1st 50 Flashcards
(230 cards)
ITU along which other organization details Distress, Urgency and Safety procedures?
ICAO
What is the condition of being threatened by serious and/or imminet danger and requiring immediate assistance defined as?
Distress
Which condition concerns the security of a ship, aircraft or other vehicle, or of some person on board or within sight, but which does not require immediate assistance?
Urgency
Which type of traffic has absolute priority over all other transmissions?
Distress
Which service is between coast stations and ship stations, or between ship stations, in which survival craft stations may also participate?
Maritime Mobile Service
Which organization administers the Global Maritime Distress and Safety System?
IMO
Which year was the Global Maritime Distress and Safety System fully implemented?
1999
Approximately how many nautical miles are GMDSS Area A1 Operational areas from shore based VHF coast stations?
20-30
Approximately how many nautical miles are GMDSS Area A1 Operational areas from shore based MF coast Stations?
100-150
Which system uses modern technology , including satellite and digital selective calling techniques on MF,HF, and VHF bands, known as terrestrial systems, enabling a distress alert to be transmitted and received automatically over short and long distances?
GMDSS
Which procedure comprise all the communications relating to the immediate assistance required by the mobile station in trouble?
Distress
Which word when using voice does the distress signal contain
MAYDAY
What are the two primary sinusoidal audio frequency tones transmitted alternatively in alarm signals used to warn operators that a distress call or message is to follow?
2200 Hz and 1300 Hz
How many seconds is the alarm signal continuously sent to warn operators that a distress call or message is to follow?
30-60
Which paging technique is used to automate the initial call between two stations that operates on MF,HF and VHF marine bands for distress, urgency, and safety alerting?
DSC
How many times is MAYDAY spoken during a distress call?
3
How many times is SOS typed during a distress call using RATT/NDPB?
3
Which prosign is used during a distress call using RATT/NDPB
DE
What is the International Distress frequency for voice?
2182 kHz
What is the International Distress, Safety, and Calling frequency for the maritime mobile VHF radiotelephone service?
156.8 MHz
Which signal is used to impose silence either on all stations of the mobile service in the area or on any station which interferes with the distress traffic when using RATT/NDPB
QRT SOS
Which frequencies are continously monitored by aeronautical stations for aircrafts in distress?
121.5 MHZ and/or 243 MHz
Which signal is used to impose silence either on all stations of the mobile service in the area or on any station which interferes with the distress traffic when using RATT.NDPB?
QRT SOS
Which signal indicates that the calling station has a very urgent message to transmit concerning the safety of a ship, aircraft, or other vehicle, and/or the safety of personnel?
PAN PAN