Individual skill

track-planes-and-ships

Track aircraft and vessels from public ADS-B and AIS broadcasts using ADS-B Exchange, Flightradar24, FlightAware, MarineTraffic, VesselFinder and Equasis. Use when following a tail number or flight, looking up an ICAO 24-bit hex code, registration or callsign, tracing a ship by IMO number or MMSI, checking a flag of convenience or port-call history, finding who owns a private jet or vessel, or analysing AIS gaps and dark-fleet behaviour. Applies to sanctions-evasion detection, trade and supply-chain compliance, asset tracing and recovery, and investigative journalism. Reference at useosint.com/skills/track-planes-and-ships.

skills/track-planes-and-ships/SKILL.md

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Aug 3, 2026
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# Track Planes and Ships

Aircraft and ships announce themselves over the air, and volunteers with cheap
receivers write it all down. That gives you movement history for most civil
traffic and, through registries, a path to ownership. The cost: the data is
self-reported by the vehicle, so it is exactly as truthful as its operator
chooses. The beginner error is chasing the wrong identifier — tail numbers,
callsigns, vessel names and MMSIs all change, while ICAO hex codes and IMO
numbers largely don't. Resolve to the durable identifier first and everything
downstream survives a rename.

## Triage: which identifier do you have?

| You have | Resolve to | Why |