Rule 23 — Power-driven Vessels Underway

International Regulations for Preventing Collisions at Sea (COLREGS)

RULE TEXT

A power-driven vessel underway shall exhibit: (a) a masthead light forward; (b) a second masthead light abaft of and higher than the forward one (vessels ≥50m); (c) sidelights; (d) a sternlight.

TEST YOURSELF ON Rule 23

Practice all COLREGS scenarios in the full challenge mode.

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ALL RULES REFERENCE

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