A.require ballast
B.be down by the head
C.sink
D.float
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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
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.KM is small
B.KM is high
C.BL is small
D.KB is large
A.INTERNATIONAL LOAD LINE CERTIFICATE
B.PASSENGER SHIP SAFETY CERTIFICATE
C.CARGO SHIP SAFETY CONSTRUCTION CERTIFICATE
D.GENERAL DECLARATION
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On a semisubmersible ship，reserve buoyancy is increased by the presence of void spaces above the waterline in the（）.
The controlling depth of the river is（）.
The center of volume of the immersed portion of the hull is called the（）.
Allowance for fresh water for all freeboards other than timber 25mm. This wording is likely to appear in（）.
In the absence of external forces，the center of buoyancy of an inclined vessel is vertically aligned directly below the（）.
For an upright vessel，draft is the vertical distance between the keel and the（）.
It’ll affect neither the draft（）the rotation of discharging.
A vessel is tender if cargo weight is（）.
Keeping the draft at or below the load line mark will insure that the vessel has adequate（）.
On the cargo manifest，the gross weight of a box containing cargo is the weight of the（）.