A.one short blast
B.one prolonged blast
C.two short blasts
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A.the assistant officer
B.the captain
C.the officer on duty
D.the third officer
A.Both vessels
B.Neither vessel
C.The stand-on vessel
D.The giving-way vessel
A.in numbers
B.with marks
C.in block letters
D.with s mbols
A.shallow water ahead of you
B.submerged wreck ahead of you
C.risk of collision imminent
D.A, B, C are all right
A.in
B.on
C.out
D.about
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Manoeuvring information can not be obtained from（）.
Full details of all lights and fog signals are shown on（）.
Fog is likely to occur when there is little difference between the dew point and the（）.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.
It is dangerous for vessels without the operational radar（）the estuary.
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
According to the relevant regulation, lifeboat should be powered by（）.
Which of the following is not a form of precipitation?（）
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.