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Subel. G
6 questions
Subelement G
VHF-DSC Equipment & Comms:
Section 49
VHF-DSC: Other DSC Functions-1:
The DSC received call directory usually sorts and stores incoming calls in what manner?
  • Correct Answer
    Received calls are typically divided into two directories distinguished by priority.
  • All received calls are saved in a single category.
  • Received calls are always divided into Distress and Urgency categories.
  • Only received Distress calls are saved.
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Why would you want to access your MMSI number?
  • To call another vessel.
  • Correct Answer
    To determine that the number is correct.
  • To change it.
  • There is no reason to access your MMSI number.
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What precautions should be taken when reviewing previously transmitted messages?
  • Press the "Call" key when finished.
  • Always save the message.
  • Correct Answer
    Take steps not to accidentally send the message again.
  • No precautions are necessary.
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How many times is it possible to change your own MMSI number in a VHF unit?
  • It is not possible.
  • It may be changed by the operator up to 4 times.
  • MMSI numbers can only be changed by the manufacturer.
  • Correct Answer
    On some units it can be changed at will if the password is known.
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What precautions should be taken when reviewing received Distress messages?
  • Correct Answer
    Take steps not to accidentally send a DSC acknowledgement or relay.
  • Press the "Call" key when finished.
  • Always save the message.
  • No precautions are necessary.
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Which of the following is not true regarding vessel position information?
  • The position is normally provided from GPS input.
  • Correct Answer
    The time of the updated position should be UTC or the correct local zone time.
  • If the position is not automatically updated it must be manually updated every 4 hours.
  • The position information must be periodically checked to ensure that it remains current and accurate.
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