单选题A bridle for an ocean tow consists of（）.Atwo chains of equal lengthBa single nylon pendant rove through a heavy ring free to move on the pendantCtwo long legs of wire rope shackled to a fishplateDa single length of heavy chain with both ends secured on deck to welded pad eyes
单选题
A bridle for an ocean tow consists of（）.
A
two chains of equal length
B
a single nylon pendant rove through a heavy ring free to move on the pendant
C
two long legs of wire rope shackled to a fishplate
D
a single length of heavy chain with both ends secured on deck to welded pad eyes
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An ocean towing bridle whose legs are of equal length，but too short，may ______.A.fail to provide spring in the hawserB.cause unequal distribution of the load to one legC.cause the bridle legs to jump clear of the chocks or fairleadsD.None of the above
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.
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The choice of length of tow bridle legs is governed by the ______．A.Expected towing forcesB.Capability of retrieving gearC.Freeboard of the unit being towedD.Need to reduce yaw
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A bridle for an ocean tow consists of ______.A.two chains of equal lengthB.a single nylon pendant rove through a heavy ring free to move on the pendantC.two long legs of wire rope shackled to a fishplateD.a single length of heavy chain with both ends secured on deck to welded pad eyes
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An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful Which action should now be taken?______.A.Abandon the towing vessel.B.Radio for emergency assistance.C.Slip the towline and allow it to run off the drum.D.Secure all watertight openings on the towing vessel.
单选题One advantage of chain over wire rope for a tow bridle is that chain（）.Ais better suited for inland towingBresists damage from chafingChandles more easilyDequalizes towing forces better
单选题An ocean towing bridle should（）.Ahave equal legs of sufficient lengthBhave a large angle between the legsCbe formed on a bight of cable through a ringDnever be made up of chain
单选题An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful. Which action should now be taken? （）AAbandon the towing vesselBRadio for emergency assistanceCSlip the towline and allow it to run off the drumDSecure all watertight openings on the towing vessel
单选题The choice of length of tow bridle legs is governed by the（）.Aexpected towing forcesBcapability of retrieving gearCfreeboard of the unit being towedDneed to reduce yaw
单选题On a long ocean tow，the bridle should be made up of two equal lengths of（）.AchainBwireCnylonDmanila
单选题In securing deck loads for an ocean tow，drill pipe should be（）.Agalvanized to protect against corrosionBheld in place with heavy materials such as spare pendant wireClimited to no more than five courses highDprovided with bulwarks at both ends of their bays
单选题An ocean towing bridle whose legs are of equal length，but too short，may（）.Afail to provide spring in the hawserBcause unequal distribution of the load to one legCcause the bridle legs to jump clear of the chocks or fairleadsDNone of the above
单选题A chain bridle is used when towing astern because it（）.Ais easy to connectBprovides an effective catenary and absorbs shock due to its weightCmakes rigging a swivel unnecessaryDprevents the tow from yawing by the drag of the chains in a seaway
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In towing，heaving lines are used for（）.Apassing a tow bridle to the tugBpassing a messenger lineCheaving in the tow bridleDservice lines with rocket line throwers
单选题A tow bridle is attached to the main tow hawser at the（）.Abight ringBtow hookCfishplateDswivel
单选题What is NOT suitable for use in making up the towing rig for a heavy，long ocean tow?（）AChainBRingCSolid thimbleDA fishplate
单选题A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain（）.Ais more flexible and has the ability to absorb shock because of its weightBis less subject to wear and damage from abrasionCrequires little maintenanceDAll of the above
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To reduce stress on the towing hawser when towing astern (ocean tow)，the hawser should be （）.Asecured to the aftermost fitting on the towing vesselBjust touching the waterCunderwaterDas short as possible