When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed,the watch officer should record the results ______.A.in the vessel's Official LogbookB.on the compass deviation cardC.in the compass deviation logD.on a Napier diagram

When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed,the watch officer should record the results ______.

A.in the vessel's Official Logbook

B.on the compass deviation card

C.in the compass deviation log

D.on a Napier diagram


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standard deviation

单选题Deviation is caused by().Achanges in the earth's magnetic fieldBnearby magnetic land masses or mineral depositsCmagnetic influence inherent to that particular vesselDthe magnetic lines of force not coinciding with the lines of longitude

单选题Deviation in a compass is caused by the().Avessel's geographic positionBvessel's headingCearth's magnetic fieldDinfluence of the magnetic materials of the vessel

单选题If the magnetic heading is greater than the compass heading,the deviation is().AeastBwestCnorthDsouth

单选题If the compass heading and the magnetic heading are the same then().Athe deviation has been offset by the variationBthere is something wrong with the compassCthe compass is being influenced by nearby metalsDthere is no deviation on that heading

单选题The principal purpose of magnetic compass adjustment is to().Areduce the variation as much as possibleBreduce the deviation as much as possibleCreduce the magnetic dip as much as possibleDallow the compass bowl to swing freely on its gimbals

单选题The lubber’s line on a magnetic compass indicates().Acompass northBthe direction of the vessel's headCmagnetic northDa relative bearing taken with an azimuth circle

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单选题When adjusting a magnetic compass for error,a deviation table should be made().Abefore correcting for any deviationBafter correcting for variationCafter adjusting the fore-and-aft and athwartships permanent magnetsDbefore the quadrantal correctors are placed on the compass