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单选题
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
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考题
A chain bridle is used when towing astern because it ______.A.is easy to connectB.provides an effective catenary and absorbs shock due to its weightC.makes rigging a swivel unnecessaryD.prevents the tow from yawing by the drag of the chains in a seaway
考题
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
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单选题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
考题
单选题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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单选题On a long ocean tow，the bridle should be made up of two equal lengths of（）.A
chainB
wireC
nylonD
manila
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单选题A chain bridle is used when towing astern because it（）.A
is easy to connectB
provides an effective catenary and absorbs shock due to its weightC
makes rigging a swivel unnecessaryD
prevents the tow from yawing by the drag of the chains in a seaway
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单选题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
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单选题Which statement is TRUE concerning hawser towing? （）A
The catenary in a hawser should be sufficient so that the hawser just touches the bottomB
The hawser is of sufficient length for towing when taut between tug and towC
Increasing speed usually increases the catenary in the hawserD
Shortening the tow hawser generally decreases the maneuverability of the tug
考题
单选题When towing astern，one way to reduce yawing of the tow is to（）.A
trim the tow by the sternB
trim the tow by the headC
have the tow on an even keelD
list the tow on the side it is yawing
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单选题In towing，heaving lines are used for（）.A
passing a tow bridle to the tugB
passing a messenger lineC
heaving in the tow bridleD
service lines with rocket line throwers
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单选题A tow bridle is attached to the main tow hawser at the（）.A
bight ringB
tow hookC
fishplateD
swivel
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单选题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
考题
单选题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 weightB
is less subject to wear and damage from abrasionC
requires little maintenanceD
All of the above
考题
单选题In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.A
shock loading on the tow line is reduceB
towing speed is improvedC
the vessel is more visible from the tugD
the catenary of the tow line is reduced
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单选题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
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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（）.A
synchronismB
harmonyC
checkD
step
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单选题A tow can override its tug as a result of（）.A
a mechanical breakdown on the tugB
adverse tidal current conditionsC
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All of the above
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单选题You are under sail and overtaking a tug and tow.Which action is correct（）.A
The power-driven tug must maneuver to avoid collisionB
You must maneuver to avoid the tug and towC
You must maneuver to avoid collision only if the tug is to leeward and the wind is on your port sideD
Both vessels are required to maneuver to avoid collision
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