Rules of the Road · General & Definitions
Which of the following is NOT included in the definition of 'restricted visibility' under 72 COLREGS?
- AFog
- BHeavy rain
- CDarkness✓ Correct
- DSand storm
Explanation
Rule 3(l) defines restricted visibility as any condition where visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms, or any other similar causes. Darkness is not restricted visibility — vessels at night use the same steering and sailing rules as daytime, not the Rule 19 restricted visibility rules.
Authority: 72 COLREGS Rule 3(l)
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