Frapping lines are fitted to lifeboat davits to ______.
A.secure the lifeboat in the davits when in the stowed position
B.bring the life boat close along the rail in the embarkation position
C.give the occupants a safety line when the boat is being lowered from the embarkation level
D.reduce the swinging of the lifeboat at the embarkation level
正确答案：D
止荡绳被固定在救生艇吊艇柱上以减少救生艇在登艇甲板时的摇晃
