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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For operations in pack ice，a vessel should（）.
A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.
An alternating light（）.
If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.
A vessel proceeding along a narrow channel shall（）.
All persons or vessels within the lock area，including the lock approach channels，come under the authority of the（）.
Ice blink is（）.
A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）
In most cases，when a large merchant vessel enters shallow water at high speed the（）.
When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）