Furuno USA Inc 9ZWFM4850 Manuale Utente
Fog Horn/Hailer/Intercom
FM-4850 Operator’s Manual
46
Sound warning signals
Warning
Signal
Function
Remarks
Manual
For ship passing. The lengths and timing of the horn blasts are
controlled by pressing and holding the PTT
key on the handset.
Yelp
For emergency
siren.
Underway
For power-driven
vessels
underway.
One 5-second blast at 120-second interval.
Stopped
For power-driven
vessel that is
stationary.
Two 3-second blasts, with a 2-second interval
between each blast, repeated every 120
seconds.
Sailboat
For sailboats, tug
boats and tow
boats underway.
One 3-secondblast, followed by one 2-second
interval, one 1-second blast, one 2-
secondinterval and one 1-second blast.
Repeated every 120 seconds.
5s
120s
Underway
Signal
3s
120s
2s 3s
Stopped Signal