Question 2157 Deck Safety

The correct answer is D) height of the center of gravity. The difference between the height of the metacenter and the metacentric height is known as the height of the center of gravity. This is because the metacentric height is the distance between the center of gravity and the metacenter, which is the point where the buoyancy force acts. The height of the center of gravity is a crucial factor in determining the stability of a vessel, as it affects the righting arm and the vessel's ability to right itself in the event of a disturbance. The other options are incorrect because they do not directly represent the difference between the height of the metacenter and the metacentric height. The height of the center of buoyancy (A) and the righting arm (B) are related but distinct concepts, while the metacentric radius (C) is a different measurement.