What Are Forklift Pockets on Shipping Containers?
If you’ve ever seen a shipping container being lifted or repositioned at a port or construction site, there’s a good chance a forklift was involved. But what makes that lift possible in the first place? Forklift pockets.
These rectangular slots are built into the base of many shipping containers and are designed to accommodate the forks of heavy-duty forklifts. They allow operators to lift and move containers in tight spaces where cranes or other large equipment might not be practical.
Forklift pockets are mostly found on 20-foot containers and are positioned along the bottom side rails, parallel to the centerline of the container. They are strong, stable, and reliable when used correctly. But not all containers have them, and not all forklifts should be used to lift containers.
Why Forklift Pockets Matter
Forklift pockets are a smart solution for ground-level handling. Without them, you would need a crane or spreader bar system that locks into the container’s top corner castings to move it. That kind of equipment is expensive, takes time to set up, and isn’t always available on job sites.
Pockets give operators more flexibility and can significantly cut down the time and labor required to move containers around. This is especially helpful in container yards, construction zones, and remote areas where large equipment is limited.
However, forklift pockets are not a catch-all solution. You will rarely see them on 40-foot containers. That is because lifting a container of that size, even when empty, with a forklift is risky. The weight distribution is harder to manage, and the longer container can bend or shift dangerously if not supported correctly. For these reasons, 40-foot containers are typically moved using cranes or specially designed trailers.
Not All Forklifts Are Built for the Job
There is a big difference between a warehouse forklift and a container-handling forklift. Most warehouse forklifts are designed for light-to-moderate loads like pallets, machinery, or boxes. They are built for indoor use on smooth surfaces and over short distances.
Shipping containers, on the other hand, are incredibly heavy, especially when loaded. A standard 20-foot empty container weighs about 5,000 pounds. Add cargo, and the weight increases significantly. Lifting that kind of load requires a high-capacity forklift built specifically for container handling. These machines have extended forks, enhanced stability, and higher weight limits.
Trying to lift a container with the wrong equipment can result in:
- Damaged containers or forklifts
- Serious injury or fatalities
- Product loss from dropped or unbalanced cargo
- Liability and insurance issues
Always check the forklift’s rated capacity and the container’s total weight before attempting a lift. If you are unsure, do not guess. Use the right equipment or call in a professional.
Types of Forklift Pockets and Related Container Features
Forklift pockets are not the only feature designed to help with container mobility. Here are a couple of others worth knowing about:
- Grappler Pockets
Some containers come with grappler pockets, which are slots used by machines that lift containers from the sides using mechanical arms. These are often used as an alternative to traditional top-lift spreaders, which engage the container’s corner castings. Grappler systems can offer more flexibility in certain yard configurations and are often used where space is tight or specialized lifting angles are required. - Gooseneck Tunnels
While forklift pockets are rare on 40-foot containers, many of them are designed with gooseneck tunnels. These are recessed sections in the bottom front of the container that allow it to sit securely on a gooseneck trailer. This design helps lower the container’s center of gravity and improves weight distribution during transport.
Gooseneck compatibility is key for long-haul trucking and intermodal transport. It ensures that the container stays balanced and secure on the trailer while maximizing height clearance for bridges and overpasses.
Common Issues with Forklift Pockets
Forklift pockets are simple, but they can cause problems if not maintained properly. One of the most common issues is foreign objects getting lodged inside the pockets. This can happen in a few ways:
- Tools left behind: Workers may accidentally leave screwdrivers, wrenches, or other small tools inside their pockets.
- Wind-blown debris: Trash, packaging, or other materials can blow into the pocket and go unnoticed.
- Rust or corrosion: Over time, pockets exposed to moisture can rust or weaken, especially if the container is stored outdoors for long periods.
When prongs are inserted into a blocked or damaged pocket, it can cause the container to shift unexpectedly or become unbalanced. This puts the load, the forklift, and the operator at serious risk.
To avoid this, operators should inspect forklift pockets regularly and keep them clear. Some companies install pocket covers when the container is not in use to prevent unwanted debris or moisture buildup.
Forklift Safety Tips for Handling Containers
Forklifts are incredibly useful tools in container yards and industrial settings, but they must be operated with caution. Here are some key safety practices:
- Always use a forklift rated for container lifting
Do not try to lift a container with standard indoor equipment. Use heavy-duty models designed for outdoor, high-capacity work. - Inspect forklift pockets before use
Make sure there are no obstructions, rust, or structural issues that could compromise the lift. - Know the container’s weight
Check the container’s weight, including cargo, and make sure it does not exceed your forklift’s limits. - Use even ground
Lift containers on flat, stable surfaces to prevent tipping or loss of control. - Train your team
Make sure all operators are properly trained and certified for container handling.
Need Containers or Equipment Advice?
Whether you are looking to buy, rent, or just learn more about how to safely handle shipping containers, Transocean Equipment Management is here to help. We offer a wide selection of containers and expert guidance on how to move and store them properly.
Get in touch today and talk to someone who understands your needs and can help you find the right solution!
