A vessel must proceed at a safe speed（）.

A.There is danger of heavy cargo sweat if outside air is introduced by ventilation
B.Danger of the ship sweat exists.Constant and vigorous ventilation is required
C.There is little danger of ship's sweat;slight possibility of cargo sweat
D.The possibility of any ship or cargo sweat is remote

A.by a tow line ahead of the vessel
B.forward on either bow of the vessel
C.approximately amidships of the vessel
D.on the vessel's quarter

A.it is overtaken by the tow
B.it is pulled sideways by the tow
C.the weight of the towing hawser causes loss of maneuverability
D.the propeller is fouled by the towing hawser