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单选题
The apparent wind can be zero when the true wind is from（）.
A
ahead and equal to the ship's speed
B
astern and equal to the ship's speed
C
ahead and equal to twice the ship's speed
D
astern and equal to twice the ship's speed
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考题
"Can you ()with all the colors of the wind? Can you paint with all the colors of the wind?"A、seeB、paintC、writeD、draw
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SHIFT OF WIND DIRECTION IN AN ANTICLOCKWISE MANNER, FOR EXAMPLE FROM NORTH TO WEST ( OPPOSITE OF VEERING ) defines ______.A.Backing (of wind)B.Veering (of wind)C.Shifting of windD.altering of wind
考题
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考题
When recording the wind direction in the weather log，you would report the ______．A.direction the wind is blowing towardB.direction the wind is blowing fromC.duration of the maximum gust of windD.wind chill factor
考题
The velocity of the apparent wind can be more than the true wind，and come from the same direction，if certain conditions are present．One condition is that the ______．A.Ship's speed must be less than the true wind velocityB.True wind must be from dead asternC.True wind velocity must be faster than the ship's speedD.True wind must be from dead ahead
考题
A wind vane on a moving vessel shows ______.A.dead reckoning wind directionB.true wind directionC.apparent wind directionD.estimated wind direction
考题
An anemometer on a moving vessel measures ______.A.apparent wind speed onlyB.true wind speed and true wind directionC.true wind speed onlyD.apparent wind speed and true wind direction
考题
Apparent wind speed blowing across a vessel under tow can be measured by a(n)______．A.barometerB.wind vaneC.anemometerD.Thermometer
考题
In the Northern Hemisphere a wind is said to veer when the wind ______.A.changes direction clockwise, as from north to east, etcB.changes direction counterclockwise, as from south to east, etcC.changes direction violently and erraticallyD.remains constant in direction and speed
考题
In the Northern Hemisphere, when the wind at your location is northerly, the low pressure center causing the wind is located to your ______.A.NNWB.WSWC.ESED.SSW
考题
有时风大流急，船舶靠码头时必须掉头顶流。（）A、A ship has to turn to stem the tide because the wind is strong when she is getting alongside a wharf.B、Sometimes the wind is strong and the current is rough, so a ship has to turn to stem the tide when she is getting alongside a wharf.C、The wind is big, a ship must get alongside a wharf so she has to turn to stem the tide.D、A ship has to turn to stem the tide so she can get alongside a wharf.
考题
单选题When evacuating a seaman by helicopter lift，the vessel should be（）.A
stopped with the wind dead aheadB
stopped with the wind on the beamC
underway with the wind 30°on the bowD
underway on a course to provide no apparent wind
考题
单选题In most cases，the direction of the apparent wind lies between the bow and（）.A
the direction of the true windB
true northC
the beam on the windward sideD
the beam on the lee side
考题
单选题When recording the wind direction in the weather log，you would report the（）.A
direction the wind is blowing towardB
direction the wind is blowing fromC
duration of the maximum gust of windD
wind chill factor
考题
单选题In the Northern Hemisphere a wind is said to veer when the wind（）.A
Changes direction clockwise，as from north to east，etcB
Changes direction violently and erraticallyC
Remains constant in direction and speedD
Changes direction counterclockwise，as from south to east，etc
考题
单选题The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.A
cloud movementB
vessel headingC
wavesD
swells
考题
单选题When a wind is permanently changing the direction from which it blows, it is（）.A
variableB
changingC
backingD
veering
考题
单选题In rough weather，when a ship is able to maneuver，it is best to launch a lifeboat（）.A
on the lee sideB
on the windward sideC
with the wind dead aheadD
with the wind from astern
考题
单选题Most of your vessel’s superstructure is forward. How will the vessel lie when drifting with no way on?（）.A
With the wind from aheadB
With the wind off the port beamC
With the wind off the starboard beamD
With the wind from abaft the beam
考题
单选题When picking up your mooring at the buoy，the correct method is to（）.A
approach the buoy with the wind and current asternB
approach the buoy with the wind and current aheadC
approach the buoy with wind and sea abeamD
stop upwind and up current and drift down on the buoy
考题
单选题An anemometer on a moving vessel measures（）.A
apparent wind speed onlyB
true wind speed and true wind directionC
true wind speed onlyD
apparent wind speed and true wind direction
考题
单选题When you walk in a busy street, you should walk on the side _____.A
where the wind is comingB
where the wind is goingC
where the wind is weakerD
where the wind is stronger
考题
单选题When evacuating a seaman by helicopter lift，which course should the ship take?（）A
Downwind so that the apparent wind is close to nilB
A course that will keep a free flow of air，clear of smoke，over the hoist areaC
A course that will have the hoist area in the lee of the superstructureD
With the wind dead ahead because the helicopter is more maneuverable when going into the wind
考题
单选题In the Northern Hemisphere，when the wind at your location is northerly，the low pressure center causing the wind is located to your（）.A
NNWB
WSWC
ESED
SSW
考题
单选题Apparent wind speed blowing across a vessel under tow can be measured by a(n)（）.A
barometerB
wind vaneC
anemometerD
thermometer
考题
单选题The apparent wind’s speed can be zero only when two conditions are present. One condition is that the true wind（）.A
must be from dead aheadB
speed must be zeroC
must be from dead asternD
must be on the beam
考题
单选题When evacuating a seaman by helicopter lift，which statement is TRUE?（）A
The vessel should be stopped with the wind dead ahead during the hoisting operationB
Flags should be flown to provide a visual reference as to the direction of the apparent windC
The drop line should be grounded first then secured as close to the hoist point as possibleD
The hoist area should be located as far aft as possible so the pilot will have a visual reference while approaching
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