Today, 51 ports are able to handle ships of more than 10,000 teu. However, with 110 new ships, the number of VLCSs (Very Large Container Ships) to be deployed in the three years to come is very large. This means that a number of ports which are not able to handle the large ships today will have to improve on the increased demands posed by the large ships, the analysis house Alphaliner states.
It is expected that the ships which are among the largest in operation today and sail on one of the twenty routes or service strings on which the VLCSs will become deployed will be moved to smaller routes as new and larger ships are deployed. The redistribution of ships from one route to another as the newer ships take over is called cascading.