单项选择题
The （）from waterline to the bottom of the ship is called draft.
A.breadth B.depth C.width D.height
单项选择题 The （）part of the ship on port is called the port bow.
单项选择题 Because of the （）, we have to keep a sharp lookout.
单项选择题 In the （）weather, we have to open the navigational light.
