Aids to navigationQuestion 250 of 352

Which buoy has a tapered, conical shape?

  1. A nun buoy
  2. A can buoy
  3. A pillar buoy
  4. A spherical buoy
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Correct answer: A nun buoy

A nun is pointed like a cone. A can is a cylinder.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 62: United States Aids to Navigation System, § 62.23 Beacons and buoys

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Questions last reviewed: 18 October 2026