单项选择题
The height from water level to deck is called （）(干舷).
A. draft B. freeboard C. draught D. port side
单项选择题 The hull is divided by decks and （）(舱壁).
单项选择题 These tanks are called （）(双层底) tanks.
单项选择题 At the fore end of a ship is the fore （）(尖舱).
