In restricted visibility a towed vessel must sound a fog signal when it is（）.<br>A:the last vessel in the tow<br>B:the last vessel in the tow and it is carrying a crew<br>C:manned，regardless of its position in the tow<br>D:None of the above are correct

In restricted visibility a towed vessel must sound a fog signal when it is（）.
A:the last vessel in the tow
B:the last vessel in the tow and it is carrying a crew
C:manned，regardless of its position in the tow
D:None of the above are correct

出自：海船船员证

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