SHIP STABILITY CALCULATION
Deadweight Particulars
Deadweight Cargo+Consumables+water ballast W Tonne
Longitudinal Centre of Gravity - LCG M
Vertical Centre of Gravity - VCG M
Free Surface Moment - FSM T-M
Longitudinal Moment Ml1 = W x LCG Ml1 T-M
Vertical Moment Mv1 = W x VCG Mv1 T-M
DWT Total DWT = Sum(W) DWT Tonne
Longitudinal Centre of Gravity LCG = Sum(Ml) / Sum(W) LCG M
Vertical Centre of Gravity VCG = Sum(Mv) / Sum(W) VCG M
Lightship Particulars
Weight - LS Tonne
Longitudinal Centre of Gravity - LCG M
Vertical Centre of Gravity - VCG M
Longitudinal Moment Ml2 = LS x LCG Ml2 T-M
Vertical Moment Mv2 = LS x VCG Mv2 T-M
Displacement Particulars
Displacement, D D = DWT + Lightship Displ, D Tonne
Longitudinal Moment Ml = Ml1 + Ml2 Ml T-M
Vertical Moment Mv = Mv1 + Mv2 Mv T-M
Free Surface Moment - FSM T-M
Longitudinal Centre of Gravity LCG = Ml / D LCG M
Vertical Centre of Gravity KG0 = Mv / D KG0 M
Free Surface Moment Correction FSC = FSM / D FSC M
KG Fluid, KG KG = KG0 + FSC KG M
Hydrostatic Properties
Draft at LCF - TLcf M
Length between Perpendiculars - LBP M
Longitudinal Centre of Buoyancy - LCB M
Longitudinal Centre of Floatation - LCF M
Moment per 1 cm Trim - MCT T-M
Transverse Metacentric Height - KMT M
Trim (+ve Aft, -ve Fwd) Trim = (LCB - LCG) x D / ( MCT x 100) Trim M
Draft Aft Taft = TLcf + LCF x Trim / LBP Taft M
Draft Fwd Tfwd = TLcf - (LBP - LCF) x Trim / LBP Tfwd M
Draft Midship Tmid = (Taft + Tfwd) /2 Tmid M
GM Fluid, GMT GMT = KMT - KG GMT M