BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 10 meters in length?

Correct Answer: Option C — Any means of making an efficient sound signal

Rule 33(a) mandates that vessels of 12 meters or more in length carry a whistle and a bell. However, for vessels less than 12 meters, the rule requires only that the vessel be provided with some means of making an efficient sound signal, not necessarily a specific whistle or bell.