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COLREGS Quick Reference

The essential Rules of the Road condensed onto a printable reference card. Light patterns, sound signals, right-of-way hierarchy, day shapes — everything tested on the USCG exam.

✓ 12 vessel light patterns

✓ 10 sound signals

✓ Right-of-way hierarchy

✓ Meeting & crossing rules

✓ Day shapes reference

✓ Print-ready layout

VESSEL LIGHT PATTERNS

Power vessel underway (<50m): Masthead white (fwd), sternlight white, red port sidelight, green starboard sidelight

Power vessel underway (≥50m): Two masthead whites (fwd lower, aft higher), sternlight white, red/green sidelights

Sailing vessel underway: Red/green sidelights, sternlight white. Optional: red over green at masthead. NO masthead white.

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