Working in import and export logistics, you’ll realize that things don’t always go according to plan. Unexpected incidents, sudden delays, unnecessary expenditures, and more. While controlling everything may be challenging, improvement is always possible. As digital logistics technologies advance, supply chain managers will be able to better manage inventory from the port to the warehouse.
In the shipping and logistics industry, understanding the terms Demurrage, Detention, and Free time is crucial for managing costs effectively. These concepts are intertwined with the process of shipping goods across the globe, and their management can significantly impact the overall cost of transportation. Here’s a breakdown of each term and strategies for minimizing associated costs.

Demurrage
Demurrage refers to the charge that is levied when import cargo is stored within the port terminal beyond the allotted free time. The free time refers to a specified period during which the cargo can be stored in the terminal without incurring additional charges. Once this period expires, demurrage charges start to accumulate. These charges are imposed to encourage the timely pick-up of cargo and to ensure the efficient use of storage space within the terminal.
Detention
Detention charges, on the other hand, are incurred when the shipping container is taken out of the port but is not returned within the allotted free time. This free time for container usage outside the port is provided by the shipping line, and once it expires, detention charges begin to accumulate until the container is returned. Detention fees encourage the prompt return of containers, helping to maintain the circulation of shipping lines’ equipment.

Free time
Free time is a grace period given to shippers or consignees that allows them to store cargo at the port or use the shipping container without incurring additional charges. The length of this period can vary based on the shipping line, the port, and the type of cargo. Managing free time efficiently is key to avoiding demurrage and detention charges.
Cost Reduction Strategies
- Advance Planning: Properly scheduling the arrival of goods and understanding the port’s procedures can help in avoiding unnecessary delays. Completing documentation and customs clearance processes ahead of time is crucial.
- Utilize Digital Tracking Tools: Leveraging technology to track cargo in real-time can help stakeholders make informed decisions and manage their shipments more effectively, reducing the risk of demurrage and detention.
- Maintain Open Communication with Service Providers: Regular communication with freight forwarders, customs brokers, and shipping lines can help in efficiently managing cargo pick-up and container return times.
- Flexible Container Return Plans: Being aware of container return policies, including locations and operational hours, and having contingency plans in place can help in avoiding detention charges.

Managing demurrage and detention charges effectively requires proactive planning, efficient operation, and the strategic use of technology. By understanding and applying these principles, shippers and consignees can significantly reduce their overall shipping costs and enhance their operational efficiency.
TRADLINX is dedicated to streamlining and optimizing unnecessary logistics processes, ensuring unrestricted access to import and export logistics information for everyone, and optimizing supply chain operations. Manage and integrate your supply chain network with Tradelinx’s end-to-end supply chain management solution, TRADLINX Ocean Visibility. Offering real-time logistics visibility, forecasting and analytics, and big data that other logistics companies cannot provide, we help you make informed and data-driven decisions.
TRADLINX Ocean Visibility revolutionizes supply chain operations with its Ocean Visibility features, offering real-time shipment tracking, predictive analytics for lead times, and seamless management tools for freight forwarders and shippers worldwide.





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