Rules of the roadQuestion 454 of 566

How many blasts does each vessel sound as it turns to starboard in a head-on meeting?

  1. Two blasts
  2. Three blasts
  3. One blast
  4. Five blasts
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Correct answer: One blast

The card shows each vessel sounding one blast as it alters course to starboard.

Source: Safe Boating Guide (TP 511E, 2026), Rules of the Road, page 63

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Questions last reviewed: 18 October 2026