A.sea
B.current
C.tide
D.swell
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A.above
B.below
C.equal to
D.uncertain
A.varies
B.maintains
C.Shifts
D.assembles
A.UK Hydrographic Office
B.IMO
C.International Hydrographic Organization
D.International Association of Classification society
A.Being mroe than 25 miles from shore
B.Only at night when it‟s dark
C.Being more than 6 miles from shore
D.Never
A.Advection
B.Radiation fog
C.frontal fog
D.Steam fog
最新試題
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
Bales close to the deckhead should be covered to prevent（）.
Which of the following is not an operation mode of AIS?（）
The helm command PORT TWENTY means（）.
Fog is likely to occur when there is little difference between the dew point and the（）.
It is dangerous for vessels without the operational radar（）the estuary.
When steering by autopilot,how often should the steering be checked?（）
The loading of the ship must be done in accordance with（）.
Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?（）.
Before any loading takes place any signs of the previous cargo should do（）.