COLREG / ARPA / AIS Bridge
Rule 28
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Rule 28 — CBD Vessel Lights
NIGHT. A vessel shows THREE all-round RED lights in a vertical line in addition to the lights required for a power-driven vessel. What is she?
This scenario is part of the full library.
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Scenario briefing
NIGHT. A vessel shows THREE all-round RED lights in a vertical line in addition to the lights required for a power-driven vessel. What is she?
Applicable COLREG rule(s)
Rule 28 — referenced in this scenario. Practising this scenario reinforces correct application under realistic time pressure.
Why it matters
COLREG knowledge is the foundation of safe ship handling. Most maritime collisions happen because watchkeepers either misidentified the situation, applied the wrong rule, or acted too late. This scenario lets you train pattern recognition + correct response under time pressure — the exact skill the rules are designed to support. RYA, Yachtmaster, STCW and most national exams expect you to apply COLREGs reflexively, not just recite them.
Related scenarios
About SkipperCheck simulators
SkipperCheck offers two browser-based maritime training simulators:
- ARPA · AIS · COLREG Bridge Simulator — 54 scenarios covering Rules 2, 5–10, 12–19, 23–30, 34 and 35.
- VHF SRC Radio Simulator — 15 scenarios: voice Mayday, DSC distress, Mayday Relay, Pan-Pan, Sécurité, routine.
Both run in any modern browser, on desktop or mobile. No install, no plugins.