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
（）is not an alarm required by IMO standards to be available on the ECDIS.
Automatic identification systems（AIS）are required to（）.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.
What does not contribute to the commercial GPS receiver position error（）.
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
The operation of which aids to navigation may be suspended during war or national emergency（）.
The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.
The heading of a vessel is indicated by what part of the compass? （）
Which of the following statements is TRUE regarding crane operations（）.