Ship Stability Formulae

Are you studying ship stability? Even if you aren't - try and guess the commonly used abbreviations for each of the formula descriptions!

For the angle questions, please use "A" or "a" for the angle substitute e.g. Aflooding

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Last updated: February 6, 2024

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Hint	Answer
Actual Heeling Moment	AHM
Arithmetic Mean Draft	AMD
After Perpendicular	AP
Height of Metacentre from Centre of Buoyancy	BM
Block Coefficient	Cb
Change of Trim	CoT
Coefficient of Waterplane Area	Cw
Forward Perpendicular	FP
Free Surface Correction	FSC
Free Surface Effect	FSE
Free Surface Moments	FSM
Fresh Water Allowance	FWA
Horizontal Shift in Centre of Gravity	GGh
Vertical Shift in Centre of Gravity	GGv
Metacentric Shift	GM
Righting Lever / Arm	GZ
Intact Water Plane Area	IWPA
Height of Centre of Buoyancy from Keel	KB
Height of Centre of Gravity from Keel	KG
Height of Metacentre from Keel	KM
Length Between Perpendiculars	LBP
Longitudinal Centre of Buoyancy	LCB
Longitudinal Centre of Floatation	LCF
Longitudinal Centre of Gravity	LCG
Length Over All	LOA
Moment to Change Trim by one Centimetre	MCTC
Maximum Permissible Grain Heeling Moment	MPGHM
Moment of Statical Stability	MSS
Relative Density	RD
Residual Dynamic Stability	RDS
Righting Moment	RM
Transverse Centre of Gravity	TCG
True Mean Draft	TMD
Tonnes Per Centimetre Immersion	TPC
Total Volumetric Heeling Moment	TVHM
Vertical Centre of Gravity	VCG
Volumetric Heeling Moment	VHM
Wind Heeling Moment	WHM
Waterplane Area	Aw
Angle of Deck Edge Immersion	Adei
Angle of Flooding	Af

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