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)
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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
A.one control
B.two controls
C.three controls
D.none of the above
最新試題
An obstruction on a helodeck is any object that might present a hazard to the（）.
A safe fuel system must（）.
All ships（）suspected infectious disease on board should radio information to Port Health Officer.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.
An inert gas system on a tanker should be used to（）.
A fire is discovered in the bow of your vessel while making way. The wind is from ahead at 35 knots. You should（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
A fishing vessel displaying the lights shown is（）.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
A green buoy has a yellow triangle on it. This is a(n)（）.