单项选择题
A.The line over the summer load waterline
B.The line above the tropical load waterline
C.The line below the tropical load waterline
D.The line between the summer and the winter north Atlantic load waterline
单项选择题 Which of the followings best indicates how many tons of cargo a vessel can carry?（）.
单项选择题 Whose uty is it to examine and verify the state and condition of the cargo carried on board?（）.
单项选择题 Whose duty is it to examine and verify the state and condition of the cargo carried on board?（）.