A.Towing vessels
B.Offshore supply vessels
C.Barges，when manned
D.All of the above
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A.Chief Officer
B.Navigator
C.most senior person present from the Maritime Administration
D.officer in charge of the watch
A.Carefully and neatly erase the entry and rewrite it correctly
B.Cross out the error with a single line，write the correct entry，and initial it
C.Blot out the error completely and rewrite the entry correctly
D.Remove this page of the log book and rewrite all entries on a clean page
A.every week
B.a day
C.every trip
D.a watch or once a trip，whichever is shorter
A.any certificated tankerman
B.the Master of the vessel
C.the officer of the watch
D.the person designated as "person in charge"
A.You are within 3 nautical miles of the coast
B.The bottom in the area is sand and gravel
C.The fix is indeterminate
D.You are governed by the Inland Rules
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