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Subel. G
6 questions
Subelement G
VHF-DSC Equipment & Comms:
Section 47
VHF-DSC Calls: Distress, Urgency & Safety:
The quickest way to transmit a DSC Distress alert is:
  • Select "Distress" priority from the menu and transmit an "all ships" call.
  • Transmit a "MAYDAY" call on Ch-16.
  • Correct Answer
    Press the "Distress Hot Key" as specified by the equipment manufacturer.
  • Select "Distress Relay Select" from the menu and transmit the call.
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A DSC Urgency priority call is usually set up in the following manner:
  • Such calls are sent first to all coast stations and then later to all ship stations.
  • Such calls are sent to an individual coast station.
  • Such calls are sent to an individual ship station.
  • Correct Answer
    Such calls are sent simultaneously to "all stations".
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A DSC Safety call might be used under the following conditions:
  • Correct Answer
    Navigation Hazard
  • Man overboard
  • Distress situation
  • Serious medical request
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To send a Distress alert use the following procedure:
  • Initiate a menu call to select Ch-16 for voice communications.
  • Correct Answer
    Use the "Distress Hot Key" in an appropriate manner.
  • Always insert the nature of the Distress first.
  • Make a voice Mayday call on Ch-16 before any other action.
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DSC Urgency priority calls may be sent using the "Distress Hot Key" under the following circumstances:
  • If no additional information is required to be transmitted.
  • Correct Answer
    Under NO circumstances.
  • Only if the position information is correct.
  • The "Distress Hot Key" can be programmed for either Urgency or Distress as required.
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A DSC Safety priority call might be used under the following circumstances:
  • A crew member is missing and presumed lost overboard.
  • There is a fire in the engine room.
  • Correct Answer
    A lifeboat has been lost over the side in heavy weather and is adrift.
  • A medical situation that did not present an imminent danger of loss of life.
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