one prolonged blast every 2 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 should be sounded every two minutes.
One prolonged blast should be sounded every two minutes.
One prolonged blast should be sounded every two minutes.
One horn blast every two minutes.
One prolonged blast followed two short blasts, every two minutes, not to exceed two minutes. Rule 35-Sound Signals in restricted visibility.