Welcome to the website where you can pass online the Seafarer Evaluation Training System (SETS) test on «Compasses». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. SETS based on practical information and marine specialists experience.
SETS tests developed for evaluating seaman basic knowledge by company “Naval Education Services” is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW Section A-V/1-2.
SETS tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew.
Current test contains SETS questions in area «Compasses». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.
«Compasses» subject includes theoretical and practical information about advanced training for work on any type of vessel. This subject provides essential knowledge about magnetic and gyrocompasses used in marine navigation. Participants learn the principles of magnetism, compass construction and factors affecting compass accuracy. The course covers the differences between magnetic compasses (affected by Earth’s magnetic field) and gyrocompasses (aligned with true north). Key topics include compass errors, such as variation (due to Earth’s magnetic field) and deviation (caused by ship’s metal structures). Practical training involves compass adjustment, compensating for deviations and using correctors to minimize errors. The subject also explores modern electronic compasses and their integration with GPS and ECDIS systems. Understanding compasses is critical for safe navigation, especially during manual steering and emergency situations. Proper compass knowledge ensures compliance with SOLAS (Safety of Life at Sea) regulations for vessel operations.
On this site SETS on the subject «Compasses» contains 36 questions you need to answer with no possibility to go back to previous question. Therefore, we recommend carefully reading each question and making decision with no hurry. In case you have some difficulty answering, you have also possibility to request a hint.
Choose the regime, in which you want to pass SETS test:
Training
Exam
Wild Mode
* Some questions may have more than 1 correct answer.
The point at which the helm must be applied to achieve a required course alteration is called the ……
wheel-over position.
way-point.
abort-point.
drift-point.
The gyro course is 332° and the gyro error is 2° minus. What is the true course?
330°.
334°.
328°.
332°.
Magnetic variation changes its value with …
True north.
Magnetic north.
Grid north.
Compass deviation.
How often the manual steering should be tested?
At least once a day.
At least once a watch.
At least once in a passage.
Prior to arrival and departure only.
Magnetic variation for a particular place on the Earth slowly and constantly changes because …
Complex fluid motion in the outer core of the Earth causes the magnetic field to change slowly with time. This change is known as secular variation.
The Earth’s rotation affects the magnetic field.
Solar activity influences the magnetic variation.
Tectonic movements alter the magnetic field.
The angle between the magnetic north and the true north is ……
MAGNETIC INCLINATION.
MAGNETIC VARIATION or DECLINATION.
TRUE BEARING.
COMPASS ERROR.
In what direction does the axis of the gyro compass motor normally point?
True North.
Magnetic North.
East.
South.
Precession in relation to a free gyroscope is …
the increase in speed of the gyroscope when spun faster.
the change of direction of the spin axis when a force is applied at right angles to the axis.
the tilt of the gyroscope when it is not balanced.
the effect of friction on the gyroscope’s movement.
The magnetic equator is …
the angle made by a compass needle with the horizontal at any point on the Earth’s surface.
the line where the magnetic field is zero.
the latitude where the magnetic declination is constant.
the point where true north and magnetic north align.
Magnetic compass – Var = 7W; Dev = 12 E; What is the compass error?
5 W.
5 E.
19 E.
19 W.
What is the main purpose of frequent record of the ship’s compasses courses and errors in a log or compass deviation book?
For checking technical condition of compass.
For navigation purposes only.
For training new crew members.
For compliance with regulations.
From those listed, which is NOT a way of destroying magnetism?
Heating magnet.
Placing another magnet next to it with unlike poles together.
Dropping the magnet on a hard surface.
Exposing the magnet to strong electric fields.
Where do you find a note of the annual rate of change in the magnetic variation at a place?
On the nautical chart for the particular sea area.
In the ship’s logbook.
In the weather forecast.
In the navigation manual.
Magnetic Compass – If var=6 E; dev=3 W. What is the compass error?
3 W.
3 E.
9 E.
9 W.
The gyro course is 165° and the gyro error is 3° plus. What is the true course?
168°.
162°.
170°.
165°.
Magnetic compass error is …
Magnetic north and true north.
Magnetic north and magnetic south.
True north and geographic south.
The two unique properties of a free gyroscope are …
stability and rotation.
inertia and momentum.
rigidity and precession.
To convert a compass course to a magnetic course, it is necessary to apply …..
variation.
compass error.
deviation.
none of the other answers.
Latitude, course and speed error of a gyro compass …
resulting from movement of the gyro compass in other than an east-west direction.
caused by magnetic interference.
related to compass deviation.
also known as speed error.
Curves on charts showing values of equal variation are called …
Isogonic lines.
Isobaric lines.
Isothermal lines.
Isochrone lines.
From those listed, which are «soft iron» correctors?
permanent magnets used for calibration.
electronic compensators.
gyroscopic stabilizers.
magnet, opposite to the effects of the magnetic material in the ship.
Leading lights are in line. True bearing is 126°. If the gyro error is 2° plus, what would the gyro bearing of the leading lights be?
124°.
126°.
128°.
130°.
To convert a magnetic course to a true course, it is necessary to apply ….
deviation.
compass error.
none of the other options.
variation.
How many points of the compass are there?
40.
24.
36.
32.
If ship’s head by compass was 045 (C), what is the true course if the variation is 5 W and the deviation is 9,5 W?
030,5 (T).
054,5 (T).
059,5 (T).
050 (T).
From those listed, which of the statements about magnetic variation is true?
Angle between magnetic north and true north.
Angle between magnetic north and grid north.
Angle between true north and grid north.
Angle between compass north and true north.
From those listed, which of the statements about the dip of a magnet is true?
Magnetic dip is the angle between magnetic north and true north.
Magnetic dip is the strength of the magnetic field.
Magnetic dip is the angle between the magnetic field and the vertical.
Magnetic dip or magnetic inclination is the angle made by a compass needle with the horizontal at any point on the Earth’s surface.
A gyro compass on a high-speed craft often takes time to settle correctly when altering course. What causes this problem in general?
Inertial oscillations.
Magnetic interference.
Electrical malfunctions.
Gyro drift.
Damping effect in a gyro compass produces …
increased sensitivity to magnetic fields.
a faster response to course changes.
a reduction in gyro drift.
a setting position exactly on the meridian.
If the true transit bearing of two leading lights is read off the chart and the compass bearing of the two lights, when in transit, is taken, then the difference between the two bearings so obtained is the ……
deviation.
variation.
magnetic bearing.
compass error.
The «magnetic variation» is the angle between …
magnetic north and the true north.
magnetic north and grid north.
true north and compass north.
compass north and grid north.
Magnetic compass deviation mainly changes with ….
longitude.
speed of the vessel.
weather conditions.
latitude.
How many degrees are there in each point of the compass?
15.
17.5.
12.
11.25.
How often should the magnetic compass error be checked?
Once a day.
Twice a day.
After each major alteration of course.
Once a watch and after a major course alteration.
If Var=8 W and Dev=4 W. What is the compass error?
4 W.
4 E.
12 E.
12 W.
When a force is applied to a free gyroscope, its axis moves …
at a RIGHT ANGLE to the APPLIED FORCE.
in the direction of the applied force.
opposite to the applied force.
in a circular motion around the applied force.
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