Requirements to Have Sound-Producing Devices

In periods of reduced visibility or whenever a vessel operator needs to signal his or her intentions or position, a sound-producing device is essential. The navigation rules for meeting head-on, crossing, and overtaking situations are examples of when sound signals are required. However, you are prohibited from sounding a sound-producing device while within any harbor limits or while in congested waterway traffic.

• On Oklahoma state waters, follow these requirements for sound-producing devices.
  • Vessels less than 26 feet in length, which includes PWC, are required to carry on board a whistle or horn or some other means to make an efficient sound signal.
  • Vessels that are 26 feet or more in length are required to carry on board a whistle or horn, and a bell.
• On federally controlled waters, follow these requirements for sound-producing devices.
  • Vessels less than 39.4 feet (12 meters) in length, which includes PWC, must have some way of making an efficient sound signal. Examples are a handheld air horn, an athletic whistle, an installed horn, etc. A human voice is not acceptable.
  • Vessels that are 39.4 feet (12 meters) or more in length must have a sound-producing device that can produce an efficient sound signal. The sound signal should be audible for one-half mile and should last for 4 to 6 seconds.