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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

When preparing a ship for heavy weather，fuel oil day tanks should be（）.

A.pumped overboard to calm the seas
B.drained to the lower hull to reduce free surfaces
C.filled to ensure that sufficient fuel oil is available during a lengthy emergency
D.partially drained to increase free surfaces in order to reduce motions

單項(xiàng)選擇題

When a vessel is swinging from side to side off course due to quartering seas，the vessel is （）.

A.broaching
B.pitchpoling
C.rolling
D.yawing