Distress signalsQuestion 285 of 352

Which marker can help rescuers see you from the air or water?

  1. A white sail
  2. A dye marker
  3. A black flag
  4. A paper map
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Correct answer: A dye marker

A dye marker is a supplemental signal.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 87: Annex IV: Distress Signals, § 87.03 Supplemental signals

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Questions last reviewed: 18 October 2026