A.tow strain
B.catenary length
C.being in step
D.Williamson's Tow
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A.At the head of the tow
B.75m from the head of the tow
C.120m from the head of the tow
D.180m from the head of the tow
A.yaw
B.surge
C.sway
D.swing
A.only one high and one low water occur during a lunar day
B.the high tide is higher and the low tide is lower than usual
C.the high tide and low tide are exactly six hours apart
D.two high tides occur during a lunar day
A.bar securing a cargo port
B.centerline vertical bulkhead
C.deep beam
D.spanner stay
A.crossing
B.transit
C.transfer
D.passing
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Before entering an ice area，the ship should be（）.
Topside icing decreases vessel stability becauseit increases（）.
Ice blink is（）.
In most cases，when a large merchant vessel enters shallow water at high speed the（）.
As the weather was worsening and wind force rising to 8，my vessel（）were yawing within forty degrees of the compass.
The proximity of pack ice may be indicated by（）.
A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is（）.
Topside icing decreases vessel stability because it is usually off-center and（）.
A vessel showing a rigid replica of the International Code flag A is engaged in（）.
A tug’s horsepower available at the shaft is（）.