A.fore
B.advance
C.before
D.beforehand
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A.ballast
B.reserve buoyancy
C.displacement
D.rolling periods
A.or
B.and
C.nor
D.either
A.for my vessel crossing safely
B.my vessel is to cross safely
C.for my vessel to cross safely
D.for my vessel's crossing safely
A.the volume of all intact spaces above the waterline
B.an intact space below the surface of a flooded area
C.an intact space which can be flooded without causing a ship to sink
D.the space at which all the vertical upward forces of buoyancy are considered to be concentrated
A.center of gravity
B.amidships station
C.center of flotation
D.geometric center of the waterplane area
A.a little deeper aft
B.a little deeper forward
C.at the same draught between fore and aft
D.a balance between two sides
A.increase the righting moment
B.increase the righting arm
C.increase list or trim
D.decrease list or trim
A.require ballast
B.be down by the head
C.sink
D.float
A.waterline
B.freeboard deck
C.plimsoll mark
D.amidships section
A.average of the observed drafts
B.draft at the center of flotation
C.draft corresponding to the calculated displacement
D.mean of the calculated drafts
最新试题
If the cause of severe list or trim is off-center ballast,counterflooding into empty tanks will().
Some cargoes are()in weight but()in size.
In practice,it is usual for the ship to be loaded()to improve the vessel’s movement through the water.
The center of volume of the immersed portion of the hull is called the().
The center of buoyancy is located at the().
If the buoyant force on a ship’s hull is equal to the displacement tonnage,the ship will().
Reserve buoyancy is().
On the cargo manifest,the gross weight of a box containing cargo is the weight of the().
For an upright vessel,draft is the vertical distance between the keel and the().
The controlling depth of the river is().