問題一覧
1
TPC
is the mass which must be loaded or discharged to change the ship's mean draft in salt water by 1cm
2
Metacentre
the vertical through the centre of buoyancy at two consecutive angle of heel intersect at a point
3
Heel
The ship is said to be heeled when, when she is inclined by an external forces
4
List
A ship is said to be listed when she is inclined by internal forces within the ship
5
initial metacentre
the vertical through the center of buoyancy may be considered to cut the center line at a fixed point
6
metacentric height
Is the vertical distance between G and M
7
positive metacentre
if G is below M
8
negative metacentre
If G is above M
9
stable equilibrium
A ship is said to be in stable equilibrium, if when inclined, she tends to return to the initial position
10
righting lever
Is the perpendicular distance between the center of gravity and the vertical through the center of buoyancy
11
neutral equilibrium
When G coincides with M
12
immerse
sink
13
emerge
rise
14
G does not move but B move
change shape of underwater volume
15
GM
metacentric height
16
BM
metacentric radius
17
KM
height of metacenter
18
KG
vertical COG
19
center of gravity
the point at which all the mass of the body may be assumed to be concentrated
20
unstable equilibrium
Is inclined to a small angle tends to heel over still further
21
stiff
she will tend to return more quickly to the initial position
22
tender
easier to incline and will not tend to return so quickly to the initial position.
23
reserved buoyancy
volume of the enclosed spaces above the waterline