Aids to navigationQuestion 262 of 352

A light shows white in one sector and red in another. How should you use the color change?

  1. As an exact bearing to the light
  2. As a sign that the light is broken
  3. As a sign to anchor
  4. As a warning only, not an exact bearing
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Correct answer: As a warning only, not an exact bearing

The sector edges are not exact, so use them only as a warning of danger.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.45 Light characteristics

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Questions last reviewed: 18 October 2026