更多"A tow bridle is attached to the mai"的相关试题:
[单项选择]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
[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]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]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]Which statement is TRUE concerning hawser towing? （）
A. The catenary in a hawser should be sufficient so that the hawser just touches the bottom
B. The hawser is of sufficient length for towing when taut between tug and tow
C. Increasing speed usually increases the catenary in the hawser
D. Shortening the tow hawser generally decreases the maneuverability of the tug
[单项选择]To reduce stress on the towing hawser when towing astern (ocean tow)，the hawser should be （）.
A. secured to the aftermost fitting on the towing vessel
B. just touching the water
C. underwater
D. as short as possible
[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]When passing a hawser to the dock you would first use what line（）.
A. Gantline
B. Heaving line
C. Preventer
D. Warp
[单项选择]To clean a dirty fiber towing hawser used in ocean towing，you should（）.
A. use lye or other mild detergent
B. wash it with fresh water，dry and store it
C. wash it with salt water
D. use cleaning fluid on nylon，dacron and other synthetic lines
[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]When a tug is pulling on a hawser at right angles to the ship，and the pilot wants to come ahead or astern on the ship’s engine，care must be taken that the pilot（）.
A. does not break the towline
B. does not get too much way on the vessel
C. keeps a steady course so the towline will remain tight
D. turns the ship toward the direction of pull
[单项选择]A fiber towing hawser is readied for service by（）.
A. spooling it on a winch cathead
B. coiling it in a counterclockwise direction on the fantail
C. faking it on deck in a fore and aft direction
D. spooling it on a reel lying on its side to prevent rolling
[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]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]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
