What is the stability term for the distance from the center of gravity (G) to the Metacenter (M), when small-angle stability applies?

Correct Answer: Option D — metacentric height

Metacentric height (GM) is defined as the vertical distance measured from the center of gravity (G) to the metacenter (M). This fundamental value governs a vessel's initial resistance to rolling and is critical for compliance with Title 46 CFR stability requirements.