BOTH INTERNATIONAL & INLAND What equipment for fog signals is required for a vessel 13 meters in length?

Correct Answer: Option D — Whistle only

Rule 33(a) mandates that vessels 12 meters or more but less than 20 meters in length must be provided with a whistle. A bell is only required for vessels 20 meters or more in length. Therefore, a 13-meter vessel is only legally required to carry a whistle.