Glossary > #Transport Container

Transport Container

Transport container is a fundamental building block of modern logistics and global trade. It is a robust, standardized steel shipping box that enables efficient, safe, and repeated use for storage and transportation of goods. Thanks to precise standardization of dimensions and construction, containers can be easily moved between ships, trains, and trucks without changing the contents, which is the basis of so-called intermodal transport. This system has enabled global supply chains, shortened shipping times, and reduced costs.

Main Purpose and Benefits

Goods Protection: Container protects cargo from damage, weather, and theft throughout the journey. Once loaded, the doors are closed, locked, and sealed – they are only opened at the recipient’s location.
Standardization: Enables global compatibility across all types of transport and significantly simplifies handling in warehouses and ports.
Efficiency: Minimizes manual handling, accelerates processes, and reduces the risk of loss or damage to goods.
Security: Due to sealing and robust construction, the contents are protected against unauthorized handling.

Detailed Characteristics and Construction

The success of containerization is conditioned by strict standardization and innovative construction that guarantees robustness, long lifespan, and easy handling.

Standardization: ISO Standards and Dimensions

ISO 668: Establishes external and some internal dimensions of containers. Ensures global compatibility.
ISO 1161: Defines precise parameters of corner castings, which enable safe stacking and handling.
ISO 6346: Determines the system of marking and identification of containers.
ISO 1496: Specifies requirements for container construction and testing.

Basic Dimensional Categories – Transport Container Dimensions

Container Type	Length (external)	Width	Height	Capacity (m³)	Note
20′ Standard (TEU)	6,058 mm	2,438 mm	2,591 mm	approx. 33.2	Basic unit
40′ Standard (FEU)	12,192 mm	2,438 mm	2,591 mm	approx. 67.7	Most common for bulky cargo
40′ High Cube	12,192 mm	2,438 mm	2,896 mm	approx. 76.4	Higher by 305 mm, for light bulky cargo
20′ High Cube	6,058 mm	2,438 mm	2,896 mm	approx. 37.4	Less common

TEU – Twenty-foot Equivalent Unit: basic unit of measurement in container transport.
FEU – Forty-foot Equivalent Unit: corresponds to two TEU.

Transport container dimensions
Rozměry transportního kontejneru

Variability of Dimensions and Weights

Standards allow manufacturers minor deviations (max. ±1 cm on external dimensions).
Weight of empty container (Tare weight) and maximum load capacity (Max load) may differ among various manufacturers.
Maximum permitted total weight (Maximum Gross Weight, MGW) is the sum of the weight of the empty container and cargo.

Construction and Materials

Corpus: Most often made of weather-resistant steel type COR-TEN (Corten), which naturally creates a protective rust layer and minimizes the need for maintenance.
Floor: Made of durable plywood (usually tropical wood), approximately 28 mm thick, impregnated against pests.
Walls: Corrugated steel sheet for increased strength and resistance to deformation.
Corner Castings: Massive steel elements with precisely defined holes for handling and stacking. Enable the use of twistlocks.
Doors: Double-leaf, with the ability to open to an angle of up to 270°, equipped with robust locks, bars, and rubber sealing.
Security Seal: One-time sealing of doors with a unique number to prove integrity during transport.

Identification and Marking

Each container has a unique identification number according to ISO 6346 (e.g., HZKU 305438 3).
First three characters: owner/operator, fourth character (U/J/Z): type of equipment.
Subsequent digits: serial number and check digit.

Types of Transport Containers

Transport containers can be divided according to purpose and structural design:

Overview of Main Types

Container Type	Use	Key Features
Dry Van (DV)	Versatile, dry cargo	Most common, closed corpus
High Cube (HC)	Light and bulky cargo	Higher by 305 mm, larger volume
Reefer	Chilled and frozen goods	Integrated cooling/freezing unit
Open Top (OT)	Oversized goods, bulk materials	Removable roof (tarpaulin)
Flat Rack (FR)	Heavy and large pieces	Floor and front walls only
Tanktainer	Liquids, gases, powders	Tank in steel frame
Platform/Bolster	Very large/heavy cargo	Reinforced floor, no walls
Ventilated	Goods sensitive to moisture (coffee, cocoa)	Ventilation openings in walls

Other Specialized Variants

Insulated: Insulated container for temperature-sensitive goods.
Double Door: Doors on both ends for quick loading/unloading.
Side Door: Doors along the entire length of the side wall.

Role of Container in Global Supply Chain

Transport container is the backbone of modern supply chain. The transport process is divided into several phases:

Order and Reservation: Manufacturer contacts a freight forwarder, who provides an empty container.
Loading and Sealing: Goods are loaded, doors locked, and sealed.
Inland Transport: Container travels by truck or train to the port.
Port Handling: Gantry cranes move the container to stacking areas.
Sea Transport: Ship transports containers thousands of kilometers.
Unloading and Customs Clearance: Unloading, customs inspection, and possible physical inspection.
Delivery to Recipient: Distribution by road or rail to the destination.
Emptying and Return: Empty container is returned to the depot for further use.

Intermodality

Main Advantage: Ability to transition between ship, train, and truck without changing contents.
Efficiency: Minimizes transshipment, lower risk of damage.

Modern Trends: Smart Containers and Digitalization

Smart Containers

Sensor Integration: Measurement of location (GPS), temperature, humidity, vibrations, door opening.
Online Monitoring: Direct control of shipment status in real time.
Benefits:
- Immediate detection of cooling system failure or unauthorized opening.
- Precise localization in case of delay or loss.
- Higher security for expensive or sensitive goods.
Supply Chain Digitalization: Better planning, predictive maintenance, automation of customs and logistics processes.
Major Companies: Maersk, CMA CGM, Hapag Lloyd are implementing “smart container” systems on a global scale.

Advantages and Disadvantages of Containerization

Advantages

Enormous Efficiency and Economies of Scale: Ships transporting tens of thousands of TEU.
Security and Goods Protection: Sealed container minimizes theft and damage.
Speed of Port Handling: Loading/unloading within hours.
Flexibility: Wide range of container types for various commodities.
Intermodality: One package – multiple types of transport.

Disadvantages

High Investment Costs: Construction of ships, terminals, acquisition of containers.
Empty Container Logistics: Uneven trade flows mean the need for repositioning of empty containers, which increases costs.
Environmental Impact: Large ships produce significant amounts of CO₂ emissions. The industry is seeking more environmentally friendly fuels and technologies.
Logistical Complexity: Coordination of dozens of entities, hundreds of documents – need for digitalization (TMS systems).
Risk of Loss at Sea: Despite robust stacking, losses occasionally occur during extreme weather.

Ecology and Sustainability in Container Transport

New Trends: Investment in more environmentally friendly propulsion (LNG, biofuels, electric drives).
Container Recycling: Increasingly used for other purposes (warehouses, modules for housing).
Smart Containers: More efficient monitoring reduces waste and risk of cargo devaluation.
Circular Economy: Repairs, recycling, and refurbishment of old containers.

Related Terms

Intermodal Transport: Combination of multiple types of transport without cargo transshipment.
Freight Forwarder: Transport organizer, arranges reservations, documentation, and transport.
Bill of Lading (B/L): Legal document of goods receipt, transport contract, and proof of ownership.
Demurrage/Detention: Contractual penalties for extended use of container in or outside the port.
Depot: Storage location for empty containers.

Transport container is not only a technical marvel, but also a key element of globalization that has enabled unprecedented growth in world trade. Its standardization, robustness, variability, and possibility of digitalization make it the backbone of modern logistics. Development continues toward greater efficiency, sustainability, and transparency, particularly through smart technologies and interest in ecology.

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