A.Signal absorption by the ionosphere
B.Heavy sea swells
C.The rescue personnel were monitoring the 10-cm radar
D.The rescue personnel were monitoring the 3-cm radar
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A.DSC provides reception of weather and navigational warnings plus search and rescue information
B.DSC provides low-cost，routine communications for the vessel operator
C.DSC is to be used for transmitting and receiving distress alerts to and from other ships or coast radio stations via radio
D.This aids SAR authorities in tracking a vessel's position by satellite
A.SART
B.EPIRB
C.NAVTEX
D.INMARSAT-B
A.Ask for permission
B.Record the time in your radio log
C.Press the push to talk button three times
D.Monitor the channel to insure that it is clear
A.An urgent message concerning a vessel in distress
B.A weather advisory about unusual meteorological or oceanographic phenomena hazardous to vessels
C.A broadcast disseminating an official government proclamation affecting shipping
D.A radio navigational warning concerning a particularly hazardous condition affecting navigation
A.It transmits "SOS" and the vessel's name and position in slow speed Morse Code
B.It will appear on a radar unit's PPI as a line of dots radiating outward with the innermost dot indicating the SART's position
C.It will appear on a radar unit's PPI as a line of dots radiating outward with the outermost dot indicating the SART's position
D.None of the above
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