A.Radio communications allow the crane operator to disregard the use of hand signals
B.The crane operators and signalman must be familiar with the correct hand signals
C.The forward cranes can be operated from the bridge
D.The aft cranes can be operated from the aft steering station
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A.AIS is a global tracking system that relies upon INMARSAT C service to communicate vessel position and other safety related information to similarly equipped vessels,aircraft and shore stations within the area
B.AIS is a short-range 3 cm X-band radar system that automatically sends a vessel's position and other safety related information to similarly equipped vessels,aircraft and shore stations within the area
C.AIS is a short-range VHF-FM system that automatically broadcasts a vessel's position and other safety related information frequently to similarly equipped vessels,aircraft and shore stations within the area
D.AIS is a one-way centrally managed system that requires the local VTS to send commands to instruct each vessel to broadcast position and other safety related information to similarly equipped vessels,aircraft and shore stations within the area
A.Radar
B.GPS
C.DF
D.Satellite Navigator
A.10 meters
B.20 meters
C.50 meters
D.100 meters
A.Satellite clock
B.Ship's speed
C.Atmospheric/ionospheric propagation
D.Receiver
A.Parallel bearings
B.Long-range bearings
C.Short-range bearings
D.Cross bearings
最新試題
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of().
Loran-C uses the multiple pulse system because().
The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found().
Most modern Loran-C receivers,when not tracking properly,have a(n)().
()is a digitized“picture”of a chart.
Automatic identification systems(AIS)are required to().
Which one of the followings does not limit the effective range of radar().
Which of the following statements is TRUE regarding crane operations().
With respect to automatic identification systems(AIS),which information is expected to be broadcast every 1 to 10 seconds().
When navigating using DGPS(Differential Global Positioning System)you may expect your position to be accurate to within a radius of().