Element 7: GMDSS Radio Operating Practices

effective 8/01/2006

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7-A-029: Sending a Distress Alert

7-29E1: What is usually the first step for a GMDSS Radio Operator to take when initiating a Distress priority message via Inmarsat?

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.



7-29E2: Which of the following statements is true regarding Distress alerting under GMDSS?

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 shore Distress alerts are used to alert other ships in port of navigational hazards.

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.



7-29E3: If a GMDSS Radio Operator initiates a DSC Distress transmission but does not insert a message, what happens?

The transmission will be made with "default" information provided automatically.

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.

The receiving station will poll the DSC unit of the vessel in Distress to download the necessary information.



7-29E4: Repetition of a DSC Distress call is normally automatic if not acknowledged after a delay of:

3.5-4.5 minutes

2-5 minutes

10-15 minutes

1-2 minutes



7-29E5: For MF/HF DSC Distress call which statement is false?

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.



7-29E6: Which statement regarding an MF/HF DSC Distress call is true:

Follow on communications should be presumed to take place on the voice frequency associated with the specific DSC frequency used.

Follow on communications should be presumed to take place on the TELEX 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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7-A-028: DSC Frequencies
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Element 7: GMDSS Radio Operating Practices
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7-A-030: Follow-on Voice Transmission