Furuno USA Inc 9ZWFM4850 用户手册
FM-4850 Operator’s Manual
Fog Horn/Hailer/Intercom
47
Warning
Signal
Function
Remarks
Towed
For vessels under
tow.
One 3-second blast, followed by one2-second
interval, one 1-second blast, one 2-second
interval, one 1-second blast, one 2-second
interval, and one 1-second blast. Repeated
every 120 seconds.
Anchored
For vessels at
anchor.
A rapidly ringing bell tone sounds for about 5
seconds, repeated at an interval of 60
seconds.
5s
60s
Anchored Signal
Aground
For vessels
aground.
Two bell tones of 0.5 seconds, a bell tone
of1.5 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 1.5seconds. Repeated once every
60seconds.
3s
120s
2s 1s 2s1s
Sailboat Signal
3s
120s
2s 1s 2s1s
1s
2s
Towed Signal