Liebherr Optimizes Ship Loading with Compact Winch Solution

Maritime logistics, short-sea shipping, and port operations are increasingly seeking alternatives to crane-based cargo handling, prompting Liebherr to develop a modified rope winch solution for side loader systems that enable direct onboard transport of pallets and coils without containers or quay cranes.

The solution was developed for North Sea Handling as part of a ship concept deployed on eight vessels operated by a Dutch shipowner. The system allows forklifts to load cargo directly into a side loader installed within a hull opening, which then transports goods between deck levels. This approach reduces reliance on external port infrastructure while improving handling efficiency within constrained ship environments.

Modified winch design for space-constrained installations
The winch is based on Liebherr’s LWP 1632 series but incorporates a modified configuration in which the planetary plug-in gearbox is mounted on the opposite side of the motor. This separation of motor and brake components enables more flexible positioning within the vessel and improves accessibility for maintenance.

Such a configuration is particularly relevant in shipboard installations, where space limitations often restrict component layout. By optimizing the arrangement of drivetrain elements, the design supports integration into compact side loader systems without compromising serviceability.

Load capacity and performance characteristics
Each winch provides a total rope pulling force of 361 kN, distributed across two ropes with 180.5 kN each, and supports load capacities of up to 30 tonnes. These specifications enable the handling of heavy cargo such as steel coils and palletized goods across multiple deck levels.

The system is designed to maintain stable and controlled lifting operations, which is essential for ensuring safety and precision in confined onboard environments.




Enabling crane-free cargo handling
The integration of the winch into a side loader system allows cargo to be transported directly into and within the vessel using forklifts, eliminating the need for traditional container handling or crane systems. This reduces port dependency and can shorten loading and unloading times, particularly in smaller ports or locations with limited infrastructure.

In addition to operational efficiency, the system contributes to improved space utilization within the cargo hold, as it removes the need for container stacking and associated handling equipment.

Operational and environmental considerations
The side loader concept supported by the winch system enables several operational advantages, including increased cargo throughput (in tonnes per hour), faster turnaround times in port, and more precise cargo handling.

Energy regeneration capabilities within the system also contribute to reduced emissions during harbour operations. Furthermore, improved loading efficiency can support slower sailing speeds, which is a recognized method for reducing fuel consumption and emissions at sea.

Position within maritime cargo handling technologies
Traditional ship loading operations typically rely on quay cranes or onboard lifting systems, which can limit flexibility and require significant port infrastructure. The integration of compact, high-capacity winches into side loader systems represents an alternative approach that shifts part of the handling process onboard.

By combining high pulling force with a space-optimized design, the modified LWP 1632 winch supports new vessel concepts focused on efficiency, autonomy, and reduced environmental impact in maritime logistics. Initial deliveries are scheduled to begin in the coming summer, marking the implementation phase of this cargo handling approach.

Edited by Industrial Journalist, Natania Lyngdoh — Adapted by AI.

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