Does a shipping container have a declaration of conformity?
What does a declaration of conformity mean in the context of shipping containers?
In international maritime transport, a “declaration of conformity” (Certificate of Conformity – CoC, or Declaration of Conformity – DoC) is a fundamental concept, but its meaning varies depending on whether it applies to the shipping container itself or to the cargo it carries.
Shipping container as a transport unit
DOES NOT have a declaration of conformity in the traditional sense common for electronics (CE marking) or consumer goods. Instead, it has its own specific, internationally recognised and mandatory document: CSC Safety Approval Plate. This plate is the official confirmation of conformity with international safety standards defined by the International Convention for Safe Containers (CSC), which is administered by the International Maritime Organization (IMO).
Cargo shipped in a container often must have its own declaration of conformity according to the requirements of the destination country, which is essential for customs clearance and legal market entry.
Declaration of conformity for shipped goods
What is a Certificate of Conformity (CoC)?
Certificate of Conformity (CoC) is a formal document that confirms that a specific product or shipment batch meets all technical, health, safety, and possibly environmental standards applicable in the destination country. This document can be issued by the manufacturer, importer, or an accredited third party (e.g., certification laboratory).
Purpose and role of CoC in international transport
- Consumer and market protection: The certificate protects end‑users from dangerous, non‑conforming or counterfeit products.
- Customs clearance: In many countries the presentation of a CoC is a condition for market entry, e.g., according to African, Asian or Arab regulations (SASO, SONCAP, PVoC, etc.).
- Supply‑chain confidence: The CoC is proof that the product has been inspected and is safe and suitable for use.
- Prevention of financial loss: Absence of a CoC can lead to fines, cargo detention, return or even destruction, posing a significant risk for both sender and receiver.
Who is responsible for obtaining the CoC?
Responsibility lies with the sender or manufacturer. The carrier or freight forwarder does not normally provide this document – it must be secured before the cargo is dispatched.
Content of the declaration of conformity
- Product identification: Description, type, model, possibly serial number.
- Manufacturer/importer identification: Name, address, contact details.
- List of applied standards: Exact references to European, international or national standards (e.g., EN, ISO, IEC, CE).
- Test results: Date, location, name of the certification laboratory.
- Formal declaration of conformity: Including the name and signature of the responsible person.
- Additional requirements: For some products (e.g., electrical appliances, toys) documentation of tests, inspection reports, photographs and other attachments may be required.
Examples and radical differences in legislations
- European Union: Mandatory CE marking and issuance of an EU Declaration of Conformity (EU DoC).
- Saudi Arabia: SABER/SASO system – mandatory CoC for most imported goods.
- Nigeria: SONCAP Certificate for selected products.
- Kenya, Tanzania: Mandatory PVoC (Pre‑Export Verification of Conformity).
Shipping container certification: CSC safety approval plate
What is the CSC Convention and why is it important?
International Convention for Safe Containers (CSC) was adopted in 1972 under the auspices of the IMO and the United Nations in response to the rapid growth of containerisation and the need for global safety standards. It has two main objectives:
- Ensure a high level of safety during handling and transport of containers
- Facilitate international container transport through uniform safety regulations
CSC standards apply to the majority of containers used in international trade (except containers for air transport and special carriers). A key requirement is that every container bears a permanently attached CSC safety approval plate.
Origin and development of the CSC Convention
- Adopted in 1972, entered into force in 1977
- Regular updates: 1981 (marking of older containers), 1983 (continuous inspection programmes), 1991 (changes to marking and inspections), 2012 (new plate and inspection requirements)
- Emphasis on international recognition: approval by one contracting state is respected by all parties to the convention
What does the CSC safety approval plate contain?
- Inscription “CSC SAFETY APPROVAL”
- State of approval and reference number
- Date of manufacture
- Manufacturer identification number
- Maximum Gross Weight (MGW)
- Allowable Stacking Weight
- Racking Test Load Value
- Next Examination Date (NED)
- Number of the approved continuous inspection programme (ACEP), if applicable
Types of containers by ownership
- Carrier‑owned container (COC): Owned by the shipping line
- Shipper‑owned container (SOC): Owned by the shipper (buyer)
For international transport, every container must have a valid CSC plate, regardless of ownership type.
Process of conformity assessment and container inspections
Initial approval
The container manufacturer must, under the supervision of an accredited body (e.g., Lloyd’s Register, Bureau Veritas, DNV GL), carry out a series of tests according to the annexes of the CSC Convention:
- Static and dynamic load tests
- Stacking, lifting, side‑stability tests
- Verification of corner fittings – crucial for safety and handling
Upon successful completion, a safety plate is issued and the container becomes eligible for international transport.
Periodic inspections and their systems
| System | Description | Intervals | Advantages / Disadvantages |
|---|---|---|---|
| PES | Periodic Examination Scheme – mandatory regular inspections | 1 to 5 years, then max. 30 months | Suitable for small fleets, simple tracking |
| ACEP | Approved Continuous Examination Programme – continuous inspections as part of maintenance | Continuous, no fixed date | Suitable for large operators, flexible, requires approval |
| NED | Next Examination Date – date of next inspection on the plate (in PES); not required to state in ACEP | – | – |
In case of serious damage or non‑compliance, the CSC plate is temporarily invalid until repair and re‑inspection are performed.
Overview of main differences: CoC for goods vs. CSC for container
| Criterion | CoC for goods (product) | CSC for container |
|---|---|---|
| Subject | Specific product / shipment | Physical shipping container |
| Purpose | Conformity with destination‑country regulations | Safety of the structure during transport |
| Legal basis | National / regional legislation | International IMO convention (CSC) |
| Form | Document (paper / digital) | Metal plate permanently attached |
| Issuing authority | Manufacturer, importer, certification body | Accredited classification society |
| Validity | For a specific shipment / batch | Throughout the container’s life, provided regular maintenance |
Related documentation and legislative requirements in maritime transport
Successful transport and smooth customs clearance also require additional documents:
- Bill of Lading: Legal proof of cargo receipt and transport contract
- Cargo Manifest: Complete list of all cargo on board, important for customs and port control
- Customs declaration: Description of goods, values, origin – essential for duty and VAT calculation
- Commercial Invoice: Sale document; data must match the customs declaration and CoC
- Cargo Insurance: Recommended, sometimes mandatory, especially for high‑value shipments
Important: All information on these documents must be consistent – any discrepancy can lead to detention, fines or other legal disputes.
Legislative and technical standards for containers
- ISO 668: Standardisation of container dimensions and types (e.g., 20’/40’ containers, high cube)
- ISO 1496: Technical requirements for container construction and equipment
- ISO 6346: System for container identification and marking
Practical tip: When buying or selling a used container, always verify the validity of the CSC plate and, if possible, obtain the latest inspection protocol. CSC is not required for long‑term storage without transport, but it is mandatory for transport.
Recommendations for customers and container users
- If you intend to use a container for transport: Always confirm that it has a valid CSC plate and has passed the latest inspection.
- If you plan to use a container for storage or as a building block: A CSC plate is not mandatory, but a technical inspection is advisable.
- When purchasing a container as SOC: Require the inspection protocol and a valid plate. After major modifications, the container must be re‑certified.
- If you transport specialised goods: Determine the specific CoC requirements of the destination country (e.g., electrical equipment, chemicals, food).
Conclusion: Dual responsibility in international transport
The answer to “Does a shipping container have a declaration of conformity?” is: YES, but in a specific form. Its “declaration” is the CSC safety approval plate, which confirms conformity with international safety standards. For the cargo itself, a separate CoC is usually required.
Each participant in the transport chain (sender, carrier, receiver) has its own obligation:
- Sender: Provides the CoC for the cargo
- Container owner / carrier: Ensures the CSC plate is valid
Failure to meet these obligations can result in cargo detention, fines, destruction of goods or denial of insurance coverage.
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