Introduction
Many Indian exporters have never read the CTU Code. Yet when cargo is damaged at sea, it is often the guideline used to judge whether the container was packed and secured properly. If your packing fell short, your claim can weaken.
This guide explains the CTU Code in plain terms: what it is, who it applies to, and the practical rules that matter for containers leaving Mundra, Kandla, Pipavav, or Nhava Sheva. It comes from our 14 years of supplying lashing products to Indian exporters. We cover the code’s scope, key requirements, compliance steps, and common gaps.
What Is the CTU Code?
The CTU Code is the IMO/ILO/UNECE Code of Practice for Packing of Cargo Transport Units, published in 2014. A cargo transport unit (CTU) includes:
- Freight containers
- Road trailers and swap bodies
- Rail wagons
- Portable tanks
The code gives guidance on packing and securing cargo in these units for transport by road, rail, and sea.
Is It Mandatory?
The code is a non-mandatory code of practice. However, it is widely used as the reference standard by shipping lines, insurers, surveyors, and courts. In practice, following it is the expected standard of care.
Who It Applies To
The code describes responsibilities across the supply chain:
- Shipper: the party that arranges the shipment and provides cargo information
- Packer: the party that loads and secures the cargo in the unit
- Consignor and carrier: each with defined duties
For most Indian exporters who load at their own factory, you are both shipper and packer. That means the securing responsibility usually sits with you.
Key Requirements
Check the Unit Before Packing
- Inspect for holes, damage, and odour
- Check lashing points
- Make sure the floor is sound and dry
Load Distribution
- Keep the centre of gravity near the middle
- Avoid concentrating heavy weight in one area
- Spread heavy loads with bearers
Securing Against Movement
The code gives acceleration values cargo must be secured against. For sea transport, they vary by sea area, with typical values such as:
- Lengthwise: around 0.3g to 0.4g
- Sideways: around 0.5g to 0.8g, depending on sea area
- Vertical movement that reduces friction
For road transport, lengthwise forces can be higher, around 0.8g forward during braking. Containers moved by truck to port face this too.
Securing Methods
The code describes:
- Blocking against walls and other cargo
- Lashing to lashing points
- Friction, with suitable friction-increasing material
- Combinations of these
Weight and VGM
Under SOLAS, a Verified Gross Mass (VGM) is required before a packed container is loaded on a ship. Overweight containers are a known safety risk.
Information to Carriers
The shipper must give accurate cargo descriptions, including dangerous goods where relevant.
What This Means for Indian Exporters
Here is the uncomfortable pattern. Most packing failures in Indian export containers are not caused by poor products. They come from:
- No load plan
- Too few lashings for heavy cargo
- No blocking at the door end
- Reliance on floor friction alone
The code does not demand expensive equipment. It demands calculation and method.
Practical Steps to Follow the CTU Code
Step 1: Make a Load Plan
Decide where each unit goes before loading. Keep weight centred.
Step 2: Inspect the Container
Note any damage and check lashing points.
Step 3: Calculate Restraint
Estimate the force each unit must resist, using sea and road acceleration values. Divide across your lashings.
Step 4: Choose Products
Select cord strap, lashing strip, and buckles with known system break strength.
Step 5: Block and Lash
Block against walls and between units. Lash heavy cargo to lashing points.
Step 6: Fill Voids
Use dunnage bags, timber, or bracing.
Step 7: Secure the Door End
The doors must not carry cargo load.
Step 8: Record
Take photos of the packed container before closing. Keep the VGM and packing records.
Helpful Documents to Keep
- Load plan
- Photos at each stage
- Product specifications for strap and buckles
- VGM declaration
- Any lashing survey report
These records help if a claim is filed.
Mistakes to Avoid
Treating the Code as Optional in Practice
It is widely used to judge packing quality.
Ignoring Road Forces
Containers face strong braking forces on the way to port.
No Photos
Without photos, it is hard to show packing was done properly.
Using Strap With No Known Rating
You cannot calculate restraint without break strength figures.
A Simple CTU Code Check for a Single Crate
Here is how the code’s logic applies to a 2,000 kg crate shipped by sea in a rough sea area.
Forces to Resist
- Sideways: about 0.8 × 2,000 = 1,600 kg
- Lengthwise: about 0.4 × 2,000 = 800 kg
- Floor friction helps, but vertical motion reduces it, so plan conservatively
Restraint Plan
- Block the crate against the side wall on one side
- Use three cord strap lashings to the opposite side, each with a working load of about 550 kg
- Block forward against the front wall
- Use two lashings toward the doors
Product Choice
With a 2:1 margin, each lashing needs a system break strength of about 1,100 kg. A 25mm or 32mm system fits.
This is the kind of simple calculation the code expects. It takes minutes once your team knows the method.
Training Your Packing Team
The code places weight on competence. People who pack containers should understand:
- How forces act on cargo in transit
- How to read strap and buckle ratings
- How to block, brace, and lash correctly
- How to record the packing
A one-page checklist at each loading bay goes a long way. So does a short internal session every few months for new staff.
How Buyers and Carriers Use the Code
Overseas buyers increasingly write packing requirements into purchase orders. Some ask for photos of the packed container. Some ask for products with stated break strength. Carriers and insurers may refer to the code after damage occurs.
For exporters, this means packing quality is becoming part of the sale, not just a warehouse task. A clean, documented container is easier to defend and easier to sell again.
Common Gaps We See in Indian Containers
- Heavy cargo placed at the door end because it was loaded last
- Strap used without a buckle matched to its width
- Pallets lashed only around the top, leaving the base free
- No record of how the container was packed
FAQs
Is the CTU Code a law in India?
It is a non-mandatory code of practice. However, it is widely used as the reference standard for packing and securing, and the VGM requirement under SOLAS is mandatory.
Who is responsible if cargo shifts?
Responsibility depends on contracts and facts. When the exporter packs the container, the packing usually falls under its responsibility.
Do I need a lashing certificate?
Not always. Some buyers, carriers, or insurers request a lashing survey for heavy or high-value cargo.
Does the CTU Code specify strap brands?
No. It sets principles and forces. You choose products that meet the required restraint.
Conclusion
The CTU Code turns cargo securing into a method: inspect, plan, calculate, secure, and record. Indian exporters who follow it reduce damage and strengthen their position if something goes wrong. If you want help matching your lashing products to CTU Code forces, send us your cargo details.
About Amass Strapping Solution
Amass Strapping Solution, Shapar, Rajkot, has manufactured cord polyester strapping, container lashing strip, and wire buckles since 2012. We help Indian exporters choose products with known strength ratings so their lashing plans hold up.
Email amass.india@yahoo.com or call +91 99250 03577 for CTU-aligned lashing support.