更多"A bridle for an ocean tow consists "的相关试题:
[单项选择]On a long ocean tow,the bridle should be made up of two equal lengths of().
A. chain
B. wire
C. nylon
D. manila
[单项选择]In securing deck loads for an ocean tow,drill pipe should be().
A. galvanized to protect against corrosion
B. held in place with heavy materials such as spare pendant wire
C. limited to no more than five courses high
D. provided with bulwarks at both ends of their bays
[单项选择]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
[单项选择]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 emergency
B. the correct navigation lights are rigged and operable on the tug and tow
C. an insurance underwriter has prepared a pre-sailing survey
D. a pick-up wire has been rigged on the tow in case of a breakaway
[单项选择]A tow bridle is attached to the main tow hawser at the().
A. bight ring
B. tow hook
C. fishplate
D. swivel
[单项选择]The choice of length of tow bridle legs is governed by the().
A. expected towing forces
B. capability of retrieving gear
C. freeboard of the unit being towed
D. need to reduce yaw
[单项选择]An ocean towing bridle should().
A. have equal legs of sufficient length
B. have a large angle between the legs
C. be formed on a bight of cable through a ring
D. never be made up of chain
[单项选择]When connecting the tow bridle to a tug, the end of the bridle is passed with a().
A. heaving line
B. shot line
C. high line
D. messenger line
[单项选择]An ocean towing bridle whose legs are of equal length,but too short,may().
A. fail to provide spring in the hawser
B. cause unequal distribution of the load to one leg
C. cause the bridle legs to jump clear of the chocks or fairleads
D. None of the above
[单项选择]If a vessel under tow starts jumping on its tow line,the most appropriate action to alleviate the condition is to().
A. change course
B. slow down
C. heave to
D. adjust tow line length
[单项选择]The biggest problem encountered when towing bridle legs are too short is().
A. retrieval
B. adjusting tension
C. excessive strain
D. hookup to main towline
[单项选择]In astern towing,a tow span,also called the tow bar or towing arch,is used to().
A. insure that the hawser leads directly aft as it passes over the stern of the towing vessel
B. increase the stability of the towing vessel by raising the hawser off the deck
C. reduce chafing of the towing hawser
D. prevent fouling of the hawser on deck gear located on the stern of the towing vessel
[单项选择]A tow that veers to the side on the end of the towline is said to().
A. yaw
B. surge
C. sway
D. swing
[单项选择]The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to().
A. one-half the SWL of the main towing hawser
B. three-fourths the SWL of the main towing hawser
C. that of the main towing hawser
D. twice that of the main towing hawser
[单项选择]A chain bridle is used when towing astern because it().
A. Is easy to connect
B. Provides an effective catenary and absorbs shock due to its weight
C. Makes rigging a swivel unnecessary
D. Prevents the tow from yawing by the drag of the chains in a seaway
[单项选择]A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain().
A. is more flexible and has the ability to absorb shock because of its weight
B. is less subject to wear and damage from abrasion
C. requires little maintenance
D. All of the above