Short answer. Demurrage refers to the financial penalties charged to a customer when a means of transport, container, trailer or wagon, remains detained beyond a contractual free time, for example due to late loading, unloading, or delayed return to the carrier or shipowner.
Working definition: this term is not strictly standardized in the French-language professional documentation reviewed; the definition above reflects common industry usage and should be confirmed before any contractual use.
A penalty for exceeding detention time
The term originates in the maritime sector: in container transport, the transport or charter contract typically allows a number of “free” days during which the container can remain with the customer, at the port or on a terminal, at no extra cost, to be loaded, unloaded or returned to the shipping line. Once this period is exceeded, demurrage charges are billed, generally per day of delay and increasing with the length of the overrun, to encourage a fast turnaround of the equipment.
By extension, the term and the logic behind it also apply to road and rail transport: a carrier can charge detention fees when a truck or trailer is held beyond the loading or unloading time contractually agreed at a site. These charges, sometimes called “waiting fees” or “detention charges” depending on the road-haulage contract, serve the same purpose: compensating the carrier for the lost revenue of a vehicle sitting idle instead of running other jobs.
Given the financial stakes these clauses can represent on high volumes, it is advisable to check precisely, contract in hand, the definition of free time, the calculation method and the rate schedule applied by each carrier or shipowner, as these elements vary significantly from one provider to another.
FAQ
Does demurrage apply only to maritime transport?
The term originates in container shipping, but the logic of a penalty for excessive equipment detention also exists in road and rail transport, under sometimes different names such as “detention charges” or “waiting fees”.
How can you avoid paying demurrage?
By respecting the contractual free time for loading, unloading and returning equipment, and by planning dock slots ahead of time. Good synchronization between the transport plan and the actual availability of receiving teams greatly limits the risk of prolonged detention.
Related terms
Chartering · CMR consignment note · Rail / intermodal freight · Loading dock / dock leveler · Tautliner · Transport plan.
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