📚 A Basic Definition in English
Here is a core definition from an English source:
- Demurrage: “A separate freight charge, in addition to ordinary shipping costs, which is imposed according to the terms of a carriage contract upon the person responsible for unreasonable delays in loading or unloading cargo. In maritime law, demurrage is the amount identified in a charter contract as damages payable to a shipowner as compensation for the detention of a ship beyond the time specified by a charter party for loading and unloading or for sailing” .
- Dictionary Meaning: It is also defined as “the compensation payable to a carrier of freight whose vehicle or vessel is delayed, as by failure to load or unload the freight within the time allowed” .
📖 Explanation of Demurrage and Related Concepts
Based on several professional logistics websites, here is a more detailed explanation of how demurrage works in practice:
- What is Demurrage?: In shipping, demurrage is a penalty fee charged to the cargo owner (or the party that rented the container) for failing to load or unload and return the container within the free time allotted . It is intended to compensate the shipping company for the detention of its assets.
- Free Time: This is the core of demurrage. When you rent a container, the shipping company gives you a set number of free days (Free Time) to use it without charge. This applies both at the origin port (for loading) and the destination port (for unloading) . Demurrage fees start accruing the day after the free time expires .
- Demurrage vs. Detention: These are two different but related charges.
- Demurrage generally refers to the delay of the cargo inside the port or terminal area .
- Detention refers to the delay of the container outside the port (e.g., you keep the container at your facility for too long) .
- Dispatch (Despatch): This is the opposite of demurrage. If you load or unload the cargo and return the container earlier than the free time allows, some shipping companies may pay you a reward, which is called “dispatch” .
🔍 How to Find English Articles
The search results I obtained are primarily from logistics company blogs and are mostly in Persian. To find comprehensive English articles, I suggest you:
- Use Academic Search Engines: Try platforms like Google Scholar, Scopus, or ScienceDirect. You can search for terms like “demurrage and detention in container shipping” or “port demurrage charges”.
- Refine Your Search: Adding words like “journal article,” “PDF,” or “research paper” to your search can help filter out commercial websites and find academic sources.
- Explore Industry Resources: Reputable industry organizations like the International Maritime Organization (IMO) or professional publications often publish detailed reports and articles on such topics.
I hope this explanation provides a solid foundation. Would you like me to help you search for academic articles on a specific aspect of demurrage, such as its economic impact or legal frameworks?








