Term: dunnage
dunnage (noun): loose materials used to support and protect cargo during shipping and storage. It prevents movement, provides cushioning, and keeps goods away from moisture or the floor.+1
synonyms: padding, bracing, packing, shims.
pronunciation: /ˈdʌn.ɪdʒ/
translation: stivējuma materiāli, pakšas, starplikas
example: The crew used heavy timber dunnage to secure the steel coils and prevent them from shifting during the sea voyage.
Primary Functions
In logistics, construction, and the military (such as in an AHA), dunnage serves three main purposes:
- Stability: Filling empty spaces (voids) between items so they don’t slide when a truck brakes or a ship rolls.
- Protection: Acting as a buffer to prevent crates or machinery from scratching or denting each other.
- Moisture Control: Lifting cargo off the floor of a container or the ground to prevent water damage and allow for ventilation.
Common Types of Dunnage
The material used depends on the weight of the cargo and the mode of transport.
| Material | Description | Common Use |
| Timber/Lumber | Solid wood beams or planks. | Bracing heavy machinery or steel pipes in ships. |
| Inflatable Air Bags | Heavy-duty plastic bags filled with air. | Filling “voids” in shipping containers to keep pallets steady. |
| Corrugated Paper | Layered cardboard or paper sheets. | Light protection for electronics or fragile consumer goods. |
| Foam/Plastic | Custom-molded inserts. | High-end protection for sensitive instruments. |
In Military & Construction Contexts
As mentioned in the context of an AHA (Ammunition Holding Area), dunnage is critical for safety:
- Separation: It ensures that ammunition crates are not in direct contact with the soil, preventing rot in wooden crates or rust in metal ones.
- Airflow: It allows air to circulate under the stacks, which helps maintain a stable temperature for the explosives inside.
“Dunnage” in Modern Travel
In recent years, the term has also been used in the airline industry to describe “hidden” weight or the materials used to balance an aircraft’s center of gravity.