Compass deviation is caused by（）.

A single vertical magnet placed underneath the compass in the binnacle is used to compensate for ______．

A.The horizontal component of the permanent magnetism

B.Deviation caused by the vessel's inclination from the vertical

C.Induced magnetism in the horizontal soft iron

D.Induced magnetism in the vertical soft iron

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°

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

Deviation in a compass is caused by the ______.

A.vessel’s geographic position

B.vessel’s heading

C.earth’s magnetic field

D.influence of the magnetic materials of the vessel

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

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

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

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

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

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