Devanning

Devanning is the process of unloading cargo from a shipping container. The term applies specifically to ocean freight containers, typically 20-foot or 40-foot steel boxes, and is used interchangeably with “container stripping” or “destuffing” in different parts of the industry. When a container arrives at a warehouse after being drayed from a port terminal, the devanning crew opens the doors and removes everything inside, whether that cargo is palletized, floor-loaded, or a mix of both.

Floor-Loaded vs. Palletized Containers

The devanning process varies significantly depending on how the container was loaded at origin. Palletized containers are the faster option. A forklift operator can pull standard 40×48-inch pallets straight out of the container, one at a time, and stage them in the receiving area. A 40-foot container holding 20 pallets can be fully devanned in 30 to 60 minutes with a single forklift and operator.

Floor-loaded containers are a different story. Goods are loaded loose, stacked from floor to ceiling and wall to wall, to maximize the container’s cubic capacity. This is common for imports from China and Southeast Asia, where suppliers load individual cartons by hand to fit as much product as possible into the available space. A floor-loaded 40-foot HC container can hold 2,500 to 3,000 cartons or more. Devanning these requires a crew of two to four workers physically carrying or hand-trucking cartons out of the container, sorting them by SKU, counting them against the packing list, and stacking them onto pallets at the dock. This process takes two to five hours depending on carton weight, product mix, and crew size.

Equipment and Labor

The basic equipment for devanning includes a forklift (for palletized loads), hand trucks or roller conveyors (for floor-loaded cargo), pallet jacks, shrink wrap, and a dock with a leveler or ramp that matches the container’s floor height. Many warehouses use extendable roller conveyors that slide into the container, allowing workers at the back to place cartons on the conveyor and send them out to a staging area where another crew member palletizes them. This setup reduces the physical toll on workers who would otherwise carry 30- to 50-pound cartons across the full 40-foot length of the container repeatedly.

Labor cost is the primary expense driver. At $18 to $25 per hour per worker, a four-person crew spending four hours on a single floor-loaded container costs $288 to $400 in labor alone. Adding equipment wear, facility overhead, and the opportunity cost of tying up a dock door, the total devanning cost for a floor-loaded 40-foot container typically runs $350 to $600 at most third-party warehouses.

Receiving and Counting

Devanning is not just physical labor. It is the first checkpoint in the receiving process. As cartons come out of the container, warehouse staff verify quantities against the supplier’s packing list and commercial invoice. They check for visible damage, water intrusion, mold, pest evidence, and labeling discrepancies. Any shortages, overages, or damaged units are documented immediately, because filing a cargo insurance claim or supplier dispute weeks later without receiving documentation is far more difficult.

For FBA-bound cargo, the devanning stage often overlaps with initial quality inspection. If a shipment arrives with crushed cartons, missing labels, or incorrect product counts, those issues need to be identified before the goods proceed to the prep and labeling stage. Catching problems at devanning saves time and prevents contaminated or damaged inventory from entering Amazon’s fulfillment network.

Timing and Chassis Costs

Speed matters during devanning because of chassis and container economics. Most drayage deliveries arrive on a rented chassis, and the daily chassis rental fee (typically $30 to $75 per day) starts accumulating the moment the container leaves the port terminal. Container per diem charges, assessed by the steamship line, can add another $100 to $300 per day after the free time window expires. A warehouse that devans containers within 24 hours of delivery avoids most of these charges. Facilities like MeisterPrep, which handle high volumes of inbound ocean containers at their Long Beach and other warehouse locations, schedule devanning crews to turn containers quickly, keeping chassis and per diem costs under control for their clients.