Boating Coach US
Rules of the roadQuestion 148 of 352

Which condition counts as restricted visibility?

  1. A clear night with a bright moon
  2. A busy harbor on a sunny day
  3. Heavy rain that limits how far you can see
  4. Rough waves on a clear day
Show answer

Correct answer: Heavy rain that limits how far you can see

Fog, mist, falling snow, heavy rain and similar causes make restricted visibility.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.03 General definitions (Rule 3)

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Questions last reviewed: 18 October 2026