A.elevation
B.magnetic angle
C.vertical angle
D.dip
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A.divisional parts
B.coefficients
C.fractional parts
D.equations
A.compass error
B.latitude
C.variation
D.deviation
A.precession
B.earth rate
C.gyroscopic inertia
D.gravity effect
A.remove deviation on the intercardinal headings
B.remove deviation on the cardinal compass headings
C.remove heeling error
D.compensate for induced magnetism in vertical soft iron
A.reduce the variation as much as possible
B.reduce the deviation as much as possible
C.reduce the magnetic dip as much as possible
D.allow the compass bowl to swing freely on its gimbals
最新試題
When adjusting a magnetic compass for error，a deviation table should be made（）.
What is the name of the movable，radial guide line used to measure direction on a radar?（）
While in drydock your vessel will be belt-gauged.This process involves（）.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.
What is the basic principle of the magnetic compass?（）
Variation is the angular measurement between（）.
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?（）