A.making a structural change to the vessel
B.a short circuit near the compass
C.belt buckles
D.All of the above
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A.accurate only in the Polar regions
B.accurate electronic servomechanisms
C.hand operated
D.accurate only if the vessel is underway
A.Magnetic compass table
B.Magnetic meridians
C.Isogonic lines
D.Variation is not indicated on small-scale nautical charts
A.radar
B.DF
C.Satellite Navigator
D.Automatic Omega Navigator
A.Compass error and variation are equal
B.Compass north will be true north
C.Variation will equal deviation
D.There will be no compass error
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
最新試題
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（）.
Compass error is equal to the（）.
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
Deviation in a compass is caused by the（）.
A radar display in which North is always at the top of the screen is a(n)（）.
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
The minimum range at which a target can be detected is basically determined by which of the following?（）.
A radar contact will remain stationary on a relative motion radar display only when it is（）.
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.