CWS container image - website logo mockup.jpg

Container Weight System (CWS™)

Fast, accurate container weighing without the hassle

Trusted by major ports and terminals worldwide, CWS reinvents the VGM (Verified Gross Mass) weighing process to take time-consuming weighbridges – and their single points of failure – out of the equation. Delivering efficiency increases of up to 300%, our system weighs containers during your routine stacking operations, enabling you to automatically generate highly-accurate VGM certificates in real time.

With its turnkey design, this faster, automated method of VGM verification opens the door to new revenue streams that ensure swift ROI. By weighing and validating every container’s VGM as part of your existing lifting and stacking cycles – without compromising container throughput – you can charge a processing fee for the VGM verification of all containers handled. Additional fees can also be charged for any discrepancies found between the actual weight of containers and the weight stated on their VGMs.

CWS™ ensures full compliance with SOLAS directives, while integrating seamlessly with your pre-existing lifting equipment, such as reach stackers, straddle carriers, RTGs (Rubber Tired Gantry Cranes) and RMGs (Rail Mounted Gantry Cranes).


Submit a sales enquiry for CWS




Find out more about CWS


Don’t just take out word for it.
See what our customers have to say:


After investing in CWS™, Diogo Pereira de Castro, director at Yilport Ferrol, said:

“From concept to installation, JF Strainstall’s team were responsive, professional and reliable throughout our collaboration. Their solution was equally impressive. Since installation, our container weighing speed has increased three-fold, delivering a faster service for our customers.”


Since deploying CWS™, Nick Loader, chief executive officer at DP World Southampton, said:

“We assessed a number of different options to be able to offer a container weighing service to our customers and selected JF Strainstall’s system because it doesn’t require any changes to our port operating procedures and is quick to install. The trials demonstrated an accuracy above our expectations.”