Navigation lights and shapesQuestion 88 of 352

A power boat tows astern, and the tow is longer than 200 meters. How many masthead lights does the towing boat show in a vertical line?

  1. One
  2. Three
  3. Two
  4. Four
Show answer

Correct answer: Three

Over 200 meters, the towing boat adds a third masthead light.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 83: Inland Navigation Rules, § 83.24 Towing and pushing (Rule 24)

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Questions last reviewed: 18 October 2026