航海英语船舶浮性资料章节练习(2018.01.07)

单项选择题
Reducing the liquid free surfaces in a vessel reduces the（）.
A.roll period
B.metacentric height
C.waterplane area
D.vessel's draft
单项选择题
Intact buoyancy is a term used to describe（）.
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
单项选择题
In the absence of external forces，the center of buoyancy of an inclined vessel is vertically aligned directly below the（）.
A.center of gravity
B.amidships station
C.center of flotation
D.geometric center of the waterplane area
单项选择题
The angle to which a floating ship，with a negative initial metacentric height，lies while at rest in still water is the angle of（）.
A.trim
B.yaw
C.heel
D.loll
单项选择题
Shifting weight aft in heavy weather will reduce the tendency to yaw，but may increase the tendency to（）.
A.be pooped
B.pitchpole
C.broach
D.squat
单项选择题
A deep draft VLCC (100，000 DWT+) navigating in a narrow channel or canal（）.
A.draws more water than when underway in deep water
B.draws less water with an increase in speed
C.requires less power for a given speed
D.steers better under full power
单项选择题
A common occurrence when a vessel is running into shallow water is that（）.
A.the wake is less pronounced
B.the vessel is more responsive to the rudder
C.squat will cause a decrease in bottom clearance and an increase in draft
D.All of the above
单项选择题
The center of buoyancy is located at the（）.
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
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
单项选择题
A disk with a horizontal line through its center，equivalent to the summer load line，is called the（）.
A.deadrise mark
B.maximum allowable draft mark
C.plimsoll mark
D.tonnage mark