A wind vane on a moving vessel shows ______.A.dead reckoning wind directionB.true wind directionC.apparent wind directionD.estimated wind direction
A wind vane on a moving vessel shows ______.
A.dead reckoning wind direction
B.true wind direction
C.apparent wind direction
D.estimated wind direction
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
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
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
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
Apparent wind speed blowing across a vessel under tow can be measured by a(n)______．A.barometerB.wind vaneC.anemometerD.Thermometer
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
单选题When evacuating a seaman by helicopter lift，the vessel should be（）.Astopped with the wind dead aheadBstopped with the wind on the beamCunderway with the wind 30°on the bowDunderway on a course to provide no apparent wind
单选题Changing direction by bringing the stern of the vessel through the eye of the wind is known as（）.AjibingBrunning before the windCtackingDreefing
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Which position includes the effects of wind and current（）.ADead reckoning positionBLeeway positionCEstimated positionDSet position
单选题There is a fire aft aboard your vessel. To help fight the fire，you should（）.Aput the wind off either beamBhead the bow into the wind and decrease speedCput the stern into the wind and increase speedDput the stern into the wind and decrease speed
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A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.Aremain on course and hold speedBremain on course but slack the speedCchange course to put the wind on either beam and increase speedDchange course and put the stern to the wind
单选题Most of your vessel’s superstructure is forward. How will the vessel lie when drifting with no way on?（）.AWith the wind from aheadBWith the wind off the port beamCWith the wind off the starboard beamDWith the wind from abaft the beam
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When you walk in a busy street, you should walk on the side _____.Awhere the wind is comingBwhere the wind is goingCwhere the wind is weakerDwhere the wind is stronger
单选题The numeral in the center of a wind rose circle on a pilot chart indicates the （）.Atotal number of observationsBaverage wind force on the Beaufort scaleCaverage wind force in knotsDpercentage of calms
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 （）.ALose headway without swingingBTurn her bow toward the dockCTurn her bow away from the dockDHead into the wind，regardless of the side the wind is on
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