A cargo vessel ran tight circles for two hours, waiting on a pilot, directly above active subsea infrastructure. The wait itself was the risk.
When a vessel is called into port, she's instructed to hold at a designated Pilot Station — typically 0.5 to 1.0 nautical miles outside the entrance — until the port pilot boards. It's the most routine phase of the entire transit.
Standard safety protocol requires releasing the anchor's safety pin during this wait, so it's ready for immediate emergency deployment if engine failure, steering blackout, or a sudden weather shift demands it. That's sound practice. The problem is where the waiting actually happens.
In a perfect world, the Pilot Point is a designated safe area clear of infrastructure, and the wait is a few minutes at most. But major ports are dense industrial hubs. The waters around them are what our team calls industrially contaminated — crisscrossed with subsea pipelines and cables. As marine traffic grows and pilots get booked further out, wait times stretch longer and less predictably.
That's where "position cheating" starts. Captains know that final clearance into a busy port can take hours, sometimes be pushed back a full day. To improve their odds, vessels begin adjusting position:
Every one of those adjusted positions can put a large vessel directly on top of critical subsea infrastructure. If a mechanical fault strikes during standby and that pre-primed emergency anchor drops, a routine wait becomes a multi-million-dollar incident in seconds.
We don't just theorize about this pattern — we watch it happen. SIPS recently captured a live observation of a cargo vessel waiting for port entry. The vessel spent its standby phase running tight circles directly over a client's active subsea infrastructure for more than two hours.
Because position cheating is built directly into the SIPS predictive risk model — not bolted on as a generic geofence — the system flagged the behavior as high-risk the moment the pattern emerged, well before any emergency anchor drop was in play.
Waiting for a pilot is the most routine phase of a transit. It's also one of the easiest places for a vessel to end up sitting on top of a pipeline without anyone flagging it.
Generic anchor-watch and geofencing tools treat the pilot station wait as background noise — a vessel sitting still, or nearly still, near the port. That's exactly the blind spot position cheating exploits.
SIPS combines 30 years of hands-on marine operations experience with continuous AI-driven pattern recognition. The system doesn't just watch for vessels crossing a boundary line — it understands how captains actually behave under scheduling pressure, and flags the drift before the anchor pin comes out.
No incident occurred here. That's the point: the system did its job before there was anything to recover from.
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