A.main brace
B.tow span
C.jockey bar
D.None of the above
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A.one sidelight
B.one sidelight and a masthead light
C.one sidelight and two masthead lights
D.both sidelights of a vessel and her masthead light(s)
A.vernier
B.psychrometer
C.hygrometer
D.stadimeter
A.information or regulatory buoy that has lateral significance
B.buoy that is off-station and is marked to warn mariners of its wrong position
C.dual purpose marking used where the ICW and other waterways coincide
D.buoy that was set in error and will be replaced with a red nun buoy
A.drill stem guide
B.guide frame
C.drill string frame
D.casing guide
A.increasing the righting moment
B.decreasing the vessel's displacement
C.increasing the reserve buoyancy
D.shifting the CG (center of gravity) off center
最新試題
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
A large valve，usually installed above the ram preventers，that forms a seal in the annular space between the pipe and wellbore or，if no pipe is present，on the wellbore itself is called the（）.
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.
A green buoy has a yellow triangle on it. This is a(n)（）.
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 fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.
A large basin cut into the shore，closed off by a caisson，and used for dry docking of ships is known as a（）.
A safe fuel system must（）.