When a coast station receives a distress alert on DSC equipment, she should__________.
A. acknowledge it within 2 minutes 45 seconds
B. acknowledge it within 3 minutes
C. broadcast in NAVTEX service
D. ignore it
查看答案
The address of acknowledgements of DSC alert should be____________.
A. MMSI of the ship in distress
B. MMSI of the ship (coast) station, who receives the alert
C. to all ships
D. to RCC concerned
How many blips appeared on the screen of SART-detecting radar?
A. 6
B. 8
C. 12
D. At least 12
Who can impose silence on stations which interfere with distress traffic?
A. The Personal Radio Communications Branch of the ITU.
B. A radio operator trying to make a phone patch on company official business.
C. A ship looking for navigational information.
D. The administration concerned or coordinator involved in the handling of the emergency traffic.
How many total frequencies are available for DSC distress alerting on VHF band?
A. 1
B. 2
C. 5
D. 7
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