Question 2135 Deck Safety

The correct answer is B) GM, which represents the metacentric height. The metacentric height (GM) is the vertical distance between the center of gravity (G) and the metacenter (M) of a floating vessel. This measurement is crucial in determining the stability of a ship or boat. A positive GM value indicates that the vessel is stable, while a negative GM value indicates instability. The other options are incorrect because: A) M represents the metacenter, not the metacentric height. C) GZ represents the righting arm, which is a different stability parameter. D) BM represents the transverse metacentric radius, which is also a different stability parameter.