单项选择题
When whistle signals are used for launching lifeboats，one short blast means（）.
A.use the float-free method only
B.lower all boats
C.raise all boats
D.drill is over，secure all boats
相关考题
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单项选择题
When should you use distress flares and rockets?（）
A.Only when there is a chance of their being seen by rescue vessels
B.At half-hour intervals
C.At one-hour intervals
D.Immediately upon abandoning the vessel -
单项选择题
When launching a lifeboat，the tricing pennants should be released（）.
A.before the boat is lowered from the stowed position
B.as the boat-fall blocks break clear of the davit head
C.before the boat is lowered from the embarkation level
D.after the boat is released into the water -
单项选择题
When landing a lifeboat through heavy surf with a strong current running parallel to the beach (from right to left when facing from seaward) the recommended procedure is to（）.
A.approach while coming to the left to take advantage of the current
B.drop an anchor outside the surf line，then pay out anchor line over the bow while the seas carry the boat toward the beach
C.approach slow enough so that the boat can be brought around to meet breaking seas on the bow
D.rig a drogue with tripping line over the bow，back ashore with drogue tripped between breakers
