The sound signals that it is a sailing vessel underway when you hear one prolonged blast plus two short blasts every two minutes.
The sound signals that it is a sailing vessel underway when you hear one prolonged blast plus two short blasts every two minutes.
A power-driven vessel under way is required to sound one prolonged blast every 2 minutes. This signal indicates its presence and is meant to alert other vessels, especially in restricted visibility conditions. The prolonged blast lasts for about four to six seconds.
One prolonged blast followed by two short blasts every two minutes is a sound signal used by vessels in fog or low visibility conditions. This signal indicates that the boat is under way and making way through the water. It serves to alert other vessels in the area of its presence and movement to help prevent collisions.
When visibility is very limited, such as in heavy fog, boaters must give an audible signal to others in the area. For a sailboat the signal is one prolonged blast plus two short blasts every two minutes.
one prolonged blast
one prolonged blast
One prolonged blast
one prolonged blast
one prolonged blast
one prolonged blast
one prolonged blast
One prolonged blast