Heel

Heel is the transverse angular inclination of a ship about its longitudinal axis, measured in degrees from the upright. A steady heel comes from an external or internal transverse moment, wind, a turn, an off-center weight, or asymmetric flooding, balanced where the righting moment equals the heeling moment. It is read on the GZ curve as the angle where the righting arm matches the applied heeling arm. Heel is distinct from list, which usually denotes a steady heel from an internal cause such as off-center loading or flooding, and from roll, which is the dynamic oscillation. Large steady heel reduces the remaining range of positive stability.