ARPA Written Exam Questions With Solved Answers Graded A+ Latest Update
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ARPA Written
ARPA Written Exam Questions With Solved Answers Graded A+ Latest Update
1. What controls would you adjust if known targets were not being detected on your radar?--- correct answer --- Gain, suppressions + range scale
2. What contributes to assessment of risk of collision?--- correct answer --- ...
ARPA Written Exam Questions With Solved
Answers Graded A+ Latest Update
1. What controls would you adjust if known targets were not being
detected on your radar?--- correct answer --- Gain, suppressions + range
scale
2. What contributes to assessment of risk of collision?--- correct answer -
-- -relative motion line (CPA/TCPA)
-Aspect
-the amount of error in calculations
3. A radar contact will remain stationary on a relative motion radar
display only when it is?--- correct answer --- On the same course + speed as
your vessel
4. You are underway at 10 kts. At 1800 you note a radar contact dead
ahead at a range of 10 miles. At 1812 the contact is still dead ahead bu at a
range of 8 miles. The estimated speed of the contact is .--- correct
answer --- Dead in the Water (DIW)
5. You are underway at 5 kts and see on your radar a contact 10 miles
directly astern of you. 12 minutes later the same contact is 8 miles directly
astern of you. What is the estimated speed of the contact?--- correct answer
--- 15 kts
, 6. The closest point of approach (CPA) of a contact on a relative motion
radar may be determined--- correct answer ------ correct answer --- after the
contact has been marked at least twice over a period of at least a minute
7. A radar display in which the orientation of the display is fixed so that
North is always at the top of the screen is called a/an--- correct answer ---
Stabilized display
8. What inputs are required to maintain a North-Up, True Motion
display?--- correct answer --- Gyro course + speed log
9. In addition to ARPA information, an ARPA user should take into
account--- correct answer --- -
-the limitations of that information
-rules of the road
-circumstances of the situation including external considerations
10. In restricted visibility what should you avoid when altering course for
a vessel forward of your beam that you cannot see visually?--- correct
answer --- Altering course to port except in overtaking situations
11. When two ARPA equipped ships collide, which of the following is
typically true?--- correct answer --- both vessels are likely to be found at
fault
12. When using an ARPA, what should you consider in order to evaluate
the information displayed?--- correct answer --- Navigational constraints
may require a target vessel to change course
13. What information is least dependent of ARPA processing?--- correct
answer --- EBL/VRM data
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