The Flinders bar on a magnetic compass compensates for the（）

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

Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south ________．

A.Quadrantal spheres

B.Heeling magnets

C.Flinders bar

D.Fore-and-aft magnets

Which one of the followings is incorrect about magnetic compass?______.

A.The magentic compass is compulsory on my vessel

B.The magentic compass is prone to error

C.The magentic compass is always placed inside steel constructions

D.The magentic compass needs to be calibrated to compensate for local magnetic distortion

You are about to go to sea and adjust the magnetic compass．To expedite the adjustment at sea，in what order should the following dockside adjustments be made ________．

A.Flinders bar first，then the heeling magnet and spheres

B.Heeling magnet first，then the Flinders bar and spheres

C.Flinders bar first，then the spheres and heeling magnet

D.Spheres first，then the Flinders bar and heeling magnet

Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism．These correctors are the ______．

A.Fore-and-aft and athwartships magnets

B.Dip needle and heeling magnet

C.Heeling magnet and Flinders bar

D.Flinders bar and quadrantal spheres

When crossing the magnetic equator the ______．

A.Flinders bar should be inverted

B.Heeling magnet should be inverted

C.The quadrantal spheres should be rotated 180°

D.Flinders bar should be moved to the opposite side of the binnacle

Which compensates for errors introduced when the vessel heels over ________．

A.The soft iron spheres on the arms of the binnacle

B.Magnets placed in trays inside the binnacle

C.A single vertical magnet beneath the compass

D.The Flinders bar

A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?

A.Move the quadrantal spheres closer to the compass

B.Raise the heeling magnet if the red end is up

C.Remove some of the Flinders bar

D.Raise or lower the athwartship magnets

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

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