Ocean Freight Surcharges

DET Surcharge (Detention)

DET (Detention): Charge for keeping containers outside port beyond free time. When it applies, typical range, and who pays under common Incoterms.

Code
DET
Name
Detention
Typical range
$50-$300+ per day after free time
Routes
All routes - applies at destination

Detention is the charge for keeping a carrier's container outside the port or terminal beyond the allowed free time. While demurrage applies at the port, detention applies once the container has left the port and is at your warehouse, distribution center, or other location.

Detention occurs when: • Container is picked up but not unpacked quickly • Empty container not returned to depot • Warehouse delays in unloading • Using container as temporary storage

Detention concepts: • Combined D&D: Some carriers offer merged demurrage/detention free time • Per Diem Rate: Daily charge after free time expires • Equipment Type: 40HC may have different rates than 20ft

Typical detention timeline: • Days 1-4: Free (after leaving port) • Days 5-7: $50/day per container • Days 8-14: $100/day per container • Days 15+: $150/day per container

To calculate total equipment time: Demurrage free time + Detention free time = Total free days Example: 5 days demurrage + 4 days detention = 9 total free days

When DET applies

When containers are held outside the port beyond free time.

Who pays DET under common Incoterms

  • FOB: buyer
  • CIF: buyer
  • EXW: buyer
  • DAP: seller

How to minimize DET

  • Schedule unloading before container arrives
  • Have transport ready to return empty
  • Negotiate extended combined D&D free time
  • Use container tracking to manage deadlines
  • Consider drop-and-hook operations

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Frequently asked questions

What is the DET surcharge?

DET stands for Detention. Charge for keeping containers outside port beyond free time.

When does DET apply?

When containers are held outside the port beyond free time.

How much is DET?

The typical range is $50-$300+ per day after free time. Confirm the current amount with your carrier or forwarder.