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
If the current and wind are in the same direction，the sea surface represents a wind speed ______.
A.lower than actually exists
B.higher than actually exists
C.that actually exists
D.that has no proportional relationship
相关考题：
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
Solid green arrows on the main body of a pilot chart indicate ______.A.prevailing wind directionsB.prevailing ocean current directionsC.probable surface current flowD.shortest great circle routes
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
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
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
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
A wind vane on a moving vessel shows ______.A.dead reckoning wind directionB.true wind directionC.apparent wind directionD.estimated wind direction
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
For determining the amount of chains used in anchoring operation, which one of the following factors would’t be considered?______.A.selection of landmarksB.character of sea bottomC.strength of current and wind forceD.radius of ship swing to wind or tide
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
单选题For determining the amount of chains used in anchoring operation,which one of the following factors wouldn’t be considered?（）.Aselection of landmarksBcharacter of sea bottomCstrength of current and wind forceDradius of ship swing to wind or tide
单选题Solid green arrows on the main body of a pilot chart indicate （）.Aprevailing wind directionsBprevailing ocean current directionsCprobable surface current flowDshortest great circle routes
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（）.Ait will be preceded by a sudden increase in wind speedBit will be preceded by a sudden decrease in wind speedCthe wind speed will not change as it passesDthe wind will back rapidly to left in a counterclockwise direction as it passes
单选题A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）.Aestimated positionBdead reckoning positionCfixDNone of the above
单选题If the current and wind are in the same direction，the sea surface represents a wind speed （）.Alower than actually existsBhigher than actually existsCthat actually existsDthat has no proportional relationship
单选题In the Northern Hemisphere a wind is said to veer when the wind（）.AChanges direction clockwise，as from north to east，etcBChanges direction violently and erraticallyCRemains constant in direction and speedDChanges direction counterclockwise，as from south to east，etc
单选题The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.Acloud movementBvessel headingCwavesDswells
单选题An instrument that indicates wind direction is known as a(n)（）.Aweather vane，wind vane or wind sockBhydrometerChygrometerDsling psychrometer
单选题The velocity of the wind，its steady direction，and the amount of time it has blown determines a wind driven current’s（）.AtemperatureBdensityCdeflectionDspeed
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（）.Aremain on course and hold speedBchange course and put the stern to the windCchange course to put the wind on either beam and increase speedDremain on course but slack the speed
单选题When picking up your mooring at the buoy，the correct method is to（）.Aapproach the buoy with the wind and current asternBapproach the buoy with the wind and current aheadCapproach the buoy with wind and sea abeamDstop upwind and up current and drift down on the buoy
单选题An anemometer on a moving vessel measures（）.Aapparent wind speed onlyBtrue wind speed and true wind directionCtrue wind speed onlyDapparent wind speed and true wind direction
单选题The Rules state that certain factors are to be taken into account when determining safe speed. Those factors include（）.Astate of wind，sea，and current，and the proximity of navigational hazardsBmaximum attainable speed of your vesselCtemperatureDaids to navigation that are available
单选题A wind blows round anticlockwise defines（）.Abacking ( of wind )Bbeach ( to )Cveering ( of wind )Dmaintaining direction of the wind
单选题In the Northern Hemisphere，the right half of the storm is known as the dangerous semicircle because（）.Athe wind speed is greater here since the wind is traveling in the same general direction as the storm's trackBthe direction of the wind and seas might carry a vessel into the path of the stormCthe seas are higher because of greater wind speedDAll of the above
单选题If the current and wind are in opposite directions，the sea surface represents（）.Aa greatly reduced wind speedBa higher wind speed than what really existsCa lower wind speed than what really existsDmore turbulent winds
单选题Your vessel is off a lee shore in heavy weather and laboring. Which action should you take?（）.APut the sea and wind about two points on either how and reduce speedBHeave to in the trough of the seaCPut the sea and wind on either quarter and proceed at increased speedDPut the bow directly into the sea and proceed at full speed