Question 2068 Deck Safety

The correct answer is C) displacement of the vessel. The free surface correction depends on the dimensions of the surface of the free liquid and the displacement of the vessel. This is because the free surface of a liquid in a tank creates a virtual rise in the vessel's center of gravity, which reduces the vessel's stability. The magnitude of this effect is directly related to the vessel's displacement. The other options are incorrect because the location of the tank (A) and the height of the center of gravity (D) do not directly determine the free surface correction, while the volume of liquid (B) is only one factor, not the sole determinant.