1. Overweight / Overloaded
Overloaded A CTU where the combined mass of the cargo and the CTU is
greater than the maximum permitted gross mass.
Overweight A CTU where the combined mass of the cargo and the CTU is
less than the maximum permitted gross mass but exceeds either:
• The maximum gross mass shown on the transport/shipping
documents; or
• The road or rail maximum masses when combined with the
tare of the container carrying vehicle.
Misdeclared gross mass
A CTU where the combined mass of the cargo and the CTU is
different from the mass declared on the transport/shipping
documents. See also overloaded and overweight

2. Overweight containers
Frequency of Gross Mass
2010 / 2011
124,760
Mean gross mass (tonnes)
20ft 40ft
2013 / 2014
97,325
Mean gross mass (tonnes)
20ft 40ft

3. Eccentric packing
The packer is required to ensuring that the cargo is correctly distributed in the CTU and properly supported where necessary;

4. Eccentric packing
With the block closest the end the eccentricity is 3%, with it towards the middle it is less than 1%

5. Eccentric packing

6. Preparation and Planning
With the block closest the end the eccentricity is 3%, with it towards the middle it is less than 1%

7. Preparation and Planning
With the block closest the end the eccentricity is 3%, with it towards the middle it is less than 1%

8. distributed in the CTU;
Cargo is correctly
distributed in the CTU;
Chapter 9 - Packing cargo into CTUs
Section 9.1 – Planning of packing; and
Annex 7 – Packing and securing cargo into CTUs
Sub-section Load distribution

9. distributed in the CTU;
Cargo is correctly
distributed in the CTU;

10. when mounted on a semi-trailer
Load distribution
when mounted on a semi-trailer
the centre of gravity should be
correctly positioned;
semi-trailer stability.