A.always shows true north direction
B.indicates the vessel's heading
C.is always parallel to the vessel's transom
D.is located on the compass card
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A.deviation
B.variation
C.compass error
D.dip
A.damping error
B.ballistic deflection
C.quadrantal error
D.speed error
A.needles are nearly in line with the meridian
B.vessel is near the magnetic poles
C.variation is near zero
D.vessel is near the magnetic equator
A.induced magnetism in vertical soft iron
B.induced magnetism in horizontal soft iron
C.permanent magnetism in ship's steel
D.vessel's inclination from the vertical
A.variation
B.deviation
C.compass error
D.bearing error
最新試題
The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.
What is the basic principle of the magnetic compass（）.
While in drydock your vessel will be belt-gauged.This process involves（）.
What is an advantage of the magnetic compass aboard vessels?（）
When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）
When crossing the magnetic equator the（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
The Flinders bar on a magnetic compass compensates for the（）.
What is the basic principle of the magnetic compass?（）
Variation is the angular measurement between（）.