A.stem the current and make very slow headway when the anchor is dropped
B.stem the current and be falling aft very slowly when the anchor is dropped
C.stem the current and endeavor to make neither headway nor sternway when the anchor is dropped
D.stop all headway through the water and keep the current astern when the anchor is dropped
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A.period
B.range
C.distance
D.depth
A.by
B.with
C.on
D.in
A.Northwesterly
B.Southwesterly
C.Southerly
D.Northerly
A.when the wind is against you
B.with the current setting against you
C.at slack water
D.with a cross current
A.SW'ly direction along the NW coast of Africa
B.S'ly direction off the East Coast of Australia
C.NW'ly direction along the SW coast of Africa
D.SW'ly direction along the SE coast of Greenland
最新試題
Which statement is TRUE concerning equatorial tides（）.
The velocity of the current in large coastal harbors is（）.
Priming of the tides occurs（）.
The steady current circling the globe at about 60°S is the（）.
Tides are superimposed on nontidal rising and falling water levels，caused by（）．
You are docking a vessel．Wind and current are most favorable when they are（）.
Tropic tides are caused by the（）.
Neap tides occur（）.
To make sure of getting the full advantage of a favorable current，you should reach an entrance or strait at what time in relation to the predicted time of the favorable current?（）
The tide（）.It’s 2 hours before low water，and（）your present position you will be aground at low water.