Navigation lightsQuestion 208 of 566

How wide is the arc of a masthead light?

  1. 135 degrees
  2. 225 degrees
  3. 112.5 degrees
  4. 360 degrees
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Correct answer: 225 degrees

The white masthead light shines forward and covers 225 degrees.

Source: Safe Boating Guide (TP 511E, 2026), Navigation lights, page 28

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Questions last reviewed: 18 October 2026