The Vessel can be（）in lawful trades between ports，anchorages or places where it is customary for similar size vessels to lie safely aground.

A.the most common method used in the United States
B.too expensive for common use
C.generally safe to sea life
D.authorized only with prior approval of the Federal On-Scene Coordinator

A.cool the craft in a fire
B.cool the engine
C.spray oil on the sea to calm it
D.spray personnel during a fire