A.be on an even keel
B.be trimmed slightly by the head
C.have a drag of not more than 60 - 90 centimeters
D.be ballasted so the forefoot is near the surface
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A.either trimmed by the head or the stern
B.on an even keel
C.trimmed down by the head
D.trimmed down by the stern
A.anchor
B.to anchor
C.anchoring
D.to anchoring
A.shows a light with varying lengths of the lighted period
B.shows a light that changes color
C.marks an alternate lesser-used channel
D.is used as a replacement for another light
A.dockmaster
B.dock captain
C.lockmaster
D.lock foreman
A.speed begins to drop
B.stops
C.receives ice damage
D.becomes icebound
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Topside icing decreases vessel stability because it is usually off-center and（）.
A vessel shall be deemed to be overtaking when she can see at night（）.
A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.
When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.
A vessel showing a rigid replica of the International Code flag A is engaged in（）.
As the weather was worsening and wind force rising to 8，my vessel（）were yawing within forty degrees of the compass.
A vessel proceeding along the course of a narrow channel shall keep as near to the outer limitof the channel which lies on her starboard side as it is safe and practicable.Which one of the followings does the statement express?（）.
On a single-screw vessel the stern frame（）.
In most cases，when a large merchant vessel enters shallow water at high speed the（）.
Any vessel shall，if the circumstances of the case admit，avoid（）in a narrow channel.