A.slipway
B.graving dock
C.ground warp
D.caisson dock
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A.a 2-second blast every 20 seconds
B.a 4-second blast every 20 seconds
C.an 8-second blast every 30 seconds
D.a 10-second blast every 30 seconds
A.turn off all lights that interfere with the navigation lights
B.turn on all available working lights on deck
C.ring the bell rapidly for five seconds once a minute
D.display two black diamonds in a vertical line during the day
A.Aye Aye Sir
B.Right 15 degrees rudder
C.Rudder is right 15 degrees
D.No reply is necessary，just carry out the order
A.heavy-walled drill pipe
B.tool joint
C.down hole tool
D.drill collar
A.main brace
B.tow span
C.jockey bar
D.None of the above
最新試題
After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.
A hand held instrument used to measure distances between objects and the ship is a（）.
A flooded leg on a liftboat would adversely affect the vessel’s stability underway by（）.
A helmsman receives the command “Right 15 degrees rudder.”The helmsman’s IMMEDIATE reply should be（）.
An inert gas system installed on a tanker is designed to（）.
A jack-up drilling rig being towed must（）.
Permanent magnetism is caused by（）.
A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
All ships（）suspected infectious disease on board should radio information to Port Health Officer.
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.