Question 2101 Deck Safety

The correct answer is A) GZ. The righting arm, also known as the GZ curve, represents the tendency of a vessel to return to an upright position after being heeled or inclined. It is the horizontal distance between the center of gravity (G) and the center of buoyancy (Z), which creates a righting moment that opposes the heeling moment. This righting arm, or GZ, is a key factor in determining a vessel's stability and is essential for maintaining safe operations. The other options are incorrect because they represent different stability parameters: B) Angle MGZ is the angle of the righting arm, C) BM is the metacentric height, and D) GM is the distance between the center of gravity and the metacenter, which is a measure of initial stability.