the masthead lights for a towing vessel
the lights for a vessel restricted in its ability to maneuver
sidelights，stern light and towing light
All of the above
第1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2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3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：
There is a ______ when one or more vessels are towing or pushing another vessel or vessels，provided that they are all involved in commercial activities and not in a salvage operation．
A.private safety
B.private maritime adventure
C.common safety
D.common maritime adventure
第7题：
directly astern and pushing the tow
towing on a hawser
towing alongside and parallel to the vessel it is towing
towing on the hip
第8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9题：
apply the relevant Steering and Sailing Rules as a power-driven vessel
apply the relevant Steering and Sailing Rules as a Sailing vessel
apply the relevant Steering and Sailing Rules as a vessel not under command
apply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation
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