When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation ________．A.The objects lie in a straight lineB.The vessel is inside of a triangle formed by the objectsC.The vessel is outside of a triangle formed by the objectsD.A circle will pass through your position and the three objects
When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation ________．
A.The objects lie in a straight line
B.The vessel is inside of a triangle formed by the objects
C.The vessel is outside of a triangle formed by the objects
D.A circle will pass through your position and the three objects
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If the acquisition symbol flashes three times when acquisition is attempted，it may be possible that the acquisition symbol ________ over the navigation mark．A.is not positioned properlyB.is not a fixed positionC.is not at a position fixedD.is a wrong position
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to ______.A.the meridian through the object of the bearingB.the meridian through the ship's positionC.the meridian midway between the ship and the objectD.any meridian
You are running parallel to the coast and take a running fix using bearings of the same object．If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be ______．A.Closer to the coastB.Farther from the coastC.On the track line ahead of the fixD.On the track line behind the fix
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A vessel’s position should be plotted using bearings of ______.A.buoys close at handB.fixed known objects on shoreC.buoys at a distanceD.All of above
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What are three relevant design considerations when using the 15216 EDFA? （）(Choose three.)A、dispersionB、Optical SNRC、span attenuationD、four wave mixingE、receiver sensitivity
单选题You should plot your dead reckoning position at（）.Aevery fix or running fixBevery course changeCevery speed changeDAll of the above are correct
单选题You should plot your dead reckoning position（）.AFrom every fix or running fixBFrom every estimated positionCEvery three minutes in pilotage watersDOnly in pilotage waters
单选题At 0400 your vessel is dead in the water and in heavy fog. Your loran set fixes your position at LAT 41°12.1’N，LONG 72°43.5’W. Bottom samples are taken and indicate a composition of soft mud and shell. Your fathometer reads 40 feet. If the vessel draws 9 feet of water，which of the following is TRUE?（）AThe bottom samples and fathometer reading prove the loran fix is reliableBThe bottom samples and fathometer readings indicate that the loran fix is unreliableCThe information collected indicates that the fathometer may be in errorDThe information collected indicates that the chart is most likely in error
单选题A line of position is（）.Aa line connecting two charted objectsBa line on some point of which the vessel may be presumed to be locatedCthe position of your vesselDnot used in a running fix
单选题When your vessel is proceeding to the area of traffic density,（）is used to determine the exact ranges of other ships or objects in the vicinity.AradarBGPSCDFDsatellite navigator
单选题When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.Athe meridian through the object of the bearingBthe meridian through the ship's positionCthe meridian midway between the ship and the objectDany meridian
单选题When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation（）.AThe objects lie in a straight lineBThe vessel is inside of a triangle formed by the objectsCThe vessel is outside of a triangle formed by the objectsDA circle will pass through your position and the three objects
单选题You are running parallel to the coast and take a running fix using bearings of the same object.If you are making less speed than used for the running fix，in relation to the position indicated by the fix，you will be（）.ACloser to the coastBFarther from the coastCOn the track line ahead of the fixDOn the track line behind the fix
单选题A position obtained by applying only your vessel’s coures and speed to a known position is a（）.Adead-reckoning positionBfix B.estimated positionCprobable positionDrunning fix
单选题A position obtained by applying only your vessel’s course and speed to a known position is a （）.Adead-reckoning positionBfixCprobable positionDrunning fix
单选题（）is used for measuring horizontal and vertical angles.AThe marine sextantBThechronometerCThe magnetic compassDThe gyrocompass
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单选题A single line of position combined with a dead-reckoning position results in a(n)（）.Aestimated positionBassumed positionCfixDrunning fix
单选题A vessel’s position should be plotted using bearings of（）.Abuoys close at handBfixed known objects on shoreCbuoys at a distanceDAll of the above
单选题When using the lifeboat compass，you must be careful to（）.Aset it on the centerline of the boatBapply the correction for compass errorCkeep metal objects away from itDAll of the above
多选题What are three relevant design considerations when using the 15216 EDFA? （）(Choose three.)AdispersionBOptical SNRCspan attenuationDfour wave mixingEreceiver sensitivity
单选题When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.A10 metersB20 metersC50 metersD100 meters
单选题When using the radar for navigating（）.Athe best fix is obtained by using a tangent bearing and a rangeBand using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearingsCand using ranges，the most rapidly changing range should be measured lastDand crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart
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单选题When out of sight of land, a ship’s position can be found by using（）.Athe coastal navigationBthe celestial navigationCtraditional navigationDthe great circle navigation