The point at which the weight of the boat acts vertically downwards? What is the letter?

• A. F
• B. G
• C. H
• D. L

Answer: (B)

Weight acts vertically downward through the center of gravity. This is the point where the vessel’s entire mass can be considered to be concentrated for equilibrium. The line of action of gravity runs straight down through that point regardless of the vessel’s orientation, which is why CG is the reference for where the weight force acts. The center of buoyancy, by contrast, is where the buoyant force acts upward, and the interaction between these two points (through hull tilting and the metacenter) determines stability. So the point described—the one where the weight acts vertically downward—is the center of gravity.