COLREG / ARPA / AIS Bridge Rule 2(a) Rule 2(b) Rule 17(c) 🔒 Course / Premium

Rule 2 — Departure to Avoid Immediate Danger

DILEMMA: Clear visibility. You are the STAND-ON vessel in a crossing situation a power-driven give-way vessel is on your PORT side and has failed to act.

🔒

This scenario is part of the full library. Unlock all 54 COLREG scenarios with the Skipper Refresher Course (€99.99, lifetime + certificate) or a Premium subscription (from €29.99/mo).

Buy Skipper Refresher — €99.99 Or get Premium — from €29.99/mo

Scenario briefing

DILEMMA: Clear visibility. You are the STAND-ON vessel in a crossing situation a power-driven give-way vessel is on your PORT side and has failed to act. Rule 17(c) forbids altering course to PORT for a vessel on your own port side. However, shoal water lies immediately to STARBOARD a starboard turn would put you aground. Which response best complies with COLREG 72?

Applicable COLREG rule(s)

Rule 2(a) — referenced in this scenario. Practising this scenario reinforces correct application under realistic time pressure.

Rule 2(b) — referenced in this scenario. Practising this scenario reinforces correct application under realistic time pressure.

Rule 17(c) — 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 2 — Departure to avoid immediate danger — radar PPI with AIS targets — Bridge-simulator scene under COLREG Rule 2 — Departure to avoid immediate danger. 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.