Flinders bar
transverse magnets
fore-and-aft magnets
soft iron spheres on the sides of the compass
第1题:
Which magnetic compass corrector(s)CANNOT be set on a heading of magnetic east or magnetic west ________.
A.Heeling magnet
B.Flinders bar
C.Fore-and-aft magnets
D.All of the above can be set on magnetic east or magnetic west headings
第2题:
Heeling error is defined as the change of deviation for a heel of ______.
A.2° while the vessel is on an intercardinal heading
B.1° while the vessel is on a compass heading of 000°
C.2° and is constant on all headings
D.1° while the vessel is on a compass heading of 180°
第3题:
The compass error of a magnetic compass that has no deviation is ______.
A.zero
B.equal to variation
C.eliminated by adjusting the compass
D.constant at any geographical location
第4题:
If the compass heading and magnetic-heading are the same then ______.
A.the deviation has been offset by the variation
B.there is something wrong with the compass
C.the compass is being influenced by nearby metals
D.there is no deviation on that heading
第5题:
Compass error is equal to the ______.
A.deviation minus variation
B.variation plus compass course
C.combined variation and deviation
D.difference between true and magnetic heading
第6题:
Deviation which is maximum on intercardinal compass headings may be removed by the ______.
A.Flinders bar
B.Transverse magnets
C.Fore-and-aft magnets
D.Soft iron spheres on the sides of the compass
第7题:
Compass deviation is caused by ______.
A.magnetism from the earth’s magnetic field
B.misalignment of the compass
C.magnetism within the vessel
D.a dirty compass housing
第8题:
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed,the watch officer should record the results ______.
A.in the vessel's Official Logbook
B.on the compass deviation card
C.in the compass deviation log
D.on a Napier diagram
第9题:
Deviation is the angle between the ______.
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
第10题:
Magnetic compass deviation______.
A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians