Download - GZ Curves Revised
GZ CurvesLet G move G1, Then it can be seen with a shift of CARGO, the Vessel will Capsize Earlier
GZ(m) Initial GZ
GZ Max GZ Max
Vessel with the shift of cargo
GM
Angle of vanishing stability < v/s
Heel Dec RANGE 57.3
Summary: 1.GM does not change 2. Deck age does not change 3.At 0 deg GZ does not change 4.Vsl as a list /GZ =0 5.GZ max is Reduced 6.Angle V/S Reduced 7.Range Reduced 8.Area under Curve Reduced Remarks: a) Shift of Bulk Cargo
m1 g g Cargo G
B 1) GM Reduced 2) Deck age Immersion not Changed 3) GZ at 0 deg is negative
G B
G1
G
G1 B B GZ=positive Reduced
GZ Negative (Reduced)
GZ=0
Let G move to G1 then it can be seen on the vessel that the shift of the Bulk cargo will Cap size earlier Below Graph illustrates that when the bulk cargo is shifted earlier the Vessel will capsize
GZ(m)
GZ(max)
Initial GZ
GM GM Deck age 57.5
Angle of vanishing stability
heel
RANGE Summary: 1) GM is reduced 2) Deck age remains the same 3) At 0 GZ is Negative 4) Vessel has a list GZ=0 5) GZ max reduced 6) Angle of vanishing stability reduced 7) Range Reduced 8) Area Remarks:
Non Symentrical Icing G1 ice
M
G W/L2 W/L1 B Summary: 1) GM reduced 2) Angle of deck age immersion Reduced 3) GZ is Negative
Lets move G to G1 then it can be seen that the Vessel with a Non symmetrical icing and heavy lift will capsize earlier
GZ(m) Angle of vanishing stability
Initial GZ GZ max GM
Deck ageSummary: 1) GM is reduced 2) Deck age is reduced 3) At 0 GZ is negative 4) Vessel has a list GZ=0
57.3
5) GZ max reduced 6) Angle of vanishing stability is reduced 7) Range Reduced 8) Area Reduced
Bilging of a side compartment M
G
W/L2 W/L1
Ship side Hole B Summary: 1) Assume GM is reduced 2) Deck age is reduced 3) GZ is negative
GZ(m)
Initial GZ GZ max