A.VHF
B.Steering Gear
C.Rudder Indicator
D.Loran
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A.make
B.be made
C.not make
D.not be made
A.remains aligned with compass north
B.also turns to starboard
C.first turns to starboard then counterclockwise to port
D.turns counterclockwise to port
A.spider element
B.mercury ballistic
C.gyrotron
D.rotor
A.the horizontal component of the permanent magnetism
B.deviation caused by the vessel's inclination from the vertical
C.induced magnetism in the horizontal soft iron
D.induced magnetism in the vertical soft iron
A.bearing circle
B.pelorus
C.bearing bar
D.alidade
最新試題
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
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.
The（）transmits own ship data cyclically via two defined VHF channels and receives the same data of the other ships and objects that are equipped with AIS systems.
To obtain accuracy in fixing by DF，（）and three stations should be used.
The information received by AIS will be displayed on（）.
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
The loran lines drawn on navigation charts represent（）.
Which of the following statements is TRUE regarding crane operations（）.