Question 2056 Deck Safety

The correct answer is C) the sum of the vertical moments of the vessel. The KG (height of the center of gravity) of a vessel is found by dividing the displacement into the sum of the vertical moments of the vessel. This is based on the principle that the overall center of gravity of a vessel must be in the same vertical line as the center of buoyancy. By calculating the sum of the vertical moments, you can determine the location of the center of gravity and therefore the KG. The other options are incorrect because they do not accurately represent how the KG is calculated. Option A refers to the height of the center of gravity, which is what the KG itself represents. Option B and D refer to longitudinal and free surface moments, which are not directly used in the KG calculation.