Navigation General · Light Sectors
A charted light showing a red sector over a particular range of bearings typically warns that within that sector the mariner is:
- AIn the safest water
- BApproaching an anchorage
- CStanding into danger (e.g., over shoals or off the safe channel)✓ Correct
- DClear of all hazards
Explanation
A red sector of a sectored light marks a danger area: as long as the white sector is seen the vessel is in safe water, but seeing red warns the mariner is standing into danger over the bearings the red sector covers. The Light List gives the exact bearings.
Authority: USCG Light List; chart light sectors
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