A.only after two hours in the water
B.only after four hours in the water
C.before entry into the water
D.upon entry into the water
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A.when approved by the lockmaster
B.when locking downbound
C.at no time
D.during high water only
A.it increases the likelihood of collision between the towing vessel and the disabled vessel
B.recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towline
C.the monkey fist may injure someone
D.it may reduce the catenary and increase yawing
A.route
B.track
C.heading
D.course over the ground
A.course
B.track
C.heading
D.course over the ground
A.a difference in water pressure
B.the method of breaking up the water stream
C.the length of the applicator
D.All of the above
最新試題
The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm （）.
The external flotation bladder of an immersion suit should be inflated（）.
The damage to a vessel is over $25，000. Who must notify the nearest Coast Guard Marine Safety or Marine Inspection Office as soon as possible? （）
The design specifications for cranes and crane foundations on ship’s are set and published by the（）.
Which channel and mode should be used when initiating a distress alert transmission（）.
Which instrument is most useful in forecasting fog（）.
The port State control officer or the surveyor authorized by the port State Administration must be aware that（）may be carried on product carriers.
Which statement about radio navigational warnings is TRUE（）.
The disadvantage of using a heaving line to pass a towline is that（）.
While proceeding to a distress site，you hear the words “Seelonce mayday” on the radiotelephone.Which action should you take（）.