside the digital maritime system. (emsa.europa.eu) The Arctic raises the stakes because traffic is rising in exactly the waters where sensors are thinnest. National Oceanic and Atmospheric Administration research found pan-Arctic ship traffic increased from 2009 to 2018 as sea ice declined, and the agency says disappearing multi-year ice is opening routes used by cruise ships, fishing vessels, tugs, barges, and military craft. (repository.library.noaa.gov) (oceanservice.noaa.gov) That is why the new argument is less about finding one perfect feed and more about combining imperfect ones. Splash247’s April 9, 2026 interview with Space Norway’s Simon Flack points to synthetic aperture radar satellites, which can image ships through cloud and darkness, as a way to cross-check radio tracks and spot vessels that never appeared on Automatic Identification System at all. (splash247.com) Once you think that way, the software pipeline changes. A radio hit, a satellite image, a port call record, and a weather-constrained route estimate each get a probability attached, and the system carries that confidence forward instead of flattening everything into a yes-or-no answer. (splash247.com) (lloydslistintelligence.com) That also changes the human job. Analysts stop asking “Is this track true?” and start asking “Which pieces agree, which pieces conflict, and at what confidence threshold do we escalate?”, which is the logic behind analyst-in-the-loop workflows now showing up across maritime intelligence commentary and anomaly-detection research. (lloydslistintelligence.com) (sciencedirect.com) The practical result is less glamorous than a live ship map, but more useful in a contested ocean. A glowing icon on a screen looks precise; a scored chain of evidence is slower, messier, and much closer to how you keep from chasing a ghost ship into the fog. (marinetraffic.com) (splash247.com)