A.magnetism from the earth's magnetic field
B.misalignment of the compass
C.magnetism within the vessel
D.a dirty compass housing
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A.fore-and-aft and athwartships magnets
B.dip needle and heeling magnet
C.heeling magnet and Flinders bar
D.Flinders bar and quadrantal spheres
A.Decreasing loran readings on 9960-W
B.Visual bearings of Montauk Point Lt. changing to the left
C.Increasing bearings of Southeast Point Light
D.Decreasing soundings
A.enter a traffic separation zone
B.cross a submerged pipeline
C.depart a regulated area
D.depart a restricted area
A.spider element
B.sensitive element
C.link arm
D.pickup transformer
A.VHF
B.Steering Gear
C.Rudder Indicator
D.Loran
最新試題
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
Which of the following statements is TRUE regarding crane operations（）.
The operation of which aids to navigation may be suspended during war or national emergency（）.
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.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
The loran lines drawn on navigation charts represent（）.