单项选择题
A.one approved flotation cushion for each person on board
B.one approved life preserver for each person on board and one life ring
C.one approved inflatable vest for each person on board
D.lifeboat capacity equal to 1 1/2 times the number of persons on board
单项选择题 The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to（）.
单项选择题 The maximum speed of lowering for a lifeboat on gravity davits is controlled by the（）.
单项选择题 The Master or person in charge of a ship shall insure that each deck from which lifeboats are launched is（）.