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Exam prep
Practical guides to the COLREGS, buoyage, lights and shapes, and exam prep - written to be useful at the chart table, not just in the classroom.

Sound signalsCOLREGS rulesRule 34Fog signalsExam prep
Sound Signals Every Skipper Must Know: 1 Blast to 5
From one short blast to five, here is what COLREGS Rules 34 and 35 actually require - and where US Inland rules catch skippers out.

COLREGS rulesSailing vesselsExam prepSeamanshipNavigation lights
Rule 12 Explained: Which Sailing Vessel Gives Way?
Port tack, starboard tack, windward boat - Rule 12 ranks them all. Here's how to apply the hierarchy confidently at sea and in exams.

COLREGS rulesCollision avoidanceExam prepSeamanshipRule of the road
Stand-On vs Give-Way: Who Moves, and When Rules Change
Rule 16 and Rule 17 explained clearly - including the moment a stand-on vessel must stop standing on and take action.

COLREGS rulesExam prepSeamanship
Rule 5: why look-out is the rule examiners care about most
Every COLREGS incident report seems to cite Rule 5. What "a proper look-out by sight and hearing" actually demands, why it applies even at anchor watch, and how examiners test it.