For vessels
aground.
Aground
Press the FOG key on the front panel.
The FOG key flashes red
Press the Up or Down key to select "MANUAL" or "YELP".
The following information appears on the screen.
The FOG key begins flashing.
Press and hold the PTT key on the microphone.
The following information appears on the screen.
Two bell tones of 0.5 seconds, a bell tone of
1.5 second followed by a rapidly ringing
bell tone for a duration of about 5 seconds,
followed by two bell tone of 0.5 seconds
and a bell tone of 1.5 seconds. Repeated
once every 60seconds.