WorksheetsGyro Compass Errors & Corrections Quiz
Total questions: 25
Worksheet time: 13mins
When a vessel changes latitude, the gyro compass may precess. What correction is applied?
Adjusting the latitude compensator system carefully
Increasing the pendulum damping manually
Reducing the applied torque consistently
Securing the compass housing firmly
If damping is insufficient, what action should be taken?
Adjust damping according to manufacturer’s guidance
Increase ship’s speed during maneuvers steadily
Apply torque to stabilize the compass system
Secure the compass against external vibration
A navigator notices oscillations in the compass due to poor damping. What should be done?
Adjust the pendulum damping as recommended
Reduce ship’s rolling by altering course slowly
Secure the compass housing against vibration
Apply torque to stabilize the compass system
Latitude error is minimized by:
Using the automatic latitude compensator system
Applying torque to stabilize the compass system
Securing the compass housing against vibration
Increasing ship’s speed during maneuvers steadily
Rapid course changes cause gyro compass errors. How can these be minimized?
Ensure gradual course changes whenever possible
Adjust pendulum damping according to guidance
Secure the compass housing against vibration
Apply torque to stabilize the compass system
Speed changes affect gyro compass accuracy. What is the corrective action?
Keep vessel speed steady during navigation
Adjust pendulum damping according to guidance
Secure the compass housing against vibration
Apply torque to stabilize the compass system
Some gyro compasses reduce course and speed errors by:
Using built-in compensation features effectively
Adjusting pendulum damping according to guidance
Securing the compass housing against vibration
Applying torque to stabilize the compass system
During rapid maneuvers, the compass shows deviation. What should be done?
Stabilize vessel movements and avoid abrupt changes
Adjust pendulum damping according to guidance
Secure the compass housing against vibration
Apply torque to stabilize the compass system
Tilt error occurs when the compass is:
Inclined from its horizontal position incorrectly
Subjected to rapid course changes repeatedly
Affected by ship’s rolling continuously
Influenced by acceleration forces temporarily
What system minimizes tilt error?
Leveling system ensuring horizontal alignment
Pendulum damping adjusted according to guidance
Compensation features reducing course deviations
Torque reduction securing compass housing firmly
Crew action to reduce tilt error includes:
Regularly checking and adjusting compass level
Applying torque to stabilize the compass system
Securing the compass housing against vibration
Increasing ship’s speed during maneuvers steadily
Tilt error is minimized by:
Ensuring compass remains horizontal consistently
Adjusting pendulum damping according to guidance
Securing the compass housing against vibration
Applying torque to stabilize the compass system
Ballistic deflection is minimized by:
Keeping ship’s speed steady and avoiding rapid accelerations
Adjusting pendulum damping according to guidance
Securing the compass housing against vibration
Applying torque to stabilize the compass system
Pendulum movement errors are reduced by:
Adequate damping adjusted as recommended
Keeping ship’s speed steady and avoiding rapid accelerations
Securing the compass housing against vibration
Applying torque to stabilize the compass system
Excessive vibration introduces errors. What should be done?
Secure the compass properly against external forces
Adjust pendulum damping according to guidance
Keep ship’s speed steady and avoid rapid accelerations
Apply torque to stabilize the compass system
Applied torque errors are minimized by:
Reducing vibration and securing compass firmly
Adjusting pendulum damping according to guidance
Keeping ship’s speed steady and avoiding rapid accelerations
Applying torque to stabilize the compass system
Liquid ballistic compasses are affected by:
Ship’s rolling during navigation operations
Rapid course changes during maneuvers
Inclination from horizontal position incorrectly
Acceleration forces acting temporarily
Correction for rolling errors includes:
Proper installation and maintenance of liquid ballistic compass
Adjusting pendulum damping according to guidance
Securing the compass housing against vibration
Applying torque to stabilize the compass system
Rolling influence is minimized by:
Limiting vessel motion during critical navigation operations
Adjusting pendulum damping according to guidance
Securing the compass housing against vibration
Applying torque to stabilize the compass system
Older vessels face rolling errors due to:
Liquid ballistic compass affected by ship’s rolling
Rapid course changes during maneuvers
Inclination from horizontal position incorrectly
Acceleration forces acting temporarily
Intercardinal errors occur when:
Compass misaligns with cardinal points incorrectly
Ship’s rolling affects liquid ballistic compass
Rapid course changes during maneuvers
Acceleration forces acting temporarily
Correction for intercardinal errors includes:
Using adjustment features and calibration procedures
Adjusting pendulum damping according to guidance
Securing the compass housing against vibration
Applying torque to stabilize the compass system
Regular checks are needed to:
Adjust compass alignment and minimize intercardinal errors
Secure compass housing against vibration consistently
Apply torque to stabilize the compass system
Increase ship’s speed during maneuvers steadily
Intercardinal errors are minimized by:
Calibration and adjustment of compass alignment
Adjusting pendulum damping according to guidance
Securing the compass housing against vibration
Applying torque to stabilize the compass system
Acceleration errors occur when:
Compass subjected to rapid acceleration or deceleration
Ship’s rolling affects liquid ballistic compass
Compass inclined from horizontal position incorrectly
Rapid course changes during maneuvers
