A.in
B.up
C.above
D.on
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A.the center of volume of the immersed portion of the vessel
B.the center of gravity of the water plane
C.that point at which all the vertical downward forces of weight are considered to be concentrated
D.that point at which all the vertical upward forces of buoyancy are considered to be concentrated
A.the minimum depth of the river prescribed in the channel maintenance program
B.the edge of a dredged channel
C.the highest level to which the river may rise without flooding
D.the least available water in a channel which limits the draft of boats and tows
A.require ballast
B.be down by the head
C.sink
D.float
A.trim
B.yaw
C.heel
D.loll
A.mean draft
B.true mean draft
C.mean of the calculated drafts
D.draft at the center of flotation
A.geometric center of the waterplane area
B.intersection of the vertical centerline and line of action of the buoyant force
C.center of gravity of the vessel corrected for free surface effects
D.geometric center of the displaced volume
A.roll period
B.metacentric height
C.waterplane area
D.vessel's draft
A.waterline
B.freeboard deck
C.plimsoll mark
D.amidships section
A.KG is increased
B.KG is decreased
C.KG is not affected
D.KG increases at light drafts and decreases at deep drafts
A.increase the righting moment
B.increase the righting arm
C.increase list or trim
D.decrease list or trim
最新試題
The center of flotation of a vessel is（）.
After transferring a weight forward on a vessel，the draft at the center of flotation will（）.
Reserve buoyancy is the（）.
Although KG for a ship in lightweight is relatively high，the vessel is stiff because（）.
A vessel would be referred to as tender when the weight of the cargo is（）.
It is apparent that there was not sufficient depth of water（）and I claim that the estimated arrival draft as radioed to the agent to report to you was a close one.
Intact buoyancy is a term used to describe（）.
It’ll affect neither the draft（）the rotation of discharging.
For an upright vessel，draft is the vertical distance between the keel and the（）.
On the cargo manifest，the gross weight of a box containing cargo is the weight of the（）.