单项选择题
A.American Consul B.Chief and Second Mates C.Vessel's agent D.vessel's owners
A vessel engaged in（）shall not impede the passage of an...
单项选择题A vessel engaged in（）shall not impede the passage of any other vessel navigating within anarrow channel or fairway.
A.mine clearance operation B.towing operation C.dredging or surveying or underwater operation D.fishing
A vessel aground would show the same dayshape as a（）.A....
单项选择题A vessel aground would show the same dayshape as a（）.
A.vessel towing a submerged object B.dredge underway and dredging C.hydrographic survey vessel at anchor and surveying D.None of the above
A survey (special purpose mark) buoy（）.A.must be lighte...
单项选择题A survey (special purpose mark) buoy（）.
A.must be lighted B.may have a flashing red light C.may have a fixed white light D.None of the above
