From the Journal of Commerce:

Hutchison Port Holdings said the majority of terminals in its global network will offer container-weighing services to help supply chain stakeholders comply with the amendment to the SOLAS convention that requires all containers to have a verified gross mass before they are loaded onto a vessel.

HPH said its network of ports will be ready for full compliance with the newly-amended convention when it takes global effect on July 1.

Earlier APM Terminals said it will provide container weighing services at 29 locations across its global network to ensure a smooth transition as shippers adjust to the new rule.

More at the JOC