A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.
1、A vessel is heading magnetic northwest
A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317°. What action should be taken to remove this error...
2、Vertically below the deckline is a cir
Vertically below the deckline is a circle whose outside diameter is 300mm.It is called the（）.Athe deck lineBPlimsoll discCPlimsoll lineDsummer load line
3、Before a magnetic compass is adjusted
Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. These correctors ...
4、When placed in a magnetic field, which
When placed in a magnetic field, which of the materials listed will maintain the highest permeability?（）AGlassBBakeliteCSoft ironDAluminum
5、The vertical movement of a vessel in t
The vertical movement of a vessel in the water is called（）.ApitchBswayCheaveDroll
6、Magnetic dip is a measurement of the a
Magnetic dip is a measurement of the angle between the（）.Ageographic pole and the magnetic poleBlubber's line and true northChorizontal and the magnetic line of forceDcompass heading and the magnetic heading