Competence 3 (Deck)

10 Questions | Attempts: 2888

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Competence Quizzes & Trivia

Questions and Answers
  • 1. 
    Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel?
    • A. 

      Relative track information

    • B. 

      Predicted time of CPA

    • C. 

      Initial range of acquisition

    • D. 

      Set and drift of the current

  • 2. 
    This may occur when a strong echo is received from another ship at close range.
    • A. 

      Clutter

    • B. 

      Diffraction

    • C. 

      False echo

    • D. 

      Multiple echoes

  • 3. 
    The description beside an illustration on a chart would mean a:
    • A. 

      Radar calibration beacon

    • B. 

      Radar transponder beacon

    • C. 

      Radar conspicuous beacon

    • D. 

      Circular radio beacon

  • 4. 
    What is dangerous with operating the ARPA in mixed mode over time?
    • A. 

      Forgetting that this actually is a mixed mode

    • B. 

      The ARPA symbols becomes unstable

    • C. 

      Overloading the computer

    • D. 

      The target warning are no longer relevnat

  • 5. 
    When the gyro-pilot is used for steering, what control is a adjusted to compensate for varying sea conditions?
    • A. 

      Weather adjustment

    • B. 

      Rudder control

    • C. 

      Lost motion adjustment

    • D. 

      Sea control

  • 6. 
    What is the purpose of the anti-clutter "sea" control on the radar?
    • A. 

      Reduce the sea echoes

    • B. 

      Remove wash return from the propeller

    • C. 

      Increase brilliance of large echoes against sea

    • D. 

      Intensify sea return

  • 7. 
    What does RADAR stand for?
    • A. 

      Radio detection and ranging

    • B. 

      Radio detection and reconnaissance

    • C. 

      Radio display and reconnaissance

    • D. 

      Radio Director and reviewer

  • 8. 
    The components that generate the radio-frequency energy in the form of short powerful pulse is the:
    • A. 

      Receiver

    • B. 

      Magnetron

    • C. 

      Modulator

    • D. 

      Indicator

  • 9. 
    With regards to ARPA, what does the "lost target" warning tell?
    • A. 

      Display failure

    • B. 

      Radar failure

    • C. 

      Computer failure

    • D. 

      Target can no longer be plotted

  • 10. 
    When using the ARPA in heavy rain, which action should you take?
    • A. 

      Increase the STC setting to reduce close-in spurious signals.

    • B. 

      Increase the radar gain to pick up weak echoes through the rain.

    • C. 

      Navigate as though the effective range of the radar has been reduced.

    • D. 

      Increase the range of the inner and outer guard rings.

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