Utah Boating Safety Course


WHEN AND HOW TO SOUND OFF

When two power-driven vessels encounter each other within one half mile, sound signals must be used. The initiating vessel indicates a maneuver, and the responding vessel agrees or disagrees.

 

SOUND SIGNALS

1 short blast (1 second)

I want to pass you on my portleft hand side of a vessel. side (Hint: PORT = 1 syllable = 1 short blast)

2 short blasts

I want to pass you on my starboardright hand side of a vessel. side (Hint: STARBOARD = 2 syllables = 2 short blasts)

3 short blasts

Engine is in reverse

5 short blasts

Danger, or do not understand approaching boat's intentions

1 prolonged blast (4-6 seconds)

Warning:

  • Entering or exiting a blind turn
  • Nearing an obstructed area
  • Leaving a dock or a berth

1 prolonged blast every 2 minutes

Power-driven vessel operating in low or restricted visibility

1 prolonged blast + 2 short blasts every 2 minutes

Sailing vessel operating in low or restricted visibility