Competence 3 (Deck)

10 Questions | By Catherinehalcomb | Updated: Mar 21, 2022 | Attempts: 2888

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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.