protect the towline from chafing
secure the end of the towline on the tug
stop off the towline while retrieving it
absorb shock loading on the towline
第1题:
In towing,chocks are used to ______.
A.protect the towline from chafing
B.secure the end of the towline on the tug
C.stop off the towline while retrieving it
D.absorb shock loading on the towline
第2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3题:
A lashing used to secure two barges side by side,lashed in an "X" fashion,is called a ______.
A.scissor wire
B.towing wire
C.breast wire
D.cross wire
第4题:
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 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7题:
A chain bridle is used when towing astern because it ______.
A.is easy to connect
B.provides an effective catenary and absorbs shock due to its weight
C.makes rigging a swivel unnecessary
D.prevents the tow from yawing by the drag of the chains in a seaway
第8题:
An ocean towing bridle whose legs are of equal length,but too short,may ______.
A.fail to provide spring in the hawser
B.cause unequal distribution of the load to one leg
C.cause the bridle legs to jump clear of the chocks or fairleads
D.None of the above
第9题:
monkey's fist
ball or baseball knot
heaving knot
three strand Turk's head
第10题:
only a stern light
a towing light above the stern light
two towing lights in a vertical line
two white lights in a vertical line