COLREG / ARPA / AIS Bridge Rule 19(e) Rule 6 🔒 Course / Premium

RV — Close Quarters Unavoidable (Rule 19(e))

You hear a fog signal forward of the beam. The target is detected very close (under 2 NM) on a steady bearing.

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Scenario briefing

You hear a fog signal forward of the beam. The target is detected very close (under 2 NM) on a steady bearing. Rule 19(e): when close-quarters cannot be avoided by altering course alone, REDUCE speed to the minimum at which the vessel can be kept on course ( 3 kn in this sim tap DEAD SLOW for 2 kn, or use REV in 5% steps; EMERG ASTERN is available if you must take all way off). Combine with a small course alteration if needed.

Applicable COLREG rule(s)

Rule 19(e) — referenced in this scenario. Practising this scenario reinforces correct application under realistic time pressure.

Rule 6 — referenced in this scenario. Practising this scenario reinforces correct application under realistic time pressure.

📸 Bridge simulator scene

Captured directly from the SkipperCheck COLREG bridge simulator at scenario T = 0 — the moment the encounter begins.

SkipperCheck bridge simulator — COLREG Rule 19(e) — Restricted visibility — close-quarters unavoidable — radar PPI with AIS targets — Bridge-simulator scene under COLREG Rule 19(e) — Restricted visibility — close-quarters unavoidable. Captured from the SkipperCheck COLREG / ARPA / AIS bridge simulator.

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.

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