The permanent magnetism of a vessel may change in strength due to ______.
A.the nature of the cargo being carried
B.changes in heading
C.major structural repair
D.All of the above
第1题:
When a vessel changes course from one cardinal heading to another cardinal heading while adjusting the compass,which action should be taken ________.
A.The course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headings
B.After the new heading is reached,the vessel should steam on that course for at least two minutes before the adjustment
C.During the course change,you should gently tap the compass to remove any error caused by friction on the pivot bearing
D.After steadying on the new heading,the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error
第2题:
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval ________.
A.They are not subject to permanent magnetism; no check is necessary
B.Semiannually
C.Annually
D.Every five years
第3题:
A vessel that is defined as restricted in her ability to manoeuver is unable to keep out of the way of another vessel due to ______.
A.her draft
B.the nature of her work
C.some exceptional circumstances
D.a danger of navigation
第4题:
Magnetism which is present only when the material is under the influence of an external field is called ______.
A.permanent magnetism
B.induced magnetism
C.residual magnetism
D.terrestrial magnetism
第5题:
increases
remains the same
decreases
is unimportant and may be neglected
第6题:
The target vessel's generated course and speed are based solely on radar inputs
Navigational constraints may require a target vessel to change course
The trial maneuver feature will automatically determine a course that will clear all targets
You cannot determine if a small target has been lost due to sea return
第7题:
being moored for a long time on one heading
being struck by lighting
steaming from the north magnetic hemisphere to the south magnetic hemisphere
loading a homogenous magnetic cargo such as steel plate,iron bars,etc
第8题:
the stand-on vessel may change course and speed at any time as it has the right of way
after the give-way vessel sounds one blast in a crossing situation
when action by the give-way vessel alone cannot prevent collision
when the two vessels become less than half a mile apart
第9题:
On the Exemption Certificate
On the reverse of the particular SOLAS certificate affected
On the face of the Certificate of Inspection
Nowhere; the vessel must engage in international trade
第10题:
hard iron
soft iron
vertical iron only
horizontal iron only
第11题:
On the Exemption Certificate
On the reverse of the particular SOLAS certificate affected
On the face of the Certificate of Inspection
Nowhere; the vessel must comply to engage in international trade
第12题:
induced magnetism in the vessel's horizontal soft iron
change in the magnetic field when the vessel inclines from vertical
permanent magnetism of the vessel
magnetic fields caused by electrical currents in the vicinity
第13题:
The magnetism in the various structures of a ship changing as a result of cruising,vibration,or aging is termed ______.
A.permanent magnetism
B.subpermanent magnetism
C.induced magnetism
D.variable magnetism
第14题:
A single vertical magnet placed underneath the compass in the binnacle is used to compensate for ______.
A.The horizontal component of the permanent magnetism
B.Deviation caused by the vessel's inclination from the vertical
C.Induced magnetism in the horizontal soft iron
D.Induced magnetism in the vertical soft iron
第15题:
If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism ______.
A.increases
B.remains the same
C.decreases
D.is unimportant and may be neglected
第16题:
The slowing is only temporary and the vessel will probably suddenly capsize or plunge from loss of stability due to change in the waterplane area
The vessel can probably be saved if further flooding can be stopped
The vessel will continue to slowly list and/or trim due to the free surface effect and free communication effect
The vessel will suddenly flop to the same or greater angle of list on the other side and may capsize
第17题:
slack water when upbound
shallow water
a cross current
a head current
第18题:
will add to
will subtract from
may add to or subtract from
will not change
第19题:
a collision with another vessel
being moored on a constant heading for a long period of time
being struck by lightning
All of the above
第20题:
They are not subject to permanent magnetism; no check is necessary
Semiannually
Annually
Every five years
第21题:
the nature of the cargo being carried
changes in heading
major structural repair
All of the above
第22题:
hammering and jarring
vibration and pounding
varying magnetic fields
stable or permanent magnetism of the ship
第23题:
the horizontal component of the permanent magnetism
deviation caused by the vessel's inclination from the vertical
induced magnetism in the horizontal soft iron
induced magnetism in the vertical soft iron