A.Relative
B.TRUE
C.Compass
D.Magnetic
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A.magnetism from the earth's magnetic field
B.misalignment of the compass
C.magnetism within the vessel
D.a dirty compass housing
A.deviation minus variation
B.variation plus compass course
C.combined variation and deviation
D.difference between true and magnetic heading
A.vessel's geographic position
B.vessel's heading
C.earth's magnetic field
D.influence of the magnetic materials of the vessel
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
A.making a structural change to the vessel
B.a short circuit near the compass
C.belt buckles
D.All of the above
最新試題
A radar display in which North is always at the top of the screen is a(n)（）.
Error may be introduced into a magnetic compass by（）.
AREAS WHICH CANNOT BE SCANNED BY THE RADAR OF THE VESSEL BECAUSE THEY ARE SHIELDED BY PARTS OF ITS SUPERSTRUCTURE，MASTS，ETC means（）.
A deadhead is a(n)（）.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.
The microsecond unit of time is used in radar applications. The microsecond represents which of the following?（）.
An ECDIS is required to display which information?（）
Compass deviation is caused by（）.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.