For every ship at sea, there is an invisible "point of no return." If the vessel crosses it, capsizing is no longer a risk—it's a mathematical certainty. This tipping point is known as a negative Metacentric Height (GM), and it happens when a ship's Center of Gravity (G) rises above its Metacenter (M). At that moment, the very forces that are meant to keep the ship upright—gravity and buoyancy—conspire to pull it over. The 'righting lever' that normally saves the ship becomes a 'capsizing lever'