单项选择题
A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit（）.
A.the masthead lights for a towing vessel
B.the lights for a vessel restricted in its ability to maneuver
C.sidelights，stern light and towing light
D.All of the above
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相关考题
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单项选择题
A vessel towing a barge astern would show，at the stern（）.
A.only a stern light
B.a towing light above the stern light
C.two towing lights in a vertical line
D.two white lights in a vertical line -
单项选择题
A vessel sighting a northern right whale dead ahead should（）.
A.maintain course and speed
B.alter course to give a wide clearance
C.report the whale's position to the Canadian Coast Guard
D.All of the above -
单项选择题
A vessel showing a rigid replica of the International Code flag “A” is engaged in（）.
A.diving operations
B.dredging
C.fishing
D.mineclearance operations
