（）measured at the midship section and taken from outside of the ship’s side shell plating on one side to the outside of ship’side shell plating on the other side.

（）is a point midway between the forward and the after p...

单项选择题（）is a point midway between the forward and the after perpendicular.

（）length of the ship measured from extreme points of th...

单项选择题（）length of the ship measured from extreme points of the ship forward and aft.

You should always wear（）when working on deck.A.helmetB....

单项选择题You should always wear（）when working on deck.