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Subelement E
Distress, Urgency & Safety Communications:
Section 29
Sending a Distress Alert:
What is usually the first step for a GMDSS Radio Operator to take when initiating a Distress priority message via Inmarsat?
  • Correct Answer
    By pressing a "Distress Button" or "Distress Hot Key(s)" on the equipment.
  • By dialing the correct code on the telephone remote unit.
  • By contacting the LES operator and announcing a Distress condition is in existence.
  • By contacting the LES operator using the radiotelephone Distress procedure "Mayday"... etc.
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Which of the following statements is true regarding Distress alerting under GMDSS?
  • Ship to shore Distress alerts are used to alert other ships in port of navigational hazards.
  • Correct Answer
    The Distress alert should identify the station in Distress and its position & time of position update. Also, the alert may include the nature of the Distress, the type of assistance required, or the course and speed of the mobile unit.
  • Ship-to-ship Distress alerts are used to alert other ships in the vicinity of navigational hazards and bad weather.
  • The vessel nearest to the emergency must notify the Coast Guard before leaving the vicinity.
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If a GMDSS Radio Operator initiates a DSC Distress transmission but does not insert a message, what happens?
  • The transmission is aborted and an alarm sounds to indicate this data must be provided by the operator.
  • The transmission is not initiated and "ERROR" is indicated on the display readout.
  • Correct Answer
    The transmission will be made with "default" information provided automatically.
  • The receiving station will poll the DSC unit of the vessel in Distress to download the necessary information.
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Repetition of a DSC Distress call is normally automatic if not acknowledged after a delay of:
  • 2 - 5 minutes
  • 10-15 minutes
  • 1 - 2 minutes
  • Correct Answer
    3.5 - 4.5 minutes
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For a MF/HF DSC Distress call which statement is false?
  • Correct Answer
    It always requests J3E Voice follow-on communications so other vessels can hear the Mayday.
  • It will send the minimal necessary information using the "Distress Button" or "Distress Hot Key."
  • It will send a more detailed Distress format if time permits and operator data entries are correctly performed.
  • It does not contain all the information normally of interest in on-scene Distress communications.
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Which statement regarding an MF/HF DSC Distress call is true:
  • Follow on communications should be presumed to take place on the SITOR (NBDP) frequency associated with the specific DSC frequency used.
  • Correct Answer
    Follow on communications should be presumed to take place on the voice frequency associated with the specific DSC frequency used.
  • An alternate emission and frequency may be specified for follow-up communications by the vessel in the original Distress alert.
  • Both the nature of Distress and the alternate emission and frequency must be specified for follow-up communications in the original Distress alert.
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