BOTH INTERNATIONAL & INLAND As defined in the Rules, a towing light is a yellow light having the same characteristics as which light?
Official USCG Answer & Rule Citation
Correct Answer: Option C — stern light
Rule 21(d) explicitly states that a towing light is a yellow light having the same characteristics as the stern light described in Rule 21(c). This means it must show an unbroken light over an arc of the horizon of 135 degrees, fixed to show from right aft.
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