radar (finals) Flashcards
. According to rule 5, what must every vessel maintain at all times?
- Proper Look-out
- Safe Speed
- Crossing vessel
- Visual? and Display
Proper Look-out
What is a common error in interpreting data in radar/ARPA?
- Confusing True and Relative Vector
- Correcting? /Identifying CPA
- Accurately plotting the vessel position
- Using radar in clear visibility
Confusing True and Relative Vector
Which of the following is a requirement of ARPA regarding target tracking?
- It should track one target at a time.
- It should track at least 20 targets simultaneously.
- It should not mistake? past position of target.
- It should only track targets in clear weather.
It should track at least 20 targets simultaneously.
In any action taken to avoid collision, it shall be taken in accordance with the rules of this rule 8 part and shall keep the circumstances of the case admit be positive made in act on time with due regard to the observant of ________
- Maneuvering capabilities
- Officer of the watch
- All targets around
- Good seamanship
Good seamanship
What is a guardzone in a radio system?
- A fail? carry of navigation
- A song/zone that triggers an alarm when a target enters
- A designated area of a target
- A soft? or emergency remover
A zone that triggers an alarm when a target enters
What is the effect of sense of errors on ARPA equipment?
- They have no effect
- They can lead to inaccurate tracking
- They improve performance
- They only affect visual display
They can lead to inaccurate tracking
What should be done if the ARPA system indicates a malfunction?
- Continue using it without chart? changes
- Ignore the warning
- Follow the self-diagnostic routine
- Turn off the system
Follow the self-diagnostic routine
What is the significance of the time to CPA?
- It indicates the time until the next waypoint.
- It shows how long until the closest point of approach.
- It measures the time until the vessel reaches a critical area.
- It indicates the time until the radar will sound a dangerous target
It shows how long until the closest point of approach.
What is the primary function of the self-diagnostic routine in ARPA?
- Enhance radar range
- Monitor correct operation of circuits
- Provide weather updates
- To calculate collision data
Monitor correct operation of circuits
Which of the following is a potential consequence of bearing errors in radar installation?
- Improve target tracking
- Increase radar range
- Enhance visual display
- Inaccurate target positioning
Inaccurate target positioning
What is the purpose of the trial maneuver in radar operation?
- To test the radar capabilities in maneuvering
- To assess the performance of the ARPA system
- To measure the speed of the vessel
- To determine the potential target in collision
To determine the potential target in collision
What should be done if a target is lost due? to poor radar return?
- Change the radar setting
- Continue searching for the target
- Ignore the target
- Change range setting
Change the radar setting
What is the main risk associated with over-reliance on ARPA?
- Increase accuracy
- Enhance navigational safety
- Reduce need for visual lookout
- Improve radar performance
Reduce need for visual lookout
Which of the following describes the characteristics of a good radar conspicuous object?
- To produce a poor response that is difficult to identify
- They’re visually obscured by par? but can be detected by radar
- They produce a good response that can be positively identified
- They are typically relied upon on moving target
They produce a good response that can be positively identified
What could be the effect of incorrect speed setting on true motion display?
- Improve target detection
- Accurate course prediction
- Misleading display tracks
- Enhance radar performance
Misleading display tracks
When assessing the performance of a radar system, which factor is crucial to ensure accurate reading?
- The color of the display
- The position of the operational controls
- The type of radar used
- The weather condition
The position of the operational controls/The weather condition
What is the purpose of the performance monitor in a radar system?
- To display any record changes
- To record data and monification?
- To adjust the radar’s brightness
- To change the presentation mode
To record data and monification?
How does 0 speed control function in a radar system?
- It stops the movement of the own ship on the PPI
- It percepts? the radar display
- It adjusts the speed input
- It changes the presentation mode
It stops the movement of the own ship on the PPI
When interpreting the track rate over the ground (speed over ground) by own ship, why is it important to distinguish between course made good and track made good?
- To ensure accurate navigation
- To simplify radar operation
- To reduce the workload of the operator
- To comply with the standard performance
To ensure accurate navigation
What does the term ‘maladjustment’ refer to in radar operation?
- Correct setting of control
- Poor or faulty? adjustments
- Bad optimum? performance level
- Not properly maintain
Poor or faulty? adjustments
If radar shows log fail, what does it indicate?
- The radar is functioning normally
- The speed log is not providing data
- The radar needs recalibration?
- The display mode needs to be changed
The speed log is not providing data
What could be the consequence of incorrect speed setting of true motion?
- Enhance target visibility
- Misleading display track?
- Accurate course prediction
- Improve radar performance
Misleading display track?
Why is it important to monitor radar system performance regularly?
- To ensure radar is visually appealing
- To maintain optimal detection capabilities
- To reduce the workload of the operator
- To comply with international regulations
To maintain optimal detection capabilities
If tasked with improving target detection in fogging condition, which modification would be most effective?
- Increase the radar brightness
- Implement echo change
- Change the display mode to north up
- Reduce the radar range
Implement echo change
What innovative method will be used to enhance radar performance in detecting small vessels?
- Use passive? change like corner reflector
- Decrease radar range
- Increase radar brightness
- Change display to? true motion
Use passive? change like corner reflector
How does true motion known? differ from relative motion?
- True motion shows fixed targets as stationary
- Relative motion shows fixed targets are moving
- True motion is only for land targets
- Relative motion is more accurate
True motion shows fixed targets as stationary
If a radar operator needs to take corrective action due to a detected error, what should be done first?
- Change the radar setting
- Analyze the source of the error
- Ignore the error
- Reboot the radar system
Analyze the source of the error
Guardzone should be regarded as ________ rather than an alternative means of keeping a proper lookout.
- Exception
- Additional
- Assistance
- Inclusive
Assistance
According to colreg rule no.5, which display characteristics shown the predicted motion of target
- true motion?
- vector
- head? of display
- attention? point of collision
vector
To assist collision avoidance, when should the radar to be used according to the guidelines
- when it is badly needed
- only during traffic separation
- at all times in suggested? matter
- only at dark height?
at all times in suggested? matter
What should be done if target is lost on radar
- ignore it
- wait ??? for it to be acquired
- change course immediately
- continue searching for the echo
continue searching for the echo
which of the following is not a characteristic of ??? arpa
- automatic target acquisition
- continues tracking of targets
- manual plotting only
- display of related area of danger
manual plotting only
What does the term? target SWOP? refer to
- it change the target characteristic
- a maneuver to avoid collision
- a successful acquisition? of the target
- incorrect acquisiton of radar data with another target
incorrect acquisition of radar data with another target.
which of the following is a requirement for arpa target tracking
- it must track at least 10 targets
- it must track only moving target
- it must track dangerous target
- it must track at least 20 targets
it must track at least 20 targets
What shoukd be done if arpa system indicates a malfunction
- continue using it without changes
- ignore the warning
- follow the self diagnostic routine
- turn off the system
follow the self diagnostic routine
what is the role of the digital print-out? in arpa
- to provide visual alert
- to indicate vessel heading
- to show weather condition
- to display course, speed, range and bearing
to display course, speed, range and bearing
what should be done to avoid over reliance on arpa
- use arpa exclusively
- trust arpa data without question
- ignore visual lookout
- regulary check the performance of radar
regulary check the performance of radar
what does the term azimuth quantisisation? refer to
- conversation? of material ??? to digital form
- the measurement of distance
- the speed of the vessel
- angle of radar beam
angle of radar beam
what is the recommended action if a target appears closer than the guard ring
- ignore the target
- activate an alarm
- the target will not be acquire
- change course immediately
activate an alarm
when assessing performance of radar system, which factor is crucial to ensure accurate reading
- the color of the display
- the position of the operational control
- the time of radar used
- the weather condition
the position of the operational control
If the radar operator notices excessive brilliance on the display, what should they do
- increase the contrast
- ignore the issue
- change the display mode
- decrease the brightness
decrease the brightness
which mode stabilize the radar display relative to the ship inteded course
- true motion
- relative motion
- course up
- north up
course up
how does the performance monitor help in radar operation
- it records the radar data and modification
- it display ships inaccuracy
- it changes the radar’s contrast
- it adjust the radar range
it records the radar data and modification
