Loading a shipping container is not something to improvise. Poor weight distribution, weak securing, or inadequate moisture protection can damage cargo, delay customs clearance, or even compromise transport safety. Whether you're shipping wholesale goods, personal effects, vehicles, or bales of used clothing, the same basic principles apply.
This guide covers the essential steps to load a shipping container correctly: preparation, load planning, weight distribution, securing, and mistakes to avoid. The goal is simple: your cargo should arrive at destination in the same condition it left Montreal.
Whether you load the container yourself or leave it to a freight forwarder, understanding these principles helps you ask the right questions and confirm the job is done properly.
Why loading is a critical step
A shipping container passes through several environments before reaching its destination: handling at the port of loading, ocean transport subject to rolling and pitching, possible transshipments, and handling at the port of arrival. At every stage, cargo is exposed to forces that can shift it if it isn't properly secured.
Poor loading can lead to:
- Damaged or broken goods on arrival.
- Container imbalance affecting handling.
- Delays if the container needs to be reopened for inspection or re-securing.
- Increased risk to workers during unloading.
Good loading, on the other hand, protects cargo, eases customs clearance, and reduces the risk of cargo insurance disputes.
Preparing before the container arrives
Before the container even arrives for loading, it helps to prepare:
- A complete inventory of what will be loaded, with quantities and approximate dimensions.
- A total volume calculation in cubic meters, to confirm everything fits the chosen container size.
- Sorting cargo by type, weight, and fragility.
- Securing materials: straps, wooden blocks, stretch wrap, pallets, air bags if needed.
- Documentation related to the cargo, especially for commercial shipments or vehicles.
To estimate available volume, it helps to know the differences between container sizes. Our article on choosing between a 20ft, 40ft, and 40ft High Cube container breaks down the capacity of each option.
The load plan
A load plan means deciding, before you start, where each type of cargo will go inside the container. This plan takes into account three main factors: weight, volume, and the order of unloading at destination.
Distribute weight evenly
Weight should be spread as evenly as possible across the length and width of the container floor. Concentrating a heavy load in one spot can:
- Create excessive stress on the floor.
- Unbalance the container during crane or forklift handling.
- Increase the risk of damage to the floor or walls.
As a general rule, the heaviest items go in the center and toward the bottom, while lighter items go on top or toward the ends, never exceeding the allowed weight limit for the container size used.
Consider the unloading order
If some goods need to be delivered or cleared separately at arrival, it's best to place them near the container doors, loaded last, to avoid having to move the entire contents during unloading.
Separate incompatible cargo
Some products should not be loaded together, whether due to odor, moisture, or cross-contamination risks (for example, textiles and moisture-releasing goods). Proper separation, with temporary partitions or sufficient spacing, reduces these risks.
Securing cargo: keeping it in place
Securing is the set of techniques used to prevent cargo from shifting during transport. A well-loaded but poorly secured container is still vulnerable.
Common techniques include:
- Blocking: filling empty spaces with wooden blocks, empty pallets, or padding to prevent movement.
- Strapping: using lashing straps attached to the container's anchor points to stabilize stacked loads.
- Palletizing: grouping goods on wrapped pallets, which are more stable and easier to handle.
- Vertical bracing: preventing stacks of boxes or crates from tipping by bracing them laterally.
For vehicles loaded into a container, securing follows specific rules related to the vehicle's anchor points and available space. Our article on loading multiple cars into a container covers this method in detail.
Protecting cargo from moisture
Moisture is one of the most common causes of damage during ocean transport. Temperature variations between the origin, the voyage, and the destination port can create condensation inside the container, sometimes called "container rain."
To limit this risk:
- Use moisture absorbers sized for the container.
- Avoid loading damp or insufficiently dried goods.
- Use plastic wrap or protective covers for sensitive items.
- Air out and inspect wooden pallets to avoid residual moisture.
This is especially important for bales of used clothing, electronics, and wood or fabric furniture.
Documents to prepare around loading
Loading a container is usually accompanied by essential documents: packing list, commercial invoice where applicable, and confirmation of the container's verified gross mass. Our article on essential ocean shipping documents covers this list in detail.
Since international rules on verified gross mass came into effect, every loaded container must have its weight declared before loading. See our dedicated article on verified gross mass (VGM) to understand this process.
Summary table: good practices vs common mistakes
| Good practice | Common mistake |
|---|---|
| Distribute weight evenly across the floor | Concentrating heavy loads on one side |
| Secure each section with straps or blocks | Leaving empty spaces unblocked |
| Use moisture absorbers | Loading goods that are still damp |
| Place heavy loads at the bottom | Stacking heavy loads on top of fragile ones |
| Plan for the destination unloading order | Loading with no plan, item by item |
| Check the container's weight limit | Exceeding the allowed loading capacity |
Mistakes to avoid
- Overloading one side of the container: this unbalances the weight and complicates handling.
- Skipping the volume calculation: a wrong CBM calculation can lead to booking the wrong container size. See our guide to calculating shipment volume (CBM).
- Forgetting to secure the last items near the doors: cargo loaded last also needs to be well braced, or it can shift when the doors open.
- Ignoring cargo compatibility: some products should never be loaded together.
- Not documenting the loading: photos of the finished load can be useful in case of an insurance claim.
How VELOX supports you
VELOX Logistics supports exporters, businesses, and individuals preparing shipments to Africa, whether in a full container load (FCL) or through our ocean consolidation program. Our team advises on load planning, securing, and required documentation depending on the cargo type, whether it's wholesale goods, vehicles, or bales of used clothing.
With our own fleet of trucks and trailers, we also handle local trucking to the loading point, in the Saint-Léonard area and beyond.
Special cases: mixed containers and consolidation
When a container is shared between multiple shippers, as with ocean consolidation, loading requires extra coordination. Each shipment must be clearly identified, physically separated from others, and positioned according to the planned unloading order at destination.
In this context, the team coordinating the loading plays a key role: they must ensure total weight stays balanced even when shipments come from different clients, and that each shipment remains easy to identify during customs clearance. This is also why documenting each shipment with a separate packing list makes tracking at arrival much easier.
Adapting the load to the type of cargo
Loading a container looks different depending on the nature of the goods being shipped:
- Palletized wholesale goods: favor stable stacking, with pallets of similar dimensions where possible, and vertical bracing to prevent tipping.
- Bales of used clothing: compressed bales are usually stacked in columns, with lateral bracing to prevent shifting during the voyage.
- Vehicles: each vehicle must be immobilized with straps attached to recommended anchor points, parking brake engaged and gear in park where applicable.
- Personal effects and furniture: individual wrapping, filling empty spaces, and impact protection are essential, especially for fragile or sentimental items.
- Barrels and drums: barrels must be firmly braced upright, with appropriate chocks to prevent rolling.
This adaptation of loading methods to the type of cargo is one of the reasons it helps to work with an experienced team, able to adjust the approach for each shipment rather than applying a single standard method.
Final checks before sealing the container
Before sealing the container, it's recommended to do a final check:
- Confirm nothing protrudes or blocks the doors from closing.
- Verify that securing is properly fixed and nothing can shift freely.
- Make sure loading documents (packing list, VGM) match the actual contents.
- Take photos of the completed load, useful in case of a future claim.
- Apply the security seal and record its number, which must match the number on the transport documents.
These simple checks help avoid most problems encountered at unloading, whether damaged cargo or documents inconsistent with the container's actual contents.
Our team handles this stage directly: see container loading in Montreal for how the service works from Montreal.
FAQ
Who should load the container, me or the freight forwarder?
It depends on the service chosen. Some clients load their own cargo before pickup, while others leave the entire process to their freight forwarder. Contact VELOX Logistics to learn about the options available for your shipment.
Can different types of goods be mixed in the same container?
Yes, as long as the products are compatible and properly separated. This is the principle behind ocean consolidation, which lets multiple shippers share the same container.
How do I know if my container is overloaded?
Each container size has an allowed weight limit. Total weight, including the container's tare weight, must be declared through the VGM before loading. See our article on VGM.
What if I don't have enough cargo to fill a full container?
Consolidation lets you ship a partial volume without booking a full container. See our article on how ocean consolidation works.
Do I need special equipment to secure cargo?
Basic equipment includes straps, wooden blocks, stretch wrap, and sometimes bracing cushions. The type of equipment depends on the nature of the cargo being shipped.
How do I protect furniture or appliances during loading?
Protective packaging, palletizing, and careful securing reduce the risk of damage. See our guides on shipping furniture and appliances to Africa.
Can poor loading delay my shipment?
Yes. A poorly secured container can be rejected at the port or require re-securing before loading, which adds delays.
Who is responsible if damage is caused by poor securing?
Responsibility depends on the circumstances and the transport contract. Suitable marine cargo insurance helps protect against these risks.
A well-planned load protects your cargo and eases every step of ocean transport, from departure in Montreal to arrival at destination. To get support preparing your container, contact VELOX Logistics or book your ocean container today.
