Sea freight is most cost-effective when cost matters more than transit time

Sea freight remains the backbone of world merchandise trade. According to UNCTAD, more than 80% of international merchandise trade by volume is carried by sea.

The scale of sea freight comes primarily from the ability to carry very large quantities of goods over long distances. Containerisation also allows much of the process to be standardised - from loading at the origin port to transhipment and onward road transport.

Sea transit time depends on the port of origin and destination, the specific service, the number of transhipments and the situation on a given route. Standard FCL transit time from the main Chinese ports (Shanghai, Ningbo, Guangzhou) to Gdynia is 45-60 days. LCL can be 3-7 days longer due to consolidation.

Add to that the time needed for cargo preparation, delivery to the port, customs clearance, port handling and onward transport after the container leaves the destination port.

Air freight can be many times more expensive than sea, especially for larger and heavier shipments.

The cost depends on, among other things:

• the type of cargo,
• its weight and volume,
• the number of pallets or containers,
• the origin and destination ports,
• current freight rates,
• transport terms,
• port costs and additional services,
• road transport before and after the sea leg.

That is why comparing sea and air freight means comparing the total cost of delivery, not just the freight price itself.

The ocean freight rate is only one element of transport cost. For a specific shipment, the costs of cargo collection, delivery to the port, port handling, documentation, customs clearance, transhipments and delivery to the destination also matter.

That is exactly why preparing a quote is not enough to answer the question: "how much does a container cost?". You also need to establish:

• what is being shipped,
• from where and to where,
• what the delivery deadline is,
• the dimensions and weight of the cargo,
• whether the cargo fits a standard container,
• who is responsible for each stage of transport,
• whether additional services are needed.

FCL (Full Container Load) means transporting cargo in a container dedicated to a single shipment.

This does not mean the container has to be physically filled to the brim. FCL can also be justified when the priority is limiting the number of transhipments, better control over the cargo or the organisational requirements of a specific delivery.

When choosing FCL, the volume and nature of the cargo, its susceptibility to damage, the packing method and the required delivery model are taken into account. Service details: FCL - full container load.

LCL (Less than Container Load) is the solution for shipments that do not require a whole container. The cargo is consolidated with shipments from other shippers.

Thanks to this, a business does not have to pay for an entire container when its own cargo occupies only part of it. LCL does however involve additional consolidation and deconsolidation operations. Service details: LCL - groupage.

In practice you cannot point to a single number of pallets, cubic metres or kilograms at which every shipment should automatically switch from LCL to FCL. Rates change depending on direction, ports, current market conditions and additional costs.

OOG (Out of Gauge) covers cargo whose dimensions or loading method exceed the capabilities of a standard container - including large machinery, structural elements and industrial equipment.

In that case, planning must already take into account:

• exact dimensions and weight of the cargo,
• the lifting and securing method,
• the possibility of loading onto a specific unit type,
• port requirements,
• the road route before and after sea transport,
• available handling equipment.

Service details: Project Cargo / OOG.

In sea transport, the way cargo is packed affects the ability to use container space, the method of securing it and the course of later handling operations. For non-standard cargo, the packing method should be considered already during transport planning. Service details: Container Packing.

Sea freight rarely ends at the port. In most cases the container must be collected from the port and delivered to a warehouse, production plant or another destination.

From the business's perspective, what matters is therefore not the sea leg alone, but the entire course of delivery.

When importing from outside the European Union, sea freight is often accompanied by customs and documentation formalities. Their scope depends on the type of goods, country of origin, shipment value and trade terms.

Errors in documentation or missing required data can affect clearance time and consequently the delivery date. Service details: Customs clearance.

The price of sea freight is not fixed. Freight levels are influenced by demand for transport, space availability on vessels, fuel prices, the situation in ports, corridor capacity and geopolitical disruption. Fluctuations of several hundred or even a thousand dollars per container within a single week are not unusual in 2026.

Sea transport is predictable in terms of regular scheduled services, but this does not mean every vessel arrives at port exactly in line with the original schedule.

According to Sea-Intelligence, global schedule reliability in June 2026 was 62.6%, and the average delay of delayed vessels was 5.31 days.

In practice, multimodal transport combining several modes within a single delivery can also be the answer.

Sea freight has particular significance for businesses using Polish ports. In 2025 the Port of Gdynia exceeded 1 million TEU of container transhipments for the first time.

For companies located in Pomerania, access to the Port of Gdynia can be an important element in organising imports and exports, especially when sea freight is part of a regular supply chain.

For a business located in Poland, the port is neither the end nor the beginning of the whole process. What matters is connecting sea freight with delivery to the port and onward delivery to the destination.

Transport organisation can cover sea, road, rail or air transport - allowing the solution to be matched to the specific cargo and required route, including OOG transport and project solutions for non-standard cargo.

A transport quote should start with information about the specific shipment. What matters includes:

1. type of goods,
2. weight and volume,
3. number of pallets or loading units,
4. dimensions,
5. place of collection,
6. place of delivery,
7. required deadline,
8. packing method,
9. possibility of using a standard container,
10. customs clearance and documentation requirements.

Only on that basis can FCL, LCL, OOG and other transport variants be compared.

Sea freight remains one of the most important ways of moving goods worldwide. Its greatest advantage is the ability to transport large volumes over long distances at a relatively low unit cost. That does not mean it is the best solution for every shipment.

The choice should be decided primarily by: the parameters and nature of the cargo, the direction of transport, the required delivery date, the total cost of execution, the packing and handling method, customs clearance requirements and the possibility of combining sea freight with other modes of transport.