ARPAS EXAM 2025 Questions Questions And Correct Answers Actual| Already Graded A+

ARPAS EXAM 2025 Questions Questions And Correct Answers
Actual| Already Graded A+


What does ARPA stand for?
-Solution
Automatic Radar Plotting Aid

Which of the following best describes the function of ARPA?
-Solution
Automating Radar target acquisition, tracking and plotting

What is one of the primary purposes of ARPA according to IMO
Performance Standards?
-Solution
Reducing workload by providing automatic target information

In what way does ARPA contribute to navigational safety?
-Solution
By facilitating collision avoidance through automatic tracking and
plotting

What distinguishes ARPA from manual radar plotting?
-Solution
ARPA enables simultaneous tracking of multiple targets automatically.

According to the IMO, what was the primary reason for developing
ARPA?
-Solution
Tor reduce the workload of RADAR observers and enhance collision
avoidance.

How does ARPA benefit larger vessels compared to traditional radar
plotting methods?
-Solution
By enabling simultaneous tracking of multiple targets with minimal
effort.

Which type of vessels are commonly equipped with Electronic Plotting
Aids (EPA) instead of ARPA?
-Solution

1

,Fishing Boats

What is the main difference between ARPA and EPA?
-Solution
EPA requires manual input for target plotting while ARPA is automatic.

How does ARPA improve collision avoidance capabilities?
-Solution
by predicting future positions of nearby vessels

Which organization sets the standards for ARPA functionality?
-Solution
IMO

What is the role of ARPA in relation to the radar observer's workload?
-Solution
ARPA reduces workload by providing automatic target information

How does ARPA contribute to situational awareness?
-Solution
By identifying potential hazards in the ship vicinity

Which feature of ARPA makes it particularly useful in areas of high
traffic density?
-Solution
capacity to simultaneously track multiple targets.

What is the main advantage of ARPA over traditional radar plotting
methods?
-Solution
ARPA can track multiple targets automatically.

Which display type does not suffer from image distortion near the edges
of the screen?
-Solution
LCD Flat Panel

What information can modern displays present alongside radar
presentations?
-Solution
Target data




2

, What was the limitation of the early standalone ARPA units in terms of
data processing?
-Solution
Could only process range and bearing.

What development led to the introduction of automatic radar tracking on
large commercial vessels?
-Solution
Digital Microprocessors

What is the purpose of a Doppler speed log in ARPA systems?
-Solution
To measure own ship speed

What is the primary advantage of using a trackball, mouse pad, or
joystick to access radar andARPA functions?
-Solution
Simplification of user interface

What system is used to define the location of a contact in terms of range
and bearing?
-Solution
Polar coordinate system

Which display type is mandated for all ARPAs by the IMO?
-Solution
Flat Panel LCD

How does ARPA determine if a radar contact contains a possible target?
-Solution
By analyzing the signal strength and persistence within each cell.

According to the IMO, how many targets must an ARPA equipped only
with manual acquisition be capable of tracking simultaneously?
-Solution
10 targets

How is manual target acquisition typically initiated?
-Solution
By pressing plot or acquire button

What action does the radar observer take to initiate tracking of a target in
manual acquisition mode?


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