[单项选择]The catenary（）.
A. acts as a reserve length of towing hawser when the tug applies more power，and it dampens the surge effect of the tow
B. gives an approximation of the amount of strain on the towing hawser
C. is the dip in the towing hawser between the tug and the tow
D. All of the above

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[单项选择]Cable tension for catenary calculations is taken at the（）.
A. chain locker
B. fairlead
C. anchor
D. contact point of chain with seabed

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[单项选择]The catenary in a towline is（）.
A. a short bridle
B. the downward curvature of the hawser
C. another name for a pelican hook
D. used to hold it amidships

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[单项选择]When towing astern，increased catenary will（）.
A. increase control of the tow
B. prevent the towing vessel from going in irons
C. make the towing vessel less maneuverable
D. reduce shock stress on the towing hawser

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[单项选择]To reduce the amount of catenary you may（）.
A. shorten the hawser or increase the tug's speed
B. lengthen the hawser or reduce the tug's speed
C. place your tug in irons
D. make a sharp turn

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[单项选择]Catenary as applied to tow lines denotes the（）.
A. dip of the line
B. stretch of the line
C. strain on the line
D. length of the line

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