Stacking cones are specially made to align stacked containers in the hold of a ship or on a terminal and prevent them from falling, but they do not lock containers together. To make sure the containers do not fall, a double stacking cone can be placed aligning the containers horizontally. There are different types of stacking cones: bottom and intermediate stackers, terminal stackers, self hanging stackers (with or without flange), guide cones and compensating stacking cones.