Patent ID: 8157490

Claim:
A method for securing freight containers on a deck of a ship, comprising: installing a movable lift on a rail provided on a lashing bridge or on a deck so as to be movable in a horizontal direction and a vertical direction, the lashing bridge provided on the ship in a lateral direction; coupling the freight containers to each other using twistlocks in a vertical direction; aligning the freight containers with each other by a container aligning device producing tensile force generated in a horizontal direction according to the operation of a hydraulic cylinder and to align the freight containers, the container aligning device provided on a work table provided on the movable lift; coupling adjacent left and right ones of the containers on a same hatch cover to each other using couplers; and coupling adjacent left and right ones of the containers on different hatch covers to each other using variable type coupling devices such that the freight containers are coupled to or integrated with each other along an entire width of the ship or some width thereof.