单选题You have a large，broken-down vessel in tow with a wire rope and anchor cable towline. Both vessels have made provision for slipping the tow in an emergency; however，unless there are special circumstances（）.Athe towing vessel should slip firstBthe vessel towed should slip firstCthey should slip simultaneouslyDeither vessel may slip first
单选题
You have a large，broken-down vessel in tow with a wire rope and anchor cable towline. Both vessels have made provision for slipping the tow in an emergency; however，unless there are special circumstances（）.
A
the towing vessel should slip first
B
the vessel towed should slip first
C
they should slip simultaneously
D
either vessel may slip first
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