Stabilising cargo is a process that involves the use of BALLAST, which is a material placed in the hold of a ship to increase its stability and reduce its tendency to roll. BALLAST is typically made up of heavy materials such as rocks, sand, or iron, and is used to counterbalance the weight of the cargo and the ship's superstructure. The purpose of stabilising cargo is to ensure the safety of the ship and its crew, as well as the cargo itself.