Containerisation for CONCOR MT 2026
Containerisation for CONCOR MT 2026
CONCOR Management Trainee (Commercial & Operations) 2026 | Professional Knowledge | Topic 9 of 29
Containerisation is one of the most important developments in modern logistics, railway freight, maritime transportation and international trade. It allows goods to move between trucks, trains, ships and terminals using standardized containers, often without unpacking the individual packages at each transfer point.
For candidates preparing for the CONCOR Management Trainee 2026 examination, Containerisation is especially important because Container Corporation of India Limited operates in container freight transportation and related logistics services.
Imagine that an exporter in Uttar Pradesh wants to send 20 tonnes of manufactured products to a customer in Europe. Instead of repeatedly unloading and repacking the individual goods, the cargo can be packed into a suitable freight container and moved through road, rail and maritime transportation.
This chapter explains Containerisation, its advantages, container types, ISO standards, ISO 6346 identification numbers, container dimensions, CSC safety plates, cargo loading, TEU/FEU calculations, safety concepts and 25 original practice MCQs.
1. What Is Containerisation?
Containerisation is the practice of transporting goods in standardized, reusable freight containers designed for efficient handling and transfer between compatible transport modes.
The containers can be carried by trucks, freight trains and ships using suitable equipment and infrastructure.
Simple Example
A manufacturer needs to export packaged machinery.
The process may include:
- Packing the machinery into a suitable freight container.
- Securing the cargo inside the container.
- Closing the doors and applying an appropriate seal.
- Transporting the container by truck to a rail terminal.
- Loading the container onto a railway wagon.
- Moving it by train to a port.
- Loading it onto a container vessel.
- Arranging delivery at the destination.
The container can remain the same during the transport-mode transfers, although inspections or other circumstances may require it to be opened.
Important Exam Point: Containerisation reduces the need for repeated handling of individual cargo packages during transportation.
2. Objectives of Containerisation
A. Standardize Freight Handling
Standardized containers allow compatible transport equipment and terminals to handle different shipments efficiently.
B. Reduce Cargo Damage
Containers protect many types of goods against weather exposure, repeated handling and some other risks.
C. Improve Transportation Efficiency
Containers can be transferred between compatible vehicles and terminals using dedicated handling equipment.
D. Support Multimodal Logistics
Containerisation makes integrated road, rail and sea transportation easier.
E. Improve Cargo Security
Sealed containers can support shipment integrity and security procedures.
F. Improve Terminal Productivity
Standardized units simplify many lifting, stacking and transfer operations.
G. Improve Supply Chain Connectivity
Container networks connect inland industrial regions with ports and international markets.
Exam Shortcut: Remember Standardization, Safety, Speed, Security and Multimodal Connectivity.
3. History of Containerisation
Modern intermodal containerisation developed significantly during the twentieth century.
Malcolm McLean is widely associated with pioneering modern commercial container shipping in the 1950s.
In 1956, a converted tanker named Ideal X carried truck trailers and detachable cargo units on a voyage from Newark to Houston, demonstrating an important development in containerized transportation.
Subsequent standardization helped establish containers as a major element of international freight transportation.
Why Standardisation Was Important
Before common standards, different container designs could create compatibility problems between ships, cranes, trains and road vehicles.
International standards helped provide consistent container dimensions, fittings and identification procedures.
Exam Point: Malcolm McLean is widely recognized as a key pioneer of modern containerisation.
4. Important Parts of a Freight Container
A typical general-purpose freight container includes several structural components.
Corner Castings
Structural fittings located at the container corners, supporting lifting, securing and connection to compatible equipment.
Corner Posts
Vertical structural members forming part of the container's load-bearing framework.
Side Walls
Panels enclosing the sides of a container.
Roof Panel
The upper enclosure of a standard closed container.
Floor
The surface that supports cargo, subject to applicable loading limitations.
Container Doors
Provide access for loading and unloading cargo.
Door Locking Bars
Help secure the container doors in their closed position.
Door Gaskets
Help prevent water and dust entering under normal service conditions.
Forklift Pockets
Present on some container types and designs, allowing compatible forklift handling under specified conditions.
CSC Safety Approval Plate
A safety identification plate affixed to relevant approved freight containers.
Exam Point: Corner castings are essential components for container lifting, securing and stacking arrangements.
5. Types of Freight Containers
Different cargo types require different container designs.
5.1 Dry Storage Container
A Dry Storage Container, also called a General-Purpose Container, is commonly used for ordinary packaged cargo.
Suitable Cargo:
- Garments
- Electronics
- Packaged machinery
- Household goods
- General merchandise
Features:
- Enclosed structure
- Weather-resistant design
- Standardized handling fittings
- Common availability in 20-foot and 40-foot lengths
5.2 High Cube Container
A High Cube Container provides greater internal height than a comparable standard-height container.
A common 40-foot High Cube container has an external height of approximately 9 feet 6 inches.
Suitable Cargo: Relatively bulky or voluminous goods that fit within the applicable payload and loading restrictions.
Exam Point: High Cube containers primarily provide additional height and usable cubic volume, not automatically a higher permitted cargo weight.
5.3 Refrigerated Container (Reefer)
A Reefer Container is designed for cargo requiring controlled temperature conditions.
Examples:
- Certain pharmaceutical products
- Frozen foods
- Fresh produce
- Temperature-sensitive chemicals
Reefer containers may require electrical connections or other suitable power arrangements during transportation and storage.
5.4 Open-Top Container
An Open-Top Container has a removable or flexible top covering, facilitating loading from above.
Examples:
- Tall machinery
- Specialized industrial equipment
- Cargo requiring overhead crane loading
The cargo and its dimensions must remain within the applicable transport and securing requirements.
5.5 Flat-Rack Container
A Flat-Rack Container has a strong floor structure and end frames, with little or no permanent side-wall enclosure.
Examples:
- Large machinery
- Industrial components
- Certain oversized equipment
Flat-racks are often used for out-of-gauge cargo.
5.6 Tank Container
A Tank Container consists of a tank mounted within a frame designed for containerized transport.
It is used for suitable bulk liquids, gases and other permitted commodities, depending on certification and design.
Examples:
- Edible oils
- Certain chemicals
- Approved liquid products
5.7 Ventilated Container
A Ventilated Container provides ventilation arrangements for cargo that benefits from controlled air exchange.
It may be used for particular commodities such as selected agricultural products.
5.8 Insulated Container
An Insulated Container uses insulating materials to reduce the rate of heat transfer.
Insulation alone does not necessarily provide active refrigeration.
Container Types – Quick Comparison
| Container Type | Main Feature | Typical Cargo |
|---|---|---|
| Dry | Enclosed general-purpose unit | Packaged merchandise |
| High Cube | Additional height | Voluminous goods |
| Reefer | Temperature control | Perishables and selected pharmaceuticals |
| Open-Top | Top-loading access | Tall machinery |
| Flat-Rack | Open-sided cargo support | Oversized equipment |
| Tank | Tank within container frame | Suitable liquids and gases |
| Ventilated | Air ventilation | Selected agricultural cargo |
| Insulated | Reduced heat transfer | Suitable temperature-sensitive cargo |
6. Standard Container Dimensions
The dimensional classification of standard Series 1 freight containers is governed by ISO 668.
Common External Dimensions
| Container | Length | Width | Height |
|---|---|---|---|
| Standard 20-foot | 6.058 m | 2.438 m | 2.591 m |
| Standard 40-foot | 12.192 m | 2.438 m | 2.591 m |
| 40-foot High Cube | 12.192 m | 2.438 m | 2.896 m |
Values are nominal external ISO dimensions. Internal dimensions, door openings, tare mass and payload ratings depend on container design.
Important Differences
- 20-foot Container: Shorter container commonly used for dense or general cargo.
- 40-foot Container: Longer container providing greater volume.
- 40-foot High Cube: Similar nominal length and width to a standard 40-foot unit but with approximately 305 mm of additional external height.
Exam Tip
- Standard Height = 8 feet 6 inches.
- High Cube Height = 9 feet 6 inches.
The two height values differ by one foot.
7. TEU and FEU
Container capacity is commonly measured using TEU.
TEU
TEU = Twenty-foot Equivalent Unit
- One standard 20-foot container = 1 TEU.
- One standard 40-foot container = 2 TEU.
FEU
- FEU = Forty-foot Equivalent Unit
- One 40-foot equivalent unit = 2 TEU.
Numerical Example
A container train carries:
- 24 standard 20-foot containers.
- 18 standard 40-foot containers.
- Total TEU = (24 × 1) + (18 × 2) = 24 + 36
Answer = 60 TEU
Important Concept
TEU represents standardized container capacity.
It does not indicate the actual cargo weight.
A loaded 20-foot container and an empty 20-foot container each represent one TEU in a container-count calculation.
8. Difference Between TEU, FEU and Container Count
These three measures should not be confused.
Suppose a terminal handles:
- 20 twenty-foot containers.
- 10 forty-foot containers.
Total Physical Containers
20 + 10 = 30 containers
Total TEU
20 + (10 × 2) = 40 TEU
Forty-Foot Equivalent Units
40 TEU ÷ 2 = 20 FEU-equivalents
Exam Trap: Number of physical containers and TEU are not necessarily equal.
9. ISO Standards Related to Containerisation
ISO standards help ensure container compatibility and identification.
ISO 668
ISO 668 – Series 1 Freight Containers: Classification, Dimensions and Ratings
It covers container dimensional classifications and associated ratings.
ISO 6346
ISO 6346 – Freight Containers: Coding, Identification and Marking
It specifies container identification and associated markings.
ISO 1496
The ISO 1496 series covers specifications and testing requirements for various Series 1 freight container types.
ISO 1161
ISO 1161 addresses specifications for Series 1 freight container corner and intermediate fittings.
Important Difference
- ISO 668 = Dimensions and Ratings
- ISO 6346 = Identification and Marking
- ISO 1496 = Specifications and Testing
- ISO 1161 = Corner and Intermediate Fittings
These distinctions are important for technical objective questions.
10. ISO 6346 Container Identification Number
ISO 6346 establishes the internationally used container identification system.
A container identification number consists of:
- Owner Code – 3 letters.
- Equipment Category Identifier – 1 letter.
- Serial Number – 6 digits.
- Check Digit – 1 digit.
Illustrative Structure
ABCU 123456 [Check Digit]
Here, ABC is a placeholder owner code and the full sequence is not presented as a validated registered container number.
Component Breakdown
| Component | Characters | Meaning |
|---|---|---|
| Owner Code | 3 letters | Registered owner or principal operator prefix |
| Equipment Category | 1 letter | Equipment classification |
| Serial Number | 6 digits | Assigned equipment serial |
| Check Digit | 1 digit | Identification validation |
Equipment Category Identifiers
- U: Freight containers.
- J: Detachable freight container-related equipment.
- Z: Trailers and chassis.
Important Exam Point
The ISO 6346 identification number has 11 characters in total.
3 letters + 1 letter + 6 digits + 1 digit = 11 characters.
11. What Is a Container Check Digit?
The Check Digit is the final digit of the ISO 6346 identification number.
Its purpose is to help detect errors in recording or transmitting container identification numbers.
It is calculated using a defined mathematical method.
Why It Matters
Suppose a container number is typed incorrectly in a freight management system.
The calculated check digit can help identify certain data-entry errors.
Important Clarification
A valid check digit does not prove that a container physically exists, that its owner code is currently registered, or that the container is safe to transport.
It primarily supports identification accuracy.
12. Container Owner Code and BIC
BIC refers to the Bureau International des Containers.
It is associated with the international registration system for container owner identification codes.
Why Owner Codes Matter
Owner codes help identify the registered owner or principal operator associated with the equipment code.
Practical Uses
- Cargo documentation.
- Terminal records.
- Container tracking.
- Electronic Data Interchange.
- Fleet management.
- Container identification checks.
Exam Point: The owner code is three letters, while the equipment category identifier is the fourth letter.
13. Container Weight Terminology
Understanding container weight terminology is important for loading and safety questions.
Tare Weight
The weight of an empty container, including its permanent structure and equipment as defined by the applicable specification.
Payload
The weight of cargo that can be loaded within the relevant permitted limit.
Maximum Gross Mass
The maximum permitted total mass of the loaded container under its applicable rating.
Gross Mass
The actual total mass of the container together with its contents at a specified time.
Basic Formula
Gross Mass = Tare Mass + Cargo Mass
Payload Capacity Formula
Maximum Permissible Payload = Maximum Gross Mass − Tare Mass
Numerical Example
- Maximum Gross Mass = 30,480 kg.
- Tare Mass = 2,300 kg.
- Maximum Permissible Payload = 30,480 − 2,300.
Answer = 28,180 kg
The shipment must also comply with road, rail, vessel, axle-load, cargo-distribution and other applicable restrictions.
14. Verified Gross Mass (VGM)
Verified Gross Mass is an important container-shipping safety concept.
Under applicable SOLAS requirements, a shipper must provide the verified gross mass of a packed container before it is loaded onto a ship, subject to the relevant regulations.
Two General Verification Methods
Method 1: Weigh the packed container using suitable certified or calibrated equipment.
Method 2: Weigh all packages and cargo items, include applicable packing and securing material, and add the container tare mass using an approved method.
Important Difference
- Tare Weight = Empty container.
- Cargo Weight = Goods and applicable cargo-related materials.
- VGM = Verified gross mass of the packed container.
Exam Point: VGM is relevant to safe maritime loading and stowage.
15. International Convention for Safe Containers (CSC), 1972
The International Convention for Safe Containers, 1972 was developed to improve the safety of freight containers used in international transportation.
It establishes safety approval, examination and maintenance requirements for containers within its scope.
Main Objectives
- Improve container safety.
- Establish international safety requirements.
- Support the recognition of approved containers.
- Promote safe handling and transportation.
CSC Safety Approval Plate
A container covered by the relevant CSC approval provisions carries an approved safety plate containing prescribed technical information.
Information may include:
- Approval reference.
- Date of manufacture.
- Maximum operating gross mass.
- Relevant stacking and structural test information.
- Examination-related details or markings.
Important Concept
A CSC plate is related to container safety approval.
It is different from the ISO 6346 container identification number.
16. Container Inspection and ACEP
Container owners are responsible for maintaining approved containers in a safe condition under the applicable CSC requirements.
Periodic Examination Scheme
Under the CSC framework, the first examination of a new container must occur within five years from manufacture.
Subsequent examinations under the periodic scheme must occur at intervals not exceeding 30 months.
ACEP
ACEP = Approved Continuous Examination Programme
It is an alternative approved examination arrangement under which containers are inspected in accordance with the applicable continuous examination programme.
Key Differences
| Periodic Examination | ACEP |
|---|---|
| Examination at prescribed intervals | Approved continuous examination arrangement |
| Next examination marking used | ACEP identification marking used |
| First examination within five years for new containers | Examination according to approved programme |
| Subsequent interval not more than 30 months | Programme-based examinations, with applicable maximum intervals |
Exam Trap: ACEP does not mean containers are exempt from safety examinations.
17. Container Seals
Container seals help indicate whether the secured container door arrangement has been opened or interfered with.
Common Seal Types
- Bolt seals.
- Cable seals.
- Electronic seals, where used.
- Other approved mechanical security seals.
High-Security Seals
ISO 17712 specifies requirements associated with mechanical seals used for freight containers.
Important Concept
A seal does not physically guarantee that theft, tampering or cargo damage is impossible.
It is a component of a broader cargo security system.
Seal Number
A seal generally carries an identifying number that may be recorded in relevant shipping or logistics documents.
18. Container Stuffing and Destuffing
Stuffing
Stuffing is the loading of cargo into a freight container.
Destuffing
Destuffing is the removal of cargo from a freight container.
Important Stuffing Principles
- Use an appropriate container.
- Check container condition.
- Distribute cargo weight properly.
- Avoid overloading.
- Secure cargo against movement.
- Protect fragile goods.
- Observe applicable dangerous-goods requirements.
- Check the gross mass and relevant limits.
- Close and secure the doors correctly.
Why Weight Distribution Matters
Incorrect weight distribution can affect stability, handling safety and compliance with road, rail and maritime restrictions.
Exam Point: Stuffing means loading goods into a container; destuffing means removing them.
19. Container Handling Equipment
Container terminals use specialized equipment to move, load, unload and stack containers.
Reach Stacker
A mobile vehicle designed for lifting and stacking containers using a telescopic boom and spreader arrangement.
Rubber-Tyred Gantry Crane (RTG)
A gantry crane mounted on rubber tyres, commonly used in container yards.
Rail-Mounted Gantry Crane (RMG)
A gantry crane running on rails, used for suitable container handling operations.
Ship-to-Shore Crane (STS)
A port crane used for transferring containers between a vessel and the quay.
Straddle Carrier
A vehicle designed to lift and move containers within suitable terminal layouts.
Terminal Tractor
A tractor used for moving containers on suitable trailers within terminal operations.
Equipment Comparison
| Equipment | Main Application |
|---|---|
| Reach Stacker | Container lifting and stacking |
| RTG | Container yard handling |
| RMG | Rail-mounted yard or rail-terminal handling |
| STS Crane | Vessel-to-quay container transfer |
| Straddle Carrier | Container transport and handling within terminal |
| Terminal Tractor | Moving trailers within terminals |
20. Container Storage and Yard Operations
Container yards organize containers to support efficient retrieval, handling and transfer.
Container Stacking
Placing containers above one another using suitable equipment and approved stacking arrangements.
Yard Slot
A designated location for storing a container.
Container Dwell Time
Time spent by a container within a defined terminal or facility boundary.
Container Rehandling
An additional handling movement, often required when a container must be shifted to access another container.
Container Gate Operations
Activities involved when containers enter or leave a terminal.
Why Yard Planning Matters
Poor yard organization can cause:
- Longer retrieval times.
- Additional handling moves.
- Equipment congestion.
- Increased terminal costs.
- Shipment delays.
These issues will be covered in greater detail in the Container Terminal Operations chapter.
21. Containerisation in CONCOR Operations
Containerisation is fundamental to understanding CONCOR's role in India's freight and logistics network.
Rail-Based Container Transportation
Standardized containers can be transported using suitable railway wagons between rail-connected terminals.
Inland Container Depots
ICDs support container receipt, dispatch, storage and other authorized logistics functions.
Domestic Cargo Movement
Containers can support domestic freight distribution across inland routes.
EXIM Cargo Movement
Containerized cargo is used extensively in international export and import logistics.
Road–Rail Integration
A container may be transported by road to a terminal and then moved by rail toward its destination.
Illustrative Container Journey
Factory → Container Stuffing → Truck → Inland Container Depot → Container Train → Seaport → Cargo Vessel
This is an illustrative movement, not a statement that every shipment follows this sequence.
22. Containerisation vs Conventional Break-Bulk Cargo
Containerised Cargo
Cargo packed into standardized freight containers.
Conventional Break-Bulk Cargo
Cargo handled as individual packages or units, such as crates, bags, bundles or machinery, rather than moving entirely as standardized container units.
Comparison
| Containerisation | Conventional Break-Bulk |
|---|---|
| Uses standardized freight containers | Individual cargo units handled separately |
| Supports intermodal transfer | Often requires more cargo-specific handling |
| Can reduce repeated handling | May require additional handling |
| Suitable for many packaged goods | Useful for cargo not suited to conventional containers |
| Requires container-compatible infrastructure | Requires appropriate general cargo facilities |
Important: Containerisation is not suitable for every cargo type or every shipment. Cargo characteristics and total logistics costs determine suitability.
23. Benefits of Containerisation
Reduced Handling
Standardized units reduce the need to handle every individual package during mode transfers.
Better Cargo Protection
Suitable containers protect many goods from normal external exposure.
Improved Terminal Efficiency
Compatible handling equipment can transfer standardized units efficiently.
Supports International Trade
Container shipping connects suppliers and customers across countries.
Encourages Multimodal Operations
Containerised freight can move by suitable combinations of rail, road and sea.
Improved Shipment Visibility
Unique identification numbers support documentation and tracking.
Economies of Scale
Consolidation and standardized operations can reduce unit transport costs for appropriate movements.
24. Challenges and Limitations of Containerisation
Infrastructure Requirements
Terminals need suitable lifting equipment, yard space and compatible transport connections.
Empty Container Repositioning
Containers may need to be returned or repositioned to locations with cargo demand.
Cargo Suitability
Some cargo requires special containers or conventional handling.
Container Damage
Containers can suffer structural damage during loading, transport or handling.
Congestion
Terminal congestion can increase dwell time and operational costs.
Weight and Safety Compliance
Excessive cargo mass or improper securing can create serious risks.
Tracking and Documentation
Inaccurate container numbers or shipment data can lead to operational errors.
25. Important Containerisation Formulas
| Concept | Formula |
|---|---|
| Total TEU | Number of 20-ft units + 2 × Number of 40-ft units |
| FEU-equivalents | Total TEU ÷ 2 |
| Gross Mass | Tare Mass + Cargo Mass |
| Maximum Permissible Payload | Maximum Gross Mass − Tare Mass |
| Cost per TEU | Relevant Cost ÷ TEU |
| Container Utilization by Weight | Actual Cargo Mass ÷ Applicable Payload Capacity × 100 |
| On-Time Delivery Rate | On-Time Deliveries ÷ Total Deliveries × 100 |
| Handling Productivity | TEU Handled ÷ Handling Time |
| Damage Rate | Damaged Relevant Units ÷ Total Relevant Units × 100 |
For mixed container sizes beyond 20-foot and 40-foot units, use the applicable standardized TEU equivalence rather than blindly applying the simplified formula.
26. Solved Numerical Questions
Numerical 1: TEU Calculation
A terminal handles:
- 30 standard 20-foot containers.
- 20 standard 40-foot containers.
- Total TEU = 30 + (20 × 2).
Answer = 70 TEU
Numerical 2: Physical Container Count
A train carries:
- 18 standard 20-foot containers.
- 12 standard 40-foot containers.
- Number of physical containers = 18 + 12.
Answer = 30 containers
Numerical 3: Gross Mass
- Container Tare Mass = 2,400 kg.
- Cargo Mass = 20,000 kg.
- Gross Mass = 2,400 + 20,000.
Answer = 22,400 kg
Numerical 4: Maximum Payload
- Maximum Gross Mass = 30,480 kg.
- Tare Mass = 2,280 kg.
- Maximum Payload = 30,480 − 2,280.
Answer = 28,200 kg
Numerical 5: Weight Utilization
- Permitted Payload = 28 tonnes.
- Actual Cargo Load = 21 tonnes.
- Utilization = (21 ÷ 28) × 100.
Answer = 75%
Numerical 6: Cost per TEU
- Relevant Terminal Cost = ₹3,60,000.
- Containers Handled = 120 TEU.
- Cost per TEU = 3,60,000 ÷ 120.
Answer = ₹3,000 per TEU
Numerical 7: Terminal Handling Productivity
- A crane or handling operation processes 180 TEU over 6 hours.
- Productivity = 180 ÷ 6.
Answer = 30 TEU per hour
27. Quick Revision
- Containerisation uses standardized reusable freight containers.
- It supports road, rail and maritime freight integration.
- Malcolm McLean pioneered modern commercial containerisation.
- ISO 668 covers Series 1 container classification, dimensions and ratings.
- ISO 6346 covers freight container coding, identification and marking.
- ISO 1496 covers container specifications and testing.
- ISO 1161 covers corner and intermediate fittings.
- TEU stands for Twenty-foot Equivalent Unit.
- FEU stands for Forty-foot Equivalent Unit.
- A standard 20-foot container equals 1 TEU.
- A standard 40-foot container equals 2 TEU.
- A standard container's external height is commonly 8 ft 6 in.
- A High Cube container is commonly 9 ft 6 in high.
- ISO 6346 identification uses 11 characters.
- The owner code consists of three letters.
- U identifies freight containers.
- J identifies detachable container-related equipment.
- Z identifies trailers and chassis.
- The serial number consists of six digits.
- The check digit helps detect identification errors.
- CSC stands for International Convention for Safe Containers in the convention's name.
- The CSC Convention was adopted in 1972.
- ACEP means Approved Continuous Examination Programme.
- A new container's first CSC periodic examination is within five years.
- Later periodic examinations are at intervals not exceeding 30 months.
- Stuffing means loading cargo into a container.
- Destuffing means removing cargo from a container.
- Reefer containers carry temperature-controlled cargo.
- Reach stackers are used for container handling.
- CONCOR supports rail-based container transportation and related logistics services.
28. CONCOR MT 2026
These questions are original exam-oriented practice material, not verified official previous-year questions.
Q1. What is Containerisation?
B. Transporting goods using standardized freight containers
C. Eliminating cargo handling equipment
D. Transporting only liquid products
Correct Answer: B
Explanation: Containerisation uses standardized freight containers to support efficient transportation and cargo handling.
Q2. Who is widely associated with pioneering modern commercial containerisation?
B. Malcolm McLean
C. James Watt
D. Adam Smith
Correct Answer: B
Explanation: Malcolm McLean played a major role in developing modern commercial container shipping.
Q3. Which ISO standard primarily covers freight container identification and marking?
B. ISO 6346
C. ISO 14001
D. ISO 27001
Correct Answer: B
Explanation: ISO 6346 covers container coding, identification and marking.
Q4. Which ISO standard covers Series 1 container dimensions and ratings?
B. ISO 6346
C. ISO 17712
D. ISO 45001
Correct Answer: A
Explanation: ISO 668 deals with Series 1 freight container classification, dimensions and ratings.
Q5. What does TEU stand for?
B. Twenty-foot Equivalent Unit
C. Terminal Export Unit
D. Total Equipment Usage
Correct Answer: B
Explanation: TEU is a standardized measure of container capacity.
Q6. One standard 40-foot container is equivalent to:
B. 2 TEU
C. 3 TEU
D. 4 TEU
Correct Answer: B
Explanation: One standard 40-foot container represents 2 TEU.
Q7. A terminal handles 25 standard 20-foot and 15 standard 40-foot containers. Total TEU is:
B. 45
C. 55
D. 65
Correct Answer: C
Explanation: 25 + (15 × 2) = 55 TEU.
Q8. How many characters are present in a standard ISO 6346 container identification number?
B. 9
C. 10
D. 11
Correct Answer: D
Explanation: The number has four letters, six serial digits and one check digit.
Q9. In ISO 6346, the equipment category identifier U refers to:
B. Passenger coaches
C. Trailers only
D. Forklift trucks
Correct Answer: A
Explanation: U is assigned to freight containers.
Q10. In the ISO 6346 system, the owner code consists of:
B. Three letters
C. Four digits
D. Six digits
Correct Answer: B
Explanation: The owner code is formed by three capital letters.
Q11. What is the purpose of a container check digit?
B. Help detect identification recording errors
C. Show the shipping company's profit
D. Measure container temperature
Correct Answer: B
Explanation: The check digit helps validate the accuracy of a container identification number.
Q12. Which container is most suitable for cargo requiring controlled refrigeration?
B. Reefer Container
C. Flat-Rack Container
D. Open-Top Container
Correct Answer: B
Explanation: Reefer containers are designed for temperature-controlled cargo.
Q13. Which container type is particularly suitable for certain oversized machinery?
B. Standard Dry Container only
C. Insulated Container only
Correct Answer: A
Explanation: Flat-rack containers provide suitable structures for particular oversized cargo.
Q14. What is the common external height of a High Cube container?
B. 8 ft
C. 8 ft 6 in
D. 9 ft 6 in
Correct Answer: D
Explanation: A common High Cube external height is 9 feet 6 inches.
Q15. The International Convention for Safe Containers was adopted in:
B. 1972
C. 1989
D. 1993
Correct Answer: B
Explanation: The CSC Convention was adopted in 1972.
Q16. What does ACEP stand for?
B. Approved Continuous Examination Programme
C. Annual Cargo Examination Procedure
D. Advanced Container Equipment Plan
Correct Answer: B
Explanation: ACEP is an approved continuous container examination arrangement.
Q17. Under the CSC periodic examination scheme, the first examination of a new container must occur within:
B. 2 years
C. 5 years
D. 10 years
Correct Answer: C
Explanation: The first examination must occur within five years of manufacture.
Q18. Under the CSC periodic examination scheme, subsequent examinations must occur at intervals not exceeding:
B. 12 months
C. 24 months
D. 30 months
Correct Answer: D
Explanation: Subsequent periodic examinations must not exceed 30 months.
Q19. What does Stuffing mean in container logistics?
B. Removing cargo from a container
C. Repairing a locomotive
D. Issuing a railway ticket
Correct Answer: A
Explanation: Stuffing is the process of loading cargo into a container.
Q20. What does Destuffing mean?
B. Unloading cargo from a container
C. Calculating customs duty
Correct Answer: B
Explanation: Destuffing is the removal of goods from a container.
Q21. A container has a maximum gross mass of 30,480 kg and a tare mass of 2,480 kg. Its maximum permissible payload is:
B. 27,000 kg
C. 28,000 kg
D. 30,480 kg
Correct Answer: C
Explanation: 30,480 − 2,480 = 28,000 kg.
Q22. Which equipment is commonly used for lifting and stacking containers in terminals?
B. Passenger Escalator
C. Office Printer
D. Hand Trolley only
Correct Answer: A
Explanation: Reach stackers are specialized container-handling vehicles.
Q23. Which document or marking is associated with a freight container's international safety approval?
B. Employee Identity Card
C. Commercial Advertisement
D. Driver Attendance Sheet
Correct Answer: A
Explanation: The CSC Safety Approval Plate records relevant container safety approval information.
Q24. A terminal handles 150 TEU in five hours. Its handling productivity is:
B. 25 TEU/hour
C. 30 TEU/hour
D. 40 TEU/hour
Correct Answer: C
Explanation: 150 ÷ 5 = 30 TEU per hour.
Q25. Why is Containerisation especially relevant to CONCOR operations?
B. It facilitates multimodal transport
C. It supports terminal handling and cargo movement
D. All of the above
Correct Answer: D
Explanation: Containerisation supports container rail movement, multimodal logistics and terminal operations.
29. Frequently Asked Questions
What is Containerisation in simple words?
Containerisation means packing goods into standardized freight containers so that they can be transported and handled efficiently across different compatible transport modes.
What is the difference between TEU and FEU?
TEU means Twenty-foot Equivalent Unit, while FEU means Forty-foot Equivalent Unit. A standard 40-foot container represents 2 TEU.
What is ISO 6346?
ISO 6346 is the international standard for freight container coding, identification and marking.
What is the difference between ISO 668 and ISO 6346?
ISO 668 covers freight container dimensions, classification and ratings, while ISO 6346 covers identification and markings.
What is the purpose of the CSC Safety Approval Plate?
The CSC Safety Approval Plate provides prescribed information relating to a freight container's safety approval.
What is ACEP in container logistics?
ACEP stands for Approved Continuous Examination Programme. It is an approved method for examining and maintaining container safety.
What is the difference between a Dry Container and a Reefer Container?
A Dry Container is commonly used for general cargo, while a Reefer Container is designed for cargo requiring temperature control.
What is container stuffing?
Stuffing means loading and securing cargo inside a freight container.
Why is Containerisation important for CONCOR MT 2026?
Containerisation underpins the movement of standardized freight containers through rail transportation, road connectivity, terminal handling and multimodal logistics systems.
Which numerical questions are important?
Candidates should practise TEU calculations, container count, gross mass, tare mass, payload capacity, handling productivity, utilization and cost per TEU.
Conclusion
Containerisation has transformed modern freight transportation by enabling standardized cargo movement across compatible road, rail and maritime logistics networks.
For CONCOR Management Trainee 2026, focus especially on container types, ISO 668, ISO 6346, container identification, BIC owner codes, TEU/FEU, gross and tare mass, CSC Safety Approval Plates, ACEP, stuffing, destuffing and container-handling equipment.
Revise the important one-liners, understand container markings and dimensions, and practise numerical questions involving TEU and permissible payload.
