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Sound Signal 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. For example, sound signals are required when meeting head-on, crossing, and overtaking. Sound-producing devices must be capable of producing a blast that lasts at least two seconds.

  • The following requirements apply to vessels operating on Wyoming state waters.
    • Vessels less than 26 feet long, which includes PWC, are required to carry on board a hand-, mouth-, or power-operated sound-producing device that is audible for at least one-half mile.
    • Vessels 26 feet to 40 feet long are required to carry on board a hand- or power-operated sound-producing device that is audible for at least one mile.
    • Vessels that are 40 feet or more in length are required to carry on board a power-operated sound-producing device that is audible for at least one mile.
  • These requirements apply to vessels operating on federally controlled waters.
    • Vessels less than 65.6 feet (20 meters) 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 audible for at least one-half mile.
    • Vessels that are 65.6 feet (20 meters) or more in length are required to carry on board a whistle or horn, and a bell that are audible for at least one mile.