单项选择题

Which change in the condition of the seas could indicate the formation of a tropical storm or hurricane several hundred miles from your location? （）

A.A long swell from an unusual direction
B.A lengthy lull in the wind and seas
C.Large seas coming from different directions
D.A brisk chop from the southeast

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单项选择题

When the period of beam seas equals the natural rolling period of a vessel，what will most likely occur?（）

A.Excessive pitching
B.Excessive yawing
C.Excessive rolling
D.No change should be evident

单项选择题

When taking soundings on a floating ship，the tape should be lowered and brought back quickly to（）.

A.reduce the time the sounding tube is open
B.avoid creating a spark
C.lessen the effect of roll or pitch on the reading
D.lessen the effect of heave on the reading

单项选择题

When running before a heavy sea，moving weights aft will affect the handling of a vessel by （）.

A.reducing rolling
B.increasing rolling
C.reducing yawing
D.increasing yawing