ZIM locks in new Sekstant Door Sensor technology

ZIM Integrated Shipping Services Ltd. (ZIM) has announced its latest investment in the shipping industry with the order of 1,000 Star Cool reefers with Sekstant door sensors and a similar volume for retrofitting to its existing Star Cool reefers.

The move comes as part of ZIM’s ongoing collaboration with Maersk Container Industry (MCI) to upgrade its ZIMonitor reefer fleet and support the growth of temperature-controlled cargo.

The Star Cool population has rapidly grown with ZIM, now covering approximately one-third of the reefer fleet. ZIM has invested in MCI’s complete reefer package, including the Star Cool Integrated and the Sekstant gateway for reefer connectivity. The Sekstant Door sensor is a wireless door opening surveillance system that has been co-developed by ZIM, a pioneer in this field. The Sekstant solution creates the tracking and data needed to deliver ZIM’s commercial reefer tracking product, ZIMonitor.


We are committed to providing the highest level of service and reliability to our customers, and our investment in the Sekstant gateways and door sensors for our Star Cool reefers is just one example of that commitment. With the Sekstant solution, we can better track and monitor our reefer fleet, and provide our customers with real-time information about their cargo, ensuring the safe and timely delivery of their products.

Gil Lehmann, Head of Global Logistics and Equipment at ZIM

The Sekstant door sensor is an add-on that provides even more information to the digital fleet management system. It is now possible to monitor when the door of the reefer has been closed, and just as important – when it has been opened. The door events are registered in the Sekstant cloud and are visible in the Sekstant user interface. The Sekstant digital ecosystem enables access to real-time reefer information, monitoring, reporting, and seamless fleet management from anywhere in the world. The door sensor data is consolidated with the remaining reefer control data incl. time stamp and GPS coordinates. It comes as a factory-mounted option or can be retrofitted on every Sekstant-equipped reefer. The wireless sensor connects to the reefer controller, and door events are even captured while the reefer is powered off, making it possible to document if a door event has deviated from the planned timeline, and trigger an alert.

Part of ZIM’s fleet also includes Star Cool CA to cater to ZIM’s controlled atmosphere shipments. Energy efficiency and product reliability are keys to success and therefore ZIM has placed its trust in MCI’s Star Cool Controlled Atmosphere system, which has over 10 years of proven performance and reliability in the market. ZIM’s latest investment in Sekstant door sensors and MCI’s complete reefer package demonstrates its ongoing commitment to the growth of the shipping industry and its customers.

The Sekstant door sensors will provide ZIM with the data and tracking it needs to deliver ZIMonitor, a first-class solution for high value and sensitive cargo. The new Star Cool CA reefers entered ZIM’s container fleet during March 2023.

Povl D. Rasmussen

Povl D. Rasmussen

Press Officer