A.close
B.open
C.switch off
D.switch on
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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
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
最新試題
The port State control officer may ensure that（）are exhibited in conspicuous places throughout the ship.
The dangerous semicircle of a typhoon in the Southern Hemisphere is that area（）.
The dew point is reached when the（）.
The fog is lifted，so（）the radar．
The name and hailing port of a documented commercial vessel is（）.
The design specifications for cranes and crane foundations on ship’s are set and published by the（）.
The disadvantage of using a heaving line to pass a towline is that（）.
Which instrument is most useful in forecasting fog（）.
The port State control officer will ensure that（）is performed by all crude carriers either required to have a crude oil washing system or where the owner or operator chooses to install a crude oil washing system.
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? （）