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单选题
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
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单选题When towing,what is the main reason for using a chain bridle on a wire hawser().A
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Radio for emergency assistanceC
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考题
单选题You see a vessel carrying a black diamond which indicates a().A
vessel towing asternB
barge pushed aheadC
vessel towing astern only when the length of her tow exceeds 200 metersD
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考题
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the masthead lights for a towing vesselB
the lights for a vessel restricted in its ability to maneuverC
sidelights,stern light and towing lightD
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考题
单选题A vessel towing a barge astern would show,at the stern().A
only a stern lightB
a towing light above the stern lightC
two towing lights in a vertical lineD
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考题
单选题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 vesselB
increase the stability of the towing vessel by raising the hawser off the deckC
reduce chafing of the towing hawserD
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考题
单选题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 towB
gives an approximation of the amount of strain on the towing hawserC
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考题
单选题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
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考题
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The hawser is of sufficient length for towing when taut between tug and towC
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考题
单选题A towing vessel is tripped when().A
it is overtaken by the towB
it is pulled sideways by the towC
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考题
单选题A towing vessel becomes tripped while towing on a hawser astern. What factor is MOST important when assessing the risk of capsizing? ()A
Length of the towlineB
Height of the towline connectionC
Longitudinal position of the towline connectionD
Direction of opposing force
考题
单选题Good seamanship while towing in heavy weather requires all of the following EXCEPT().A
reducing speed to reduce surging on the towlineB
lashing down or stowing all loose gearC
dogging all hatches and watertight doorsD
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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
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list the tow on the side it is yawing
考题
单选题What does the term end-for-end refer to in regard to a wire towing hawser().A
Cutting off the bitter and towing ends of the wire ropeB
Splicing two wire ropes togetherC
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考题
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the masthead lights for a towing vesselB
the lights for a vessel restricted in its ability to maneuverC
sidelights,sternlight and towing lightD
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考题
单选题When towing astern what equipment should be stowed ready for use near the towline?()A
First aid kitB
Axe or cutting torchC
Fire extinguisherD
Chafing gear
考题
单选题A power-driven vessel,when towing astern,shall show().A
two towing lights in a vertical lineB
a towing light in a vertical line above the sternlightC
two towing lights in addition to the sternlightD
a small white light in lieu of the sternlight
考题
单选题An intermediate spring is().A
fitted in each leg of the towing bridleB
generally located between the fishplate and the main towing hawserC
secured at the H bittsD
usually made of manila hawser
考题
单选题As seen from the tow,what should connect the leading ends of both towing bridle legs to the main towing hawser?()A
A cable clampB
A fishplate,flounder,or towing plateC
A pad eyeD
The towing bitts
考题
单选题Which statement concerning an automatic towing engine is FALSE? ()A
It automatically maintains tow line tensionB
It prolongs the life of the hawser by distributing chafing as the hawser is paid out and taken inC
As tension on the hawser increases,more line is taken in by the automatic towing engineD
As tension on the hawser decreases,more line is taken in by the automatic towing engine
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