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An anemometer on a moving vessel measures ______.
A.apparent wind speed only
B.true wind speed and true wind direction
C.true wind speed only
D.apparent wind speed and true wind direction
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更多 “ 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 ” 相关考题
考题
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should ______.A.remain on course and hold speedB.remain on course but slack the speedC.change course to put the wind on either beam and increase speedD.change course and put the stern to the wind
考题
If the current and wind are in the same direction，the sea surface represents a wind speed ______.A.lower than actually existsB.higher than actually existsC.that actually existsD.that has no proportional relationship
考题
If the current and wind are in opposite directions，the sea surface represents ______.A.a greatly reduced wind speedB.a higher wind speed than what really existsC.a lower wind speed than what really existsD.more turbulent winds
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 fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should ______.A.remain on course and hold speedB.change course and put the stern to the windC.change course to put the wind on either beam and increase speedD.remain on course but slack the speed
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
Apparent wind speed blowing across a vessel under tow can be measured by a(n)______．A.barometerB.wind vaneC.anemometerD.Thermometer
考题
If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell weather the other vessel has the wind on the port or starboard side, she shall ______.A.hold course and speedB.sound the danger signalC.keep out of the way of the other vesselD.turn to port and come into the wind
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
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On a clear，warm day，you notice the approach of a tall cumulus cloud. The cloud top has hard well defined edges and rain is falling from the dark lower edge. Should this cloud pass directly overhead（）.A
it will be preceded by a sudden increase in wind speedB
it will be preceded by a sudden decrease in wind speedC
the wind speed will not change as it passesD
the wind will back rapidly to left in a counterclockwise direction as it passes
考题
单选题A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）.A
estimated positionB
dead reckoning positionC
fixD
None of the above
考题
单选题If the current and wind are in the same direction，the sea surface represents a wind speed （）.A
lower than actually existsB
higher than actually existsC
that actually existsD
that has no proportional relationship
考题
单选题The apparent wind can be zero when the true wind is from（）.A
ahead and equal to the ship's speedB
astern and equal to the ship's speedC
ahead and equal to twice the ship's speedD
astern and equal to twice the ship's speed
考题
单选题The vessel was drifted off from her（）due to strong wind.A
courseB
trackC
directionD
trend
考题
单选题There is a fire aft aboard your vessel. To help fight the fire，you should（）.A
put the wind off either beamB
head the bow into the wind and decrease speedC
put the stern into the wind and increase speedD
put the stern into the wind and decrease speed
考题
单选题A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should（）.A
remain on course and hold speedB
change course and put the stern to the windC
change course to put the wind on either beam and increase speedD
remain on course but slack the speed
考题
单选题A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.A
remain on course and hold speedB
remain on course but slack the speedC
change course to put the wind on either beam and increase speedD
change course and put the stern to the wind
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In the Northern Hemisphere，if your vessel is in a hurricane’s navigable semicircle it should be positioned with the wind on the（）.A
Starboard quarter，hold course and make as much speed as possibleB
Port bow，hold course and make as much speed as possible until the hurricane has passedC
Port quarter，maintain course and make as much speed as possibleD
Starboard bow and heave to until the hurricane has passed
考题
单选题You are landing a single-screw vessel，with a right-hand propeller，starboard side to the dock.When you have approached the berth and back the engine，you would expect the vessel to （）.A
Lose headway without swingingB
Turn her bow toward the dockC
Turn her bow away from the dockD
Head into the wind，regardless of the side the wind is on
考题
单选题In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.A
the wind speed is greater here since the wind is traveling in the same general direction as the storm's trackB
the direction of the wind and seas might carry a vessel into the path of the stormC
the seas are higher because of greater wind speedD
All of the above
考题
单选题If the current and wind are in opposite directions，the sea surface represents（）.A
a greatly reduced wind speedB
a higher wind speed than what really existsC
a lower wind speed than what really existsD
more turbulent winds
考题
单选题Your vessel is off a lee shore in heavy weather and laboring. Which action should you take?（）.A
Put the sea and wind about two points on either how and reduce speedB
Heave to in the trough of the seaC
Put the sea and wind on either quarter and proceed at increased speedD
Put the bow directly into the sea and proceed at full speed
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