單項選擇題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.synchronism
B.harmony
C.check
D.step


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1.單項選擇題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 tow
B.gives an approximation of the amount of strain on the towing hawser
C.is the dip in the towing hawser between the tug and the tow
D.All of the above

2.單項選擇題The biggest problem you generally encounter while towing a single tow astern is（）.

A.the catenary dragging on the bottom
B.swamping of the tow
C.the tow tending to dive
D.yaw

3.單項選擇題The best method to secure a tow line to a cleat is to（）.

A.take a turn around the cleat，then figure-eights，and a half-hitch
B.make figure-eights，followed by a half-hitch，then a figure-eight knot
C.take a turn，a half turn，and a figure-eight
D.take several turns around the cleat only

4.單項選擇題One major advantage of the round turn maneuver in a man overboard situation is that it（）.

A.is the fastest method
B.is easy for a single-screw vessel to perform
C.requires the least shiphandling skills to perform
D.can be used in reduced visibility

5.單項選擇題One advantage of chain over wire rope for a tow bridle is that chain（）.

A.is better suited for inland towing
B.resists damage from chafing
C.handles more easily
D.equalizes towing forces better