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
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
Loran-C uses the multiple pulse system because（）.
The line connecting the Loran-C master station with a secondary station is called the（）.
Which statement concerning GPS is TRUE（）.
（）is a digitized“picture”of a chart.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
The heading of a vessel is indicated by what part of the compass? （）
To obtain accuracy in fixing by DF，（）and three stations should be used.
The information received by AIS will be displayed on（）.
Which one of the followings does not limit the effective range of radar（）.