COLREG / ARPA / AIS Bridge Rule 19(d) Rule 8 ✓ Free demo

RV — Target Right Ahead (Rule 19(d))

Fog. Visibility under 0.5 NM. A target has been detected by radar right ahead, closing on reciprocal course. Take action in ample time.

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Scenario briefing

Fog. Visibility under 0.5 NM. A target has been detected by radar right ahead, closing on reciprocal course. Take action in ample time. Rule 19(d)(i) prohibits an alteration of course to PORT for a vessel forward of the beam (except when overtaking). Achieve a CPA of at least 1 NM, then click EVALUATE.

Applicable COLREG rule(s)

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

Rule 8 — 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(d) — Restricted visibility — target right ahead — radar PPI with AIS targets — Bridge-simulator scene under COLREG Rule 19(d) — Restricted visibility — target right ahead. 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.

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.