The permanent magnetism of a vessel may change in strength due to ______.A.the nature of the cargo being carriedB.changes in headingC.major structural repairD.All of the above
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
相关考题：
The best method of determining if a vessel is dragging anchor is to note ______.A.the amount of line paid outB.how much the vessel sheers while at anchorC.any change in the tautness of the anchor chainD.changes in bearings of fixed objects onshore
A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit ______.A.the masthead lights for a towing vesselB.the lights for a vessel restricted in its ability to maneuverC.sidelights，stern light and towing lightD.All of the above
A ship under construction or major repair will acquire permanent magnetism due to ______ while sitting stationary in the earth's magnetic field．A.hammering and jarringB.vibration and poundingC.varying magnetic fieldsD.stable or permanent magnetism of the ship
This induced magnetism ______ the permanent magnetism already present in the ship．A.will add toB.will subtract fromC.may add to or subtract fromD.will not change
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 headingsB.After the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustmentC.During the course change，you should gently tap the compass to remove any error caused by friction on the pivot bearingD.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
The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed ______．A.permanent magnetismB.subpermanent magnetismC.induced magnetismD.variable magnetism
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 necessaryB.SemiannuallyC.AnnuallyD.Every five years
A single vertical magnet placed underneath the compass in the binnacle is used to compensate for ______．A.The horizontal component of the permanent magnetismB.Deviation caused by the vessel's inclination from the verticalC.Induced magnetism in the horizontal soft ironD.Induced magnetism in the vertical soft iron
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 draftB.the nature of her workC.some exceptional circumstancesD.a danger of navigation
If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism ______.A.increasesB.remains the sameC.decreasesD.is unimportant and may be neglected
Magnetism which is present only when the material is under the influence of an external field is called ______.A.permanent magnetismB.induced magnetismC.residual magnetismD.terrestrial magnetism
单选题Your vessel was damaged and initially assumed a significant list and trim; however，further increase has been slow. Based on this data，what should you expect?（）AThe slowing is only temporary and the vessel will probably suddenly capsize or plunge from loss of stability due to change in the waterplane areaBThe vessel can probably be saved if further flooding can be stoppedCThe vessel will continue to slowly list and/or trim due to the free surface effect and free communication effectDThe vessel will suddenly flop to the same or greater angle of list on the other side and may capsize
单选题If a ship is proceeding towards the magnetic equator，the uncorrected deviation due to permanent magnetism（）.AincreasesBremains the sameCdecreasesDis unimportant and may be neglected
单选题Water may boil up around the stern of a vessel in a channel due to（）.Aslack water when upboundBshallow waterCa cross currentDa head current
单选题When using an ARPA，what should you consider in order to evaluate the information displayed?（）AThe target vessel's generated course and speed are based solely on radar inputsBNavigational constraints may require a target vessel to change courseCThe trial maneuver feature will automatically determine a course that will clear all targetsDYou cannot determine if a small target has been lost due to sea return
单选题This induced magnetism（）the permanent magnetism already present in the ship.Awill add toBwill subtract fromCmay add to or subtract fromDwill not change
单选题The permanent magnetism of a vessel may change in polarity due to（）.Abeing moored for a long time on one headingBbeing struck by lightingCsteaming from the north magnetic hemisphere to the south magnetic hemisphereDloading a homogenous magnetic cargo such as steel plate，iron bars，etc
单选题The permanent magnetism of a vessel may change in strength due to（）.Aa collision with another vesselBbeing moored on a constant heading for a long period of timeCbeing struck by lightningDAll of the above
单选题When shall the stand-on vessel change course and speed?（）Athe stand-on vessel may change course and speed at any time as it has the right of wayBafter the give-way vessel sounds one blast in a crossing situationCwhen action by the give-way vessel alone cannot prevent collisionDwhen the two vessels become less than half a mile apart
单选题The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.AThey are not subject to permanent magnetism; no check is necessaryBSemiannuallyCAnnuallyDEvery five years
单选题Due to the nature of a vessel’s construction for a particular trade，it does not fully comply with the provisions of SOLAS. Where will this be indicated?（）.AOn the Exemption CertificateBOn the reverse of the particular SOLAS certificate affectedCOn the face of the Certificate of InspectionDNowhere； the vessel must engage in international trade
单选题The permanent magnetism of a vessel may change in strength due to（）.Athe nature of the cargo being carriedBchanges in headingCmajor structural repairDAll of the above
单选题Permanent magnetism is found in（）.Ahard ironBsoft ironCvertical iron onlyDhorizontal iron only
单选题A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.Ahammering and jarringBvibration and poundingCvarying magnetic fieldsDstable or permanent magnetism of the ship
单选题Due to the nature of a vessel’s construction for a particular trade，it does not fully comply with the provisions of SOLAS. Where will this be indicated? （）AOn the Exemption CertificateBOn the reverse of the particular SOLAS certificate affectedCOn the face of the Certificate of InspectionDNowhere; the vessel must comply to engage in international trade
单选题A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.Athe horizontal component of the permanent magnetismBdeviation caused by the vessel's inclination from the verticalCinduced magnetism in the horizontal soft ironDinduced magnetism in the vertical soft iron
单选题Magnets are placed in horizontal trays in the compass binnacle to compensate for the（）.Ainduced magnetism in the vessel's horizontal soft ironBchange in the magnetic field when the vessel inclines from verticalCpermanent magnetism of the vesselDmagnetic fields caused by electrical currents in the vicinity