Boating Coach US
Sound signalsQuestion 122 of 352

What does a signal of three short blasts mean?

  1. I am in danger
  2. I am slowing down
  3. I am turning to starboard
  4. I am operating astern propulsion
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Correct answer: I am operating astern propulsion

Three short blasts tell others that your boat is going in reverse.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.34 Maneuvering and warning signals (Rule 34)

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Questions last reviewed: 18 October 2026