secured to the aftermost fitting on the towing vessel
just touching the water
underwater
as short as possible
第1题：
A vessel towing a barge astern would show，at the stern ______.
A.only a stern light
B.a towing light above the stern light
C.two towing lights in a vertical line
D.two white lights in a vertical line
第2题：
An intermediate spring is ______.
A.fitted in each leg of the towing bridle
B.generally located between the “fishplate” and the main towing hawser
C.secured at the “H” bitts
D.usually made of manila hawser
第3题：
A tug is "in irons" when held in a fixed position by ______.
A.the weight of its tow，its being anchored，or grounded
B.the weight of its towing hawser on the bottom
C.an adverse current
D.lack of power or an engine breakdown
第4题：
Abandon the towing vessel
Radio for emergency assistance
Slip the towline and allow it to run off the drum
Secure all watertight openings on the towing vessel
第5题：
increase control of the tow
prevent the towing vessel from going in irons
make the towing vessel less maneuverable
reduce shock stress on the towing hawser
第6题：
A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit ______.
A.the masthead lights for a towing vessel
B.the lights for a vessel restricted in its ability to maneuver
C.sidelights，stern light and towing light
D.All of the above
第7题：
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.
第8题：
A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when ______.
A.directly astern and pushing the tow
B.towing on a hawser
C.towing alongside and parallel to the vessel it is towing
D.towing on the hip
第9题：
It makes for an easy connection
It gives a spring effect to cushion the shock
It eliminates the necessity of a swivel
It does not chafe
第10题：
vessel towing astern
barge pushed ahead
vessel towing astern only when the length of her tow exceeds 200 meters
this signal does not exist in international waters