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
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A.vessel's geographic position
B.vessel's heading
C.earth's magnetic field
D.influence of the magnetic materials of the vessel
A.deviation minus variation
B.variation plus compass course
C.combined variation and deviation
D.difference between true and magnetic heading
A.magnetism from the earth's magnetic field
B.misalignment of the compass
C.magnetism within the vessel
D.a dirty compass housing
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
A.Decreasing loran readings on 9960-W
B.Visual bearings of Montauk Point Lt. changing to the left
C.Increasing bearings of Southeast Point Light
D.Decreasing soundings
最新試題
The（）transmits own ship data cyclically via two defined VHF channels and receives the same data of the other ships and objects that are equipped with AIS systems.
To obtain accuracy in fixing by DF，（）and three stations should be used.
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（）.
Would you please（）on the radar?
Which of the following statements is TRUE regarding crane operations（）.
Would you mind（）your DF?
（）is not an alarm required by IMO standards to be available on the ECDIS.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
Which statement concerning GPS is TRUE（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.