A.Only a light layer of clothing may be worn underneath
B.They provide sufficient flotation to do away with the necessity of wearing a life jacket
C.They should be tight fitting
D.A puncture in the suit will not appreciably reduce its value

A.set it on the centerline of the boat
B.apply the correction for compass error
C.keep metal objects away from it
D.All of the above

A.remove their life preservers to make it easier to climb on board the rescue vessel
B.climb on top of the boat while waiting for their turn to transfer to the rescue vessel
C.remain seated inside and make the transfer one person at a time
D.enter the water and swim over to the rescue vessel

A.fuel supply valve should be closed
B.hatches，doors，and oar ports should be closed
C.air cylinder shut-off valve should be closed
D.engine should be shut off

A.secured forward and aft where readily available
B.secured amidships where they will not hinder the personnel
C.used for fending off
D.used for picking up survivors in the water