单项选择题
A.any certificated tankerman
B.the Master of the vessel
C.the officer of the watch
D.the person designated as "person in charge"
单项选择题 At 0900，you take the following radar ranges: Watch Hill Point 5.4 miles; Block Island Grace Point 8.3 miles. Which statement is TRUE? （）
单项选择题 A passenger vessel is underway. When may passengers visit the pilothouse? （）
单项选择题 During a storm，the chance of fatigue failure of a mooring line will increase as（）.