Cargo handling systems used for pallets and paper rolls. Usually a side-loading system consists of elevators and a side door. The Norwegian company TTS-Mongstad AS has developed different systems such as the system working with conveyors, the Sidemover or the Sideswinger. The side door and ramp system is the most commonly used side-loading system on coastal ships, smaller reefer ships and paper carriers. The use of the side door as a driving ramp eliminates movements of the ship relative to the quay while the forklift trucks are placing cargo on, or retrieving cargo from the elevator.