单项选择题

For a floating vessel，true mean draft is always the（）.

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

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单项选择题

Deballasting a double bottom has what affect on KG?（）

A.KG is increased
B.KG is decreased
C.KG is not affected
D.KG increases at light drafts and decreases at deep drafts

单项选择题

Although KG for a ship in lightweight is relatively high，the vessel is stiff because（）.

A.KM is small
B.KM is high
C.BL is small
D.KB is large

单项选择题

Allowance for fresh water for all freeboards other than timber 25mm. This wording is likely to appear in（）.

A.INTERNATIONAL LOAD LINE CERTIFICATE
B.PASSENGER SHIP SAFETY CERTIFICATE
C.CARGO SHIP SAFETY CONSTRUCTION CERTIFICATE
D.GENERAL DECLARATION