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
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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 -
单项选择题
A gas-free certificate would usually be issued by a(n)（）.
A.CCS marine surveyor
B.certified marine chemist
C.port engineer
D.MSA marine inspector -
单项选择题
A complaint of unseaworthiness by a majority of crew members to the American Consul is found to be justified after a survey is completed. Who must pay the cost of the survey?（）
A.Crew members requesting the survey
B.American Consul
C.Master
D.Vessel's owners
