单选题When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.Aeddies under the barBswift current under the bar causing loss of controlCcross-currents pushing the tow away from the barDcross-currents pushing the tow into the bar
单选题
When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.
A
eddies under the bar
B
swift current under the bar causing loss of control
C
cross-currents pushing the tow away from the bar
D
cross-currents pushing the tow into the bar
参考解析
解析：
暂无解析
相关考题：
We use ________ when proceeding in dense fogA.auto-steeringB.gyro-pilotC.rudder gearD.hand-steering
Passage ThreeDid you know that a turtle can lay twelve eggs in one minute? A large sea turtle lays around 150 eggs at a time. She lays all these eggs in just a few minutes.Large sea turtles live in the warm seas of the world. Except for when they lay their eggs, they spend their whole lives in water. When it is time to lay their eggs, the females swim to land. They usually return to the place where they themselves were born. How they find their way back there is a mystery.When they reach shore, the big, heavy turtles crawl slowly up to the high water mark. Using their flippers, they pull themselves along the sand. They struggle like mountain climbers to attain their goal. When they finally reach dry sand, they rest before beginning the difficult task of laying eggs.The turtles lay the eggs in deep holes and cover them with warm sand. The sand protects the eggs from harm. Then the females leave them. After a few weeks, if you happened to be walking along the beach, you might see the sand begin to shake in one spot. Then you would see tidy black balls coming out of the sand. The tidy heads of baby turtles!Baby turtles have a build-in sense of direction. As soon as they are hatched, they head for the water. Once the babies swim out to sea, they don't touch shore again until it is time for them to lay their own eggs.41. The first sentence lets us know that this passage is about ______.A. turtlesB. oceansC. timeD. eggs
When steering by autopilot, how often should_______steering be checked?A.every dayB.when time allowsC.At least once a watchD.No checking is necessary
He played on the ________ for two hours and when he returned he found half his goods ________ stolen. A.sands...wasB.sand...wereC.sand...wasD.sands...were
A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?A.When the towing vessel enters the fogB.When the drilling rig enters the fogC.When the towing vessel can no longer be seen from the rigD.Immediately
A tow that is properly aligned to pass through a narrow opening between two bridge piers is " ______".A.on courseB.headed fairC.holding onD.in shape
A tug may be in danger of tripping when ______.A.towed sideways by an overwhelming force on the towlineB.her tow moves parallel to and forward on either side of the tugC.the tow is no longer directly astern but moves up on her quarterD.All of the above
When steering by hand，which of the following may be a functional input to the steering gear as a result of turning the wheel ________．A.Non-follow-upB.Rudder adjustmentC.Weather adjustmentD.All the above may be activated
You are in the process of adding a barge to your tow．A line run from your power capstan and around timber heads on your tow is made fast on the new barge so that it can be pulled into position．This line is called a ______．A.Scissors wireB.Capstan lineC.Spring lineD.Fore and aft line
单选题A vessel constrained by her draught shall，when risk of collision with another vessel in a crossing or head-on situation exists，（）.Aapply the relevant Steering and Sailing Rules as a power-driven vesselBapply the relevant Steering and Sailing Rules as a Sailing vesselCapply the relevant Steering and Sailing Rules as a vessel not under commandDapply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation
单选题When steering by autopilot,how often should the steering be checked?（）A12 times on each watchBWhen time allowsCAt least once a watchDNo checking is necessary
单选题When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?（）AThe six-way valve opensBThe steering service pump motor is stoppedCThe follow-up gear takes the pump off strokeDThe cylinder relief valves bypass oil to the suction side the pump
单选题The prohibition against displaying lights which may be confused with required navigation lights applies（）.Afrom sunset to sunrise and during restricted visibilityBonly when other vessels are in the areaConly when operating in a traffic separation schemeDonly when under tow
单选题When the steering wheel is turned, oil is directed to the steering gear rams by（）Amodulating the oil flow with the six-way valveBmoving the automatic pressure differential valveCmoving the receiving telemotor which regulates the tow-way valveDvarying the eccentricity of a floating ting or angle of a tilting box
单选题The best method to secure a tow line to a cleat is to（）.Atake a turn around the cleat，then figure-eights，and a half-hitchBmake figure-eights，followed by a half-hitch，then a figure-eight knotCtake a turn，a half turn，and a figure-eightDtake several turns around the cleat only
多选题When using Cisco Network Assistant to configure smartports， Which tow of the following roles can belong to a VLAN of the type "access" ？（）APhone+DesktopBDesktopCSwitchDRouterETrunk
单选题When connecting the tow bridle to a tug, the end of the bridle is passed with a（）.Aheaving lineBshot lineChigh lineDmessenger line
单选题When towing astern，one way to reduce yawing of the tow is to（）.Atrim the tow by the sternBtrim the tow by the headChave the tow on an even keelDlist the tow on the side it is yawing
单选题During large storms, when waves crash against the beach, large amounts of sand is suspended in the water and may drift with the current.Awaves crash against the beach, large amounts of sand is suspendedBthe beach is crashed against by waves, large amounts of sand are suspendedCthe beach is crashed against by waves suspending large amounts of sandDwaves crash against the beach, large amounts of sand are suspendedEwaves crash against the beach, the suspending of large amounts of sand is
单选题A tug may be in danger of tripping when（）.Atowed sideways by an overwhelming force on the towlineBher tow moves parallel to and forward on either side of the tugCthe tow is no longer directly astern but moves up on her quarterDAll of the above
单选题A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）AThe vessel moving upstream against the currentBThe vessel moving downstream with a following currentCThe vessel located more towards the channel centerlineDThe vessel with the least amount of maneuverability
单选题A tow that is properly aligned to pass through a narrow opening between two bridge piers is （）.Aon courseBheaded fairCholding onDin shape
单选题Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?（）AThe follow-up gearBThe rudder angle indicatorCThe synchronous electric transmitterDA rudder angle limit switch
单选题An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.Ayellow lights at each endBtwo red lights in a vertical lineCa black ballDa diamond shape
单选题How should the letter O be pronounced when spoken on the radiotelephone?（）AOCK TOW BERBO RI ANCOSS CAHDOA KAM
单选题When towing in an open seaway，it is important to use a towing line（）.Amade only of wire rope，due to possible weather conditionsBthat will have the tow on a crest while your vessel is in a troughCthat will have the tow on a crest while your vessel is on a crestDwith little dip to gain maximum control of the tow
单选题When steering on autopilot which of the following input conditions may NOT have an effect on the control of the steering gear（）.ANon-follow-upBRudder adjustmentCWeather adjustmentDAll the above may be activated