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单选题
In a racetrack turn，to recover a man overboard，the vessel is steadied for the SECOND time after a turn of how many degrees from the original heading?（）
A
60°
B
135°
C
180°
D
360°
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单选题If a man falls overboard from a rig under tow，you should FIRST（）.A
notify the tugB
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单选题（）means check the swing of the vessel’s head in a turn.A
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单选题A man was sighted as he fell overboard. After completing a Williamson turn，the man is not sighted. What type of search should be conducted?（）A
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requires the least shiphandling skills to performD
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