A tow can override its tug as a result of ______.A.a mechanical breakdown on the tugB.adverse tidal current conditionsC.the tug reducing its speedD.All of the above
A tow can override its tug as a result of ______.
A.a mechanical breakdown on the tug
B.adverse tidal current conditions
C.the tug reducing its speed
D.All of the above
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Before leaving port on an ocean tow，a tug captain should assure himself of all the following EXCEPT ______.A.the towing hawser can be released quickly in an emergencyB.the correct navigation lights are rigged and operable on the tug and towC.an insurance underwriter has prepared a pre-sailing surveyD.a pick-up wire has been rigged on the tow in case of a breakaway.
A tug is "in irons" when held in a fixed position by ______.A.the weight of its tow，its being anchored，or groundedB.the weight of its towing hawser on the bottomC.an adverse currentD.lack of power or an engine breakdown
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
With a large tow astern，there is immediate danger to the tug in the event of the ______．A.Tug losing powerB.Tow line partingC.Bridle twistingD.Tow broaching
You intend to tow a barge with one tug and expect continuous high winds from the north．To reduce the yaw of your tow，you should ______．A.reduce the draft of the bargeB.shorten one leg of the bridleC.place bulky deck loads as far aft as possibleD.trim the barge down by the bow
A tow astern is veering from side to side on its towline．The best way of controlling the action is to ______．A.Trim the tow by the bowB.Trim the tow by the sternC.List the tow to windwardD.Adjust the length of the towing bridle
A tug would NOT assist a ship to steer if the tug is made up to the large vessel ______.A.by a tow line ahead of the vesselB.forward on either bow of the vesselC.approximately amidships of the vesselD.on the vessel’s quarter
单选题A tug is “in irons” when held in a fixed position by（）Athe weight of its tow，its being anchored，or groundedBthe weight of its towing hawser on the bottomCan adverse currentDlack of power or an engine breakdown
单选题A tug would NOT assist a ship to steer if the tug is made up to the large vessel（）.Aby a tow line ahead of the vesselBforward on either bow of the vesselCapproximately amidships of the vesselDon the vessel's quarter
单选题A tug is approaching a broken down steamer in moderately heavy weather preparing to take it in tow. In most cases the（）.Asteamer will drift stern downwindBtug will drift faster than the steamerCtug should approach stern toDtug should approach from downwind
单选题Which statement is TRUE concerning hawser towing? （）AThe catenary in a hawser should be sufficient so that the hawser just touches the bottomBThe hawser is of sufficient length for towing when taut between tug and towCIncreasing speed usually increases the catenary in the hawserDShortening the tow hawser generally decreases the maneuverability of the tug
单选题A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.Ano fog signalBone short blastCone prolonged and three short blastsDone prolonged，one short，and one prolonged blast
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If a vessel under tow starts jumping on its tow line，the most appropriate action to alleviate the condition is to（）.Achange courseBslow downCheave toDadjust tow line length
多选题Which two of statements are true？（）AIt is possible to synchronize static methods.BWhen a thread has yielded as a result of yield（）， it releases its locks.CWhen a thread is sleeping as a result of sleep（）， it releases its locks.DThe Object.wait（） method can be invoked only from a synchronized context.EThe Thread.sleep（） method can be invoked only from a synchronized context.FWhen the thread scheduler receives a notify（） request， and notifies a thread， that thread immediately releases its lock.
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In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.Ashock loading on the tow line is reduceBtowing speed is improvedCthe vessel is more visible from the tugDthe catenary of the tow line is reduced
单选题A tow astern is veering from side to side on its towline. The best way of controlling the action is to（）.Atrim the tow by the bowBtrim the tow by the sternClist the tow to windwardDadjust the length of the towing bridle
单选题The condition where a ship on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in（）.AsynchronismBharmonyCcheckDstep
单选题You intend to tow a barge with one tug and expect continuous high winds from the north. To reduce the yaw of your tow，you should（）.Areduce the draft of the bargeBshorten one leg of the bridleCplace bulky deck loads as far aft as possibleDtrim the barge down by the bow
单选题A tow can override its tug as a result of（）.Aa mechanical breakdown on the tugBadverse tidal current conditionsCthe tug reducing its speedDAll of the above
单选题A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is（）.Atow strainBcatenary lengthCbeing in stepDWilliamson's Tow
单选题You are under sail and overtaking a tug and tow.Which action is correct（）.AThe power-driven tug must maneuver to avoid collisionBYou must maneuver to avoid the tug and towCYou must maneuver to avoid collision only if the tug is to leeward and the wind is on your port sideDBoth vessels are required to maneuver to avoid collision