A.pay away the chain
B.take in the chain
C.check up the chain
D.take a strain on the chain
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A.high winds
B.high overcast clouds
C.calm or light winds
D.fog or steady rain
A.sound the danger signal
B.when taking action, make only course changes
C.avoid altering course toward a vessel abaft the beam
D.All of the above
A.smaller scales
B.larger scales
C.smaller scales and larger scales
D.moderate scales
A.steady, constant winds
B.frequent rain showers and thunderstorms
C.steep pressure gradients
D.low relative humidity
A.high relative humidity
B.frequent showers and thunderstorms
C.steep pressure gradients
D.frequent calms
最新試題
When the wave period and the apparent rolling period are the same（）.
When steering by autopilot,how often should the steering be checked?（）
In the Northern hemisphere northerly winds may cause temperature（）.
（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
Manoeuvring information can not be obtained from（）.
Fog is likely to occur when there is little difference between the dew point and the（）.
The helm command PORT TWENTY means（）.
It is dangerous for vessels without the operational radar（）the estuary.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
Which of the following is not an operation mode of AIS?（）