Navigation failures are easy to understand when the screen goes blank. The harder problem is the one GeoWatch is built around: a position that still looks tidy, stable, and operationally useful while the underlying trust has already started to fail.
Spoofing, jamming, stale fixes, drift, and sensor disagreement do not always announce themselves as dramatic alarms. They can appear as small inconsistencies that crews have to interpret while still running the vessel.
That is why bridge-ready trust monitoring matters. GeoWatch watches for the behaviour around the fix, not just the fix itself, and helps preserve the context needed to understand the event later.