Question 2063 Deck Safety

The correct answer is C) using an on board crane to lift a freely swinging heavy object. When a heavy object is lifted by a crane, the object's center of gravity rises above its original position, causing a virtual rise in the vessel's overall center of gravity. This can negatively impact the vessel's stability and increase the risk of capsizing. The other options are incorrect because: A) Transferring ballast between tanks does not necessarily cause a rise in the center of gravity. B) Filling a partially filled tank may cause the center of gravity to rise or fall, depending on the tank's location and the amount of liquid added. D) Emptying a partially filled tank would not cause a virtual rise in the center of gravity.