Angle of Heel at GZ Max Calculator

Stability Assessment Tool

Calculate the angle of heel at which maximum righting arm (GZ max) occurs

This is an empirical method to calculate the angle of heel at GZ max as an alternative to taking it from a GZ curve.

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Project Information

Input Parameters

Total mass/displacement of the vessel
Length of vessel at waterline
Beam of vessel at waterline
Transverse distance from centerline to centre of buoyancy
Formula Used:
Angle of Heel at GZmax = tan-1(m / (254 × Lwl × Bwl × Bcb))

Where:
• m = Mass of boat (displacement)
• Lwl = Length at waterline
• Bwl = Beam at waterline
• Bcb = Beam to centre of buoyancy
• Result is the angle of heel in degrees at which maximum righting arm (GZ max) occurs