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RoPax Passenger Ferry — Pilot on a Live-Passenger Route

By Field Engineering · April 30, 2026 · 6 min read

A ro-ro passenger ferry on a short-sea route with passengers on board. The detection problem and the alarm posture are both materially different from a PCTC.

A ro-ro passenger ferry carries passengers and crew within metres of the vehicle deck. The alarm posture is correspondingly tighter — a false alarm has passenger-experience consequences a PCTC does not face — and the response procedure assumes evacuation may follow within minutes.

Configuration changes from PCTC

  • Coherence windows tightened to reduce nuisance alarms during passenger sailings.
  • Bridge alarm hierarchy adjusted so a vehicle-deck red state escalates faster than on a cargo-only vessel.
  • Bridge console mirrored to the safety officer's station rather than ECDIS-adjacent only.

Operational outcome

~720
Sensor cells across the instrumented decks
0
False alarms during 120 sailings
0
Missed events (none staged or natural)

The trial did not produce a real event window — which is the best possible outcome for a ferry pilot. What it did produce was an alarm-posture configuration that the operator has now standardised across the rest of the route.

Ro-pax tonnage is where the regulatory pressure has arrived first. The pilot was as much a study in alarm posture as in detection.
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