Marking of shipping containers
The labeling of shipping containers plays a key role in global logistics. Knowledge of the meaning of individual labels such as MAX. GR, TARE, NET / PAYLOAD, CU. CAP. and prefixes is essential for the efficient and safe handling of containers. This information helps carriers, warehouse workers, and others in logistics ensure that each container is loaded, transported, and unloaded correctly.
Shipping containers play a key role in global freight transport. To ensure their efficiency and safety, proper labeling of each container is crucial. Container labeling provides important information that aids in handling, storage, and transport. In this article, we will look at the most common labels for shipping containers and what they mean.
MAX. GR = Maximum Gross Weight
One of the most important pieces of information on a shipping container is the label MAX. GR or Maximum Gross Weight. This label indicates the maximum weight of the container, including its cargo. It is the total weight that the container can safely transport. For example, a 20-foot High Cube container can have a maximum load of up to 30,480 kg. This figure may vary depending on the manufacturer and type of container, but generally, the maximum weight remains similar across different container sizes.
TARE = Weight of the empty container
The label TARE represents the weight of the empty container. This value is important for calculating the total weight when loading cargo. For example, an empty 20-foot container may weigh around 2040 kg. The weight of the empty container can vary depending on the manufacturer and specific model, but it always provides a clear idea of the container's base weight without cargo.
NET / PAYLOAD = Maximum weight of cargo
NET or PAYLOAD indicates the maximum weight of the cargo that can be loaded into the container. This figure is critical for carriers who need to know how much goods they can safely load. For instance, if a container has a maximum gross weight of 30,480 kg and its empty weight is 2040 kg, the maximum weight of cargo will be 28,440 kg. Knowing exactly how much cargo can be loaded is essential for efficient and safe transport.
CU. CAP. = Capacity in cubic meters
The label CU. CAP. or Cubic Capacity indicates the capacity of the container in cubic meters. This figure informs about the internal volume of the container and is important when planning loading, especially with bulky or lightweight cargo. For example, a 20-foot container may have a capacity of around 33 cubic meters, while a 40-foot container can offer up to 67 cubic meters. A larger container provides more internal space, which is beneficial for storing light but voluminous goods.
Container prefixes
Each shipping container also has a unique identification code that begins with a so-called prefix. This code consists of four letters that denote the owner or operator of the container. For example, the prefix HZKU may designate containers belonging to HZ CONTAINERS LLC. This identification system is standardized according to international ISO standards, making it easier to track and identify containers worldwide.
Additional labels and symbols
In addition to the aforementioned labels, containers may carry additional information and symbols. This information may include:
- IMDG Code: Code for the transport of hazardous materials.
- CSC Plate: Certification label that confirms that the container meets international safety standards.
- ISO Code: Code that specifies the type and dimensions of the container.
These additional labels provide further information that is important for the safe and effective handling and transport of containers.