Isogonic lines are lines on a chart indicating ______.A.points of equal variationB.points of zero variationC.the magnetic latitudeD.magnetic dip

Isogonic lines are lines on a chart indicating ______.

A.points of equal variation

B.points of zero variation

C.the magnetic latitude

D.magnetic dip


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单选题Isogonic lines are lines on a chart indicating ().Apoints of equal variationBpoints of zero variationCthe magnetic latitudeDmagnetic dip

单选题A “figure eight” knot is used to().Abe a stopperBshorten a lineCjoin lines of equal sizeDkeep a line from passing through a sheave

单选题The square knot is used for().Aforming temporary eyes in linesBjoining two lines of equal sizeCkeeping line from unlaying or frayingDjoining two lines of different size

单选题No navigational aids are shown and the chart is not kept corrected for alterations in depths inside the pecked lines. For more detailed information, the larger scale charts must be().Areferred toBappreciatedCmet withDconcerned

单选题Lines on a chart which connect points of equal magnetic variation are called ().Amagnetic latitudesBmagnetic declinationsCdipDisogonic lines

单选题The rolling hitch could be used to().Ajoin two lines of different sizesBjoin two lines of equal sizesCadd strength to a weak spot in a lineDact as a stopper to transfer a line under strain

单选题The International Load Line Certificate is a document indicating () of the various load lines of the vessel.AdecksBcabinsCholdsDpositions

单选题How is the annual rate of change for magnetic variation shown on a pilot chart?()AGray lines on the uppermost inset chartBRed lines on the main body of the chartCIn parenthesis on the lines of equal magnetic variationDAnnual rate of change is not shown

单选题Which information is found in the chart title().AA rhumb line appears as a straight lineBDistance is measured at the midlatitude of the track lineCMeridians appear as curved lines converging toward the nearer poleDParallels,except the equator,appear as curved lines

单选题All straight lines represent great circle tracks on a chart based on a(n) ().AMercator projectionBpolyconic projectionCorthographic projectionDgnomonic projection

单选题What is the basic principle of the magnetic compass().AMagnetic materials of the same polarity repel each other and those of opposite polarity attractBThe Earth's magnetic lines of force are parallel to the surface of the EarthCMagnetic meridians connect points of equal magnetic variationDThe compass needle(s)will,when properly compensated,lie parallel to the isogonic lines of the Earth

单选题When moored with a Mediterranean moor,the ship should be secured to the pier by having().Aa stern line and two quarter lines crossing under the sternBa stern line,2 bow lines,and 2 quarter lines leading aft to the pierCall regular lines leading to the pier in opposition to the anchorDtwo bow lines and two midship lines leading aft to the pier

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单选题No navigational aids are shown and chart is not kept corrected for alterations in depths inside the pecked lines. For more detailed information, the larger scale charts must be().AboughtBanalyzedCconsultedDpublished

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