Detention Claims for Import Containers — Key Points to Verify
Interlink編集部What Is a Detention Claim
A detention claim refers to the verification process for detention charges billed when an import FCL container cannot be returned as an empty container to the designated return location within the Free Time set by the shipping line or NVOCC, after the container has been gate-out from the CY.
In this article, "claim" does not mean a marine cargo insurance claim, but rather the invoice or payment request issued by the shipping line or NVOCC for Detention charges.
Detention charges arise after the full container has been gate-out from the CY. While Demurrage applies if the full container remains at the CY or terminal beyond free time without gate-out, Detention is related to the period after gate-out, during which the container is emptied and returned as an empty container to the specified return location.
For import FCL, even if the container is gate-out from the CY, the container management process is not yet completed. The container return process is only complete after delivery, devanning, empty container condition confirmation, return reservation, and actual return to the designated empty container return location are all done.
Therefore, when receiving a Detention claim, it is necessary not just to look at the invoiced amount but also to check in a chronological order: the container involved, CY gate-out date, applicable Free Time, Last Free Date, devanning date, return reservation status, designated return location, actual empty container return date, and applicable charge category.
Also, the name on the invoice is not always the party ultimately responsible for bearing the cost. The contractual invoicing party with the shipping line or NVOCC and the internal cost-bearers such as importer, delivery destination, freight forwarder, or drayage company need to be separately identified and organized.
Scope Covered in This Article
| Item | Content Covered in This Article | Content Covered in Other Articles |
|---|---|---|
| Verification of Detention Charges | Procedures for verifying invoices, relevant containers, Free Time, Last Free Date, actual return date, charge categories, and delay causes. | Verification of Detention charges is the core focus of this article. |
| Detention | Basic meaning and occurrence segments necessary to verify charges. | The Detention article covers definitions of charges, Free Time, tariff structure, and basic differences from Demurrage. |
| Situations Causing Detention | Organizes causes related to delivery, devanning, return scheduling, and return location to identify charge reasons. | The Situations Causing Detention article covers detailed case examples for each cause. |
| CY Gate-Out | Verification of CY gate-out date and gate-out records as the starting point for Detention management. | The CY Gate-Out article covers Import Permit, D/O, terminal gate-out conditions, gate-out reservations, and drayage arrangements. |
| Responsibility for Empty Container Return Charges | Organizes delay causes and factual details related to Detention claims. | The Responsibility for Empty Container Return Charges article covers return location changes, additional drayage, depot congestion, and cost burdens in detail. |
| Demurrage | Differences in occurrence segments with Detention and checks for overlapping claims. | The Demurrage article covers CY Free Time, start date calculation, excess days, and tariff structure. |
| Drayage Waiting Charges and Re-dispatch Costs | Verification of cost categories and cause documentation when charged simultaneously with Detention. | The Drayage-related articles cover waiting times, cancellations, re-dispatch, and inland transportation costs. |
Practical Background for Setting Detention
Marine containers are usually transport equipment continuously operated by shipping lines and similar entities.
If the importer holds a loaded container for an extended period, that container cannot be used for the next shipment, affecting the allocation of empty containers and equipment operations.
Therefore, shipping lines or NVOCCs recognize a specific period as Free Time and set Detention charges if empty containers are not returned after this period expires.
Detention is not a penalty for delayed delivery alone; it relates to the costs involved when the container provided by the carrier is not returned to the designated location within the specified period.
Additionally, even within the return deadline, if cargo residue, contamination, or odors remain inside the container and the designated return location refuses to accept it, the return may not be considered complete. Separate from Detention, cleaning fees, repair costs, or additional drayage charges could also become issues.
Difference Between Demurrage and Detention
| Comparison Item | Demurrage | Detention | Points to Note When Verifying Claims |
|---|---|---|---|
| Main Meaning | Overage charge for the period when a loaded container remains at the CY or terminal | Overage charge applied if an empty container is not returned within the specified period after CY gate-out | The applicable period should be separated and confirmed even for the same container. |
| Main Applicable Period | From vessel discharge until CY gate-out | From CY gate-out until return of the empty container | The CY gate-out date generally serves as the dividing point between these charges. |
| Main Reference Date | Date of berth, discharge date, or CY gate-in date, etc. | CY gate-out date or the following day, etc. | The actual start date of calculation should be confirmed according to the applicable tariff and contract terms. |
| Record Indicating End of Period | Gate-out or CY gate-out record of the loaded container | Gate-in or completion record of the empty container return | EIR, terminal records, and depot return records should be checked. |
| Main Causes | Delays in customs clearance, Delivery Order, payment settlement, delivery scheduling, chassis availability, etc. | Issues with delivery destination acceptance, devanning, return scheduling, return location, vehicle or container condition | Only causes related to the applicable charging period should be organized. |
| Primary Management Focus | Import Permit, cargo release procedures, CY gate-out | Delivery to the delivery destination, devanning, empty container return | For Detention claims, records after gate-out serve as the main management basis. |
| Combined D&D | Depending on the contract or tariff, Demurrage and Detention may not be separated and managed integrally from discharge to empty container return. | First confirm whether the invoice and contract apply a Separate or Combined calculation method. | |
Even if Detention charges are claimed, if the contract terms specify Combined Demurrage and Detention, it may not be possible to split costs solely based on the CY gate-out date.
Items to Check Immediately After Receiving a Claim
| Check Item | Details to Confirm | Key Documents | Action if Issues Are Found |
|---|---|---|---|
| Claimant | Whether the claim is from the shipping line, NVOCC, agent, or freight forwarder | Invoice, Email, Arrival Notice | Confirm the contractual relationship and the basis for the claim. |
| Claim Addressee | Which party is specified as the addressee: importer, freight forwarder, NVOCC, etc. | Invoice, B/L, Transport Contract | Distinguish between the claim addressee and the party ultimately responsible for payment. |
| Target Container(s) | Container number(s), size, type, and quantity | Invoice, B/L, Arrival Notice, EIR | Verify that containers are correct and avoid duplicate claims. |
| Relevant Shipment | B/L number, House B/L, Master B/L, vessel name, and voyage number | B/L, Arrival Notice, Invoice | Check for duplicate claims on the House side and Master side. |
| Claimed Period | Start date, end date, and number of days exceeded | Claim statement, Tariff, Free Time confirmation screen | Recalculate based on the Last Free Date and actual return date. |
| Applicable Free Time | Standard Free Time, individual contract, extended Free Time, or Combined conditions | Quotation, Service contract, Booking confirmation, Shipping line website | Confirm the conditions specific to the case over general rate tables. |
| Applicable Charges | Container type, size, excess tier, and daily rate | Tariff, Claim statement, Contract | Verify distinctions such as 20ft vs. 40ft, Dry vs. Reefer containers. |
| Actual Return Date | Date and time the empty container was received at the designated return location | Return EIR, Gate-In records, Driver log | Confirm actual receipt completion, not the departure date for return. |
| Dispute Deadline | Deadline and method for disputing the claim contents | Invoice, Shipping line notice, Contract terms | Submit reasons and evidence before the deadline expires. |
Order of Confirmation for Detention Claims
- Confirm the invoice number, claimant, and billed party.
- Confirm the B/L number and the relevant container number.
- Confirm whether the claim is for Detention only or Combined Demurrage and Detention.
- Verify the supporting documents for the Free Time applied to the case.
- Confirm the CY gate-out date and the calculation start date.
- Confirm the Last Free Date.
- Confirm the actual empty container return date and time.
- Recalculate the chargeable days according to the tariff calculation method.
- Confirm the container size, type, and applicable rate level.
- Check the treatment of weekends, holidays, and the return location’s closed days.
- Confirm the designated return location and the actual return location.
- Confirm whether a return reservation was required and review reservation history.
- Organize the reasons and timing for any delayed return.
- Separate and organize the billed party and the final candidate responsible for the cost.
- If there are errors or grounds for objection, make inquiries with evidence within the prescribed deadline.
Timeline When Detention Occurs
| Stage | Main Status | Relation to Detention | Confirmation Records |
|---|---|---|---|
| 1. Vessel Arrival and CY In-Gate | Loaded containers arrive at the port | This stage mainly involves Demurrage management. | Vessel movement status, CY in-gate records |
| 2. Import Permit and D/O Processing | Preparing cargo release conditions with customs and carrier | Delays here will push back the CY gate-out date. | Import Permit, Delivery Order, D/O response information |
| 3. CY Gate-Out | Loaded container is moved out of the terminal | A critical reference date for starting Detention calculation. | Gate-Out EIR, gate-out records, driver daily report |
| 4. Delivery | Transporting loaded containers to the delivery destination | If acceptance is not possible, unpacking and return will be delayed. | Delivery reservation, arrival record, Delivery Receipt |
| 5. Devanning | Removing cargo from the container | Work time or delays affect the permissible return time. | Work start and end times, work reports, photos |
| 6. Empty Container Inspection | Checking for remaining cargo, damage, odors, defects, etc. | Cleaning or repairs needed will delay the return. | Post-devanning photos, EIR, cleaning records |
| 7. Return Reservation | Confirming reservation or acceptance conditions at the designated return location | Return date may be delayed due to insufficient reservation slots or similar issues. | Reservation screen, screenshots, emails |
| 8. Empty Container Return | Delivering the empty container to the specified return location | Detention period generally ends upon confirmed receipt of the return. | Return EIR, Gate-In records, depot receipt records |
Confirm Multiple Deadlines and Timeframes Separately
| Deadline / Time | Meaning | Relation to Claim Verification | Notes |
|---|---|---|---|
| Detention Free Time | The period during which no additional charges are incurred for empty container return | It serves as the basis for calculating the Last Free Date. | Distinguish between standard terms and individual contract conditions. |
| CY Gate-Out Date | The date when the loaded container was taken out from the CY | May be the starting date or reference date for counting Detention. | Confirm in the tariff whether the start counts from the gate-out date itself or the following day. |
| Last Free Date | The final date on which additional Detention charges do not apply | The key date for verifying the chargeable period. | Check the shipping line’s specific system screen or contract terms. |
| Delivery Destination Acceptance Time | The time period during which the delivery location can accept the container | If acceptance is unavailable, devanning and return may be delayed. | Confirm reservation, lunch breaks, nighttime, weekends, and public holiday conditions. |
| Devanning Working Hours | The time allocated to unload cargo from the container | Used to determine the time at which container return becomes possible. | Confirm cargo quantity, packaging, equipment, and workforce. |
| Return Reservation Deadline | The cutoff time to secure or modify a container return reservation | Even within the return deadline, there may be cases where the container cannot be returned without a reservation. | Record the date and time of the reservation attempt and the outcome. |
| Container Yard Acceptance Time | The time when the return depot accepts empty containers | Returns after acceptance hours may count as the next business day. | Check the gate closing time and any temporary closures. |
| Actual Return Date & Time | The date and time the empty container was received at the designated location | It marks the end point of the chargeable period. | Confirm Gate-In or receipt completion, not the departure date for return. |
How to Verify Billing Days and Charges
The calculation method for Detention varies depending on the shipping line, NVOCC, container type, port, and individual contracts, so it is not possible to judge solely by a uniform formula.
Basically, verify the following four items.
| Verification Stage | Verification Item | Common Errors | Reference Documents |
|---|---|---|---|
| 1. Last Free Date | The final day on which no additional charges are incurred for the case | Confusing general tariff with individual Free Time | Contract, booking confirmation, shipping line system |
| 2. Chargeable Days | The number of chargeable days from the Last Free Date until the actual return date | Misunderstanding whether the return date or holidays are included | Tariff, billing details, return EIR |
| 3. Rate Tier | Daily rate tiers from the first day of excess onward | Calculating progressive rates as a flat daily rate | Applicable tariff, contract rates |
| 4. Container Type | 20ft, 40ft, Dry, Reefer, Special, etc. | Incorrect registration of size or type | B/L, container information, invoice |
Example of Calculating the Number of Chargeable Days
The following is a hypothetical example for explanation purposes. In actual calculations, the Tariff and contract terms applicable to the specific case must always be used.
| Item to Confirm | Assumed Details | Confirmation Result | Important Notes |
|---|---|---|---|
| CY Gate-Out Date | June 5 | Confirmed by gate-out record | Check the Tariff to determine whether the start day is the gate-out date or the following day. |
| Last Free Date | June 10 | Confirmed on the Free Time screen for the case | Do not estimate from general rate tables. |
| Empty Container Return Date | June 13 | Confirmed by return EIR | The receipt date should be used, not the driver’s departure date. |
| Chargeable Period | June 11 to June 13 | Example corresponds to 3 days | If holidays are excluded or the handling of the return date differs, the result will change accordingly. |
| Daily Rate | First-tier rate from day 1 to day 4 of excess | First-tier daily rate × 3 days | In a progressive Tariff, the daily rate changes depending on the excess tier. |
If the number of days or the amount on the invoice does not match this recalculation, identify where discrepancies exist in the Free Time calculation, dates, container type, or rate tier.
Isolate the Cause of Return Delays
| Cause Category | Main Details | Main Parties Involved | Reference Documents | Key Points for Assessment |
|---|---|---|---|---|
| Delivery Location Acceptance | Insufficient reservation slots, acceptance time restrictions, warehouse congestion | Importer, delivery location, freight forwarder | Delivery reservation, acceptance response, emails | Confirm whether acceptance conditions were checked before cargo gate-out. |
| Devanning | Insufficient workers, lack of equipment, cargo volume or special cargo shape | Delivery location, warehouse, importer | Work records, photos, start and end times | Confirm whether required work time could have been anticipated in advance. |
| Return Reservation | Forgot reservation, insufficient reservation slots, reservation system failure | Freight forwarder, drayage company, return depot | Reservation screen, operation logs, screenshots | Check when the reservation was attempted and whether alternative slots were available. |
| Return Destination | Incorrect designated location, change of return destination, depot closure or congestion | Shipping line, NVOCC, drayage company | Return instructions, change notifications, driver daily reports | Verify timing of change notifications and transmission of instructions. |
| Drayage | Vehicle shortage, chassis shortage, dispatch omission, driving time restrictions | Drayage company, freight forwarder | Dispatch requests, driver daily reports, GPS records | Confirm timing of vehicle securing and arrangement of alternatives. |
| Holidays / Operating Hours | Weekends and public holidays, long holidays, shortened business hours | Return depot, shipping line, drayage company | Business announcements, reception hours, holiday notifications | Check whether these were confirmable at the time of return planning. |
| Container Condition | Remaining cargo, contamination, odor, damage, incomplete cleaning | Delivery location, drayage company, shipping line | Post-devanning photos, EIR, cleaning records | Determine whether the condition is cargo-related, pre-existing, or damage during handling. |
| Free Time Awareness | Start date, holidays, combined conditions, or misinterpretation of free days | Freight forwarder, importer, shipping line, NVOCC | Tariff, contracts, quotations, notification emails | Record who confirmed which conditions and when. |
Basic Principles for Organizing Cost Responsibility
The mere issuance of a Detention invoice does not automatically determine the final party responsible for the charges.
When organizing cost responsibility, at minimum, the following points should be confirmed:
- Who is designated as the billed party under the shipping line’s or NVOCC’s contract
- Who was responsible for confirming the applicable Free Time and return conditions
- Who handled the return schedule, delivery appointments, devanning, and vehicle dispatch
- When the cause of the delay occurred and when it was notified to relevant parties
- Whether any party could have avoided or mitigated the cause
- Whether there were circumstances beyond the control of the parties, such as changes to the return location or inability to secure a reservation
- Whether the quotation, transportation contract, purchase order, or clause includes provisions for bearing additional charges
The addressee on the invoice reflects the external payment relationship with the shipping line or NVOCC. Meanwhile, the final cost responsibility among the importer, delivery destination, freight forwarder, and drayage company should be separately organized based on the cause of the delay, contracts, and instruction details.
Practical Scenarios and Distinction of Cost Responsibilities
| Scenario | Fact Occurred | Documents to Check | Viewpoint for Organizing Cost Responsibility |
|---|---|---|---|
| Delivery could not be accepted because no acceptance slot was available at the delivery destination; devanning was postponed to the next business day | After CY gate-out, the delivery destination could not accept the cargo on the same day due to its operational circumstances | Delivery reservation, acceptance confirmation, delivery instructions, emails | Confirm whether this was due to circumstances at the delivery destination or on the importer side, or whether it resulted from a missed reservation confirmation. |
| Devanning operation prolonged, exceeding return reception time | Could not return container on the same day due to cargo volume or work organization | Work start/end times, waiting records, photos | Confirm whether the work time could have been anticipated and whether the work arrangement was insufficient. |
| Could not secure a reservation slot for container return | Container devanned but no booking slot was available at the return depot | Reservation screen, reservation operation time, alternative depot information | Confirm the timing of reservation start, availability of other return slots, and force majeure aspects. |
| Container was mistakenly returned to a wrong depot | Transported to a location different from the specified return depot and could not return within the deadline | Return instructions, vehicle dispatch orders, driver daily reports, emails | Confirm whether the error was due to incorrect instructions, communication failure, or driver misunderstanding. |
| Return destination was changed on the day | Additional transport was needed due to instruction changes from the shipping line or others | Change notifications, receipt time, transport records | Confirm whether timely return was possible after receiving the change notice. |
| Empty container was rejected upon return due to contamination | Attempted return but cleaning or additional measures were requested | Photos at return, post-devanning photos, Equipment Interchange Report (EIR), cleaning instructions | Confirm whether contamination was cargo-related, pre-existing damage, or responsibility for cleaning. |
Precautions for Dangerous Goods, Reefers, and Special Containers
| Container / Cargo Type | Main Reasons for Stricter Return Conditions | Items to Confirm | Documents to Verify Charges |
|---|---|---|---|
| Dangerous Goods Container | Residual substances, hazardous labels, odors, restrictions on return destination | Cleaning, label removal, leftover cargo, designated return location | Dangerous goods information, photos, cleaning certificates, return instructions |
| Reefer Container | Equipment, power supply, temperature settings, and return facility conditions | Plug-out time, equipment condition, return destination, and acceptance hours | Temperature records, EIR, equipment malfunction logs |
| Open Top / Flat Rack | Restrictions on return depots, vehicles, and loading/unloading equipment | Return depot, chassis, cargo handling reservation | Special container instructions, dispatch records |
| Tank Container | Need to confirm residuals, cleaning, hazard status, and return condition | Cleaning requirements, residual liquid, certificates, designated facility | Cleaning certificates, photos, return receipt records |
| Damaged / Odorous Cargo | May be refused acceptance at return depot | Post-unloading cleaning, leftover cargo, odor confirmation | Photos before and after unloading, cleaning records, EIR |
Special containers may have shorter Free Time than standard Dry Containers or different daily rates. When verifying charges, always confirm that the container type is correctly recorded.
Key Documents to Confirm When Receiving a Detention Claim
| Document | Details to Confirm | Main Purpose |
|---|---|---|
| Detention Invoice | Invoice number, relevant container, period, number of days, daily rate, total amount | This is the primary document for the claim details. |
| B/L and Arrival Notice | Shipment details, container number, carrier, contractual relationships | To cross-check the invoice with the relevant shipment. |
| Free Time Confirmation Documents | Number of free time days, Last Free Date, Separate or Combined free time conditions | To confirm the start date of the chargeable period. |
| Applicable Tariff | Rate tier, daily rate, holidays, container type | To recalculate the claimed amount. |
| CY Gate-Out EIR | Gate-out date and condition of the full container | To verify the date for starting the detention calculation. |
| Delivery Instruction / Dispatch Records | Gate-out date, delivery location, return instructions, responsible personnel | To check task allocation and instructions given. |
| Delivery Reservation / Delivery Receipt | Receipt date and time, arrival date and time, completion of delivery | To confirm any delay at the delivery location. |
| Container Unloading Work Report | Work start and end times, workers involved, equipment used, reasons for delay | To verify the time when the container was emptied. |
| Return Reservation Records | Reservation date and time, reservation number, inability to reserve, alternative slots | To demonstrate return efforts and reservation restrictions. |
| Empty Container Return EIR | Return date and time, return location, container condition | To confirm the end date of the detention period. |
| Photos, Driver Reports, GPS Data | Container condition, waiting time, movements, inability to return | To support the cause of delays and establish the timeline. |
Actions When Disputing a Charge
If there is an error or any point requiring confirmation in the charge details, do not leave it unresolved until the payment deadline. Inquire or raise a dispute using the method specified by the shipping line or NVOCC.
| Reason for Dispute | Main Required Documents | Details to Explain | Points to Note |
|---|---|---|---|
| Incorrect Free Time | Contract, quotation, Free Time confirmation screen | Correct Free Time and Last Free Date | Show evidence specific to the subject transaction, not general Tariff. |
| Incorrect Billing Date | CY gate-out EIR, return EIR | Correct Gate-Out date and Gate-In date | Attach official records, not just screen displays. |
| Incorrect Rate Classification | B/L, container information, Tariff | Correct size, type, and rate tier | Check classifications such as Reefer, Special, etc. |
| Return Reservation Could Not Be Obtained | Reservation screen, operation time, screenshots | Date and time of attempted return and available alternative slots | Submit records from the time, not just later created explanations. |
| Return Location Closed or Changed | Closure notice, change instructions, receipt time | Time period during which return was impossible and alternative measures | Also explain if the issue could have been avoided after the change. |
| Duplicate Billing | Invoices, payment records, House/Master details | Overlapping portion for the same container and period | Confirm it is not a confusion with a different charge category. |
When filing a dispute, record the submission date and time, receipt number, responsible department, and details of any requested additional documents.
Confirm payment method during the dispute, possibility of withholding payment, or handling of uncontested amounts according to the shipping line or NVOCC procedures and contractual terms.
Freight Forwarder's Standard Five Classifications and Involvement in Detention Claims
The following five classifications are not established by law or the entire industry. They serve as an analytical framework in this series to organize the scope of freight forwarders’ involvement.
| Standard Five Classifications | Main Role in Detention Claims | Usual Scope of Involvement | Usual Scope of Non-Involvement | Practical Notes |
|---|---|---|---|---|
| Simple Intermediary | Relay invoices, Free Time information, and responses from related parties | Document forwarding, identifying inquiry contacts, conveying responses | Independent judgment on claim validity or final cost bearer | Distinguish between confirmed facts and parties’ assertions. |
| Cargo Transportation Service Provider | Verify drayage, delivery, and empty container return records | Dispatch, operation records, return records, subcontractor inquiries | Shipping line tariff changes or exemption decisions | Maintain chronological records for self-arranged segments. |
| NVOCC / House B/L Issuer | Organize House-side claims, customer Free Time, and Master-side claims | House B/L, customer invoices, reconciliation with Master Carrier | Final decisions by Master Carrier or return depot | Clearly differentiate House-side and Master-side terms. |
| Door-to-Door Single Contractor | Analyze causes across CY gate-out, delivery, devanning, and return processes | Overall progress management, coordination among parties, collection of cost documents | Customs, shipping line, or delivery destination-specific authority | Separate contractual responsibility from cause parties even under single contract. |
| Agent / Coordinator for Specific Operations | Conduct claim inquiries, confirm return reservations, and submit objection documents | Authorized inquiries, document submission, status confirmation | Unauthorized cost approval, exemption agreements, or settlements | Distinguish inquiry authority from cost approval authority. |
Contracting Carrier and Actual Carrier are concepts indicating contractual or legal positions under the transportation contract and do not replace the Standard Five Classifications in this article.
Actual operations such as devanning, cleaning, inspection, return booking, drayage, and empty container return are work contents separate from the freight forwarder's form of involvement and do not constitute a sixth classification added to the Standard Five.
Cases Commonly Problematic in Practice
| Case | Main Cause | Documents to Check | Key Points for Judgment | Initial Action |
|---|---|---|---|---|
| Invoice Free Time shorter than quotation terms | Individual Free Time not reflected in billing system | Quotation, contract, Free Time screen | Confirm agreed terms for the specific case. | Inquire with shipping line etc. attaching contract documents. |
| Charged for the day after empty container return | Delay in reflecting return record or date discrepancy | Return EIR, Gate-In record, invoice details | Check receipt date and return time. | Submit official return record. |
| Detention occurred due to failure to secure return reservation | Depot congestion or insufficient reservation slots | Reservation screen, operation history, screenshots | Confirm timing of reservation attempt and possibility of alternatives. | Save records of failed reservation and notify early. |
| Unable to return container on the day due to return location change | Return location changed by shipping line etc. | Change notice, operation records, receipt time | Check if on-time return was possible after the change. | Record added distance, time, and alternative instructions. |
| Detention exceeded due to delay in unloading | Issues with workers, equipment, or cargo volume | Work reports, photos, waiting records | Confirm if working time could have been predicted in advance. | Confirm facts with delivery destination and importer. |
| Empty container rejected on return due to contamination | Residual cargo, odor, leakage, or incomplete cleaning | Photos after unloading, return photos, EIR | Confirm reason for contamination and cleaning responsibility. | Confirm cleaning method and re-return timing. |
| Charged reefer fees but container was used as dry | Misperception of container type or applicable conditions | B/L, booking, tariff, invoice | Check category on applicable tariff. | Present contract terms and condition of use. |
| Detention charges appear duplicated between House and Master sides | Difference in charge structure or billing periods between NVOCC and master carrier | House invoice, Master invoice, both tariffs | Confirm if double billing for the same cost or separate contractual charges. | Reconcile periods, charge basis, and contracts with the customer. |
Example 1: When Individual Free Time Is Not Reflected in the Invoice
Assume the quotation terms between the importer and the NVOCC allowed a longer Detention Free Time than the standard conditions.
However, the issued Detention invoice applied the standard Free Time, calculating additional charges from an earlier date than actually agreed.
In this case, simply checking the general tariff is insufficient to prove the invoice error. The individual Free Time specified in the quotation, booking confirmation, email, or contract should be reviewed.
The freight forwarder should compile the agreed number of days, CY gate-out date, the correct Last Free Date, and the actual return date into a list, then recalculate the chargeable days and inquire with the NVOCC.
It is important to keep records of the individual Free Time not only confirmed verbally but also documented for later presentation.
Example 2: Failure to Obtain a Return Appointment
Assume that devanning was completed the day before the Last Free Date, but the booking slots at the designated return depot were fully booked, so it was not possible to secure a return appointment within the deadline.
In this case, simply explaining "was unable to book" does not verify when the booking was attempted or whether alternative time slots or return locations were available.
Save screenshots of the booking screen, operation timestamps, available slots, designated return locations, and communication records with the shipping line.
The evaluation of avoidability differs depending on whether the return appointment was first attempted on the Last Free Date itself or if multiple attempts had been made well in advance without success.
For disputes over claims or cost allocation, records demonstrating the booking efforts at the relevant times are important.
Example 3: When Return Is Not Possible Due to Delay in Devanning at the Delivery Location
Suppose a loaded container was delivered as scheduled, but devanning was postponed to the next day due to a forklift breakdown at the delivery location.
As a result, the empty container return exceeded the Last Free Date, incurring Detention charges.
Items to be confirmed include the scheduled delivery appointment time, actual arrival time, time of the equipment failure, communications from the delivery site, availability of substitute equipment, and the time devanning was completed.
Even if the forklift failure at the delivery location was sudden, Detention charges from the shipping line may not be automatically waived.
It is important to separate external claims from the shipping line and internal cost responsibility between the importer and the delivery location.
Example 4: Additional Days Incurred Due to Change of Return Location
Assume that immediately before heading to the originally designated return depot after devanning, the shipping line notifies a change to return at a different depot.
If the new return location is far, making it impossible to meet the depot’s reception hours on the same day, the return is postponed to the next business day.
In this case, confirm the time of receipt of the change notification, the original return instructions, the distance to the new depot, the depot’s reception hours, the driver’s operation records, and communications with the shipping line.
A change of return location alone does not automatically exempt the full amount of Detention charges, but these details serve as important documentation to explain the causal relationship with the delay and whether it could have been avoided.
Decision Checklist
| Situation for Confirmation | Party to Confirm With | Items to Confirm | Actions if Issues Are Found |
|---|---|---|---|
| Upon Receiving Invoice | Shipping line, NVOCC, Accounting Department | Invoice number, payment deadline, target container, billing period | Check the deadline for objections and begin gathering relevant documents. |
| When Confirming Free Time | Shipping line, NVOCC, Sales Representative | Standard, individual, extension, combined conditions | Secure contract documents related to the case. |
| When Verifying Dates | Terminal, return depot, drayage company | CY gate-out date, last free day, actual return date | Reconfirm using EIR and gate records. |
| When Verifying Charges | Shipping line, NVOCC | Container size, type, rate tier | Recalculate using the correct tariff. |
| When Confirming Delivery Status | Importer, delivery destination, warehouse | Delivery reservation, acceptance, start/end of devanning | Confirm cause and timing of work delays. |
| When Confirming Return Reservation | Drayage company, return depot | Reservation requirements, operation date/time, reservation slots, acceptance hours | Keep records if reservation was not possible. |
| When Confirming Return Location | Shipping line, NVOCC, drayage company | Designated return location, change notification, alternative location | Organize notification time and any additional transport involved. |
| When Checking Container Condition | Delivery destination, drayage company, shipping line | Residual cargo, contamination, odor, damage, and cleaning | Secure photos and EIR documents. |
| When Considering Cost Allocation | Importer, delivery destination, related parties | Cause of delay, contracts, instructions, avoidability | Separate the billing party and the final cost bearer clearly. |
| When Filing an Objection | Shipping line, NVOCC | Submission deadline, objection method, required documents | Save receipt records and submitted documents. |
Common Misunderstandings
| Misunderstanding | Actual Understanding | Practical Notes |
|---|---|---|
| Container charges end once the container is gate-out from the CY | Detention management generally continues until the empty container is returned. | Manage delivery, devanning, and return as an integrated process. |
| Demurrage and Detention are the same charge | They usually apply to different periods and have different end records. | Confirm whether combined terms apply. |
| The invoice addressee is always the final party responsible for the cost | The external billed party and internal cost bearer may differ. | Separate contract terms from the cause of delay during confirmation. |
| Returning the container to the depot by the deadline means it’s returned on time | The key point is normally when the container is acknowledged at the designated return location. | Check the return EIR or Gate-In record. |
| Saturdays, Sundays, and holidays are always excluded from Free Time calculations | The treatment of holidays depends on the shipping line, contract, and time period category. | Confirm calculation methods separately for within Free Time and after exceeding Free Time. |
| Free Time for the case can be understood from the general Tariff | Individual contracts or extensions to Free Time may apply. | Check the Last Free Date for the specific container. |
| If return reservations cannot be made, Detention is automatically waived | Waiver or adjustment depends on conditions, evidence, and case-by-case judgment. | Save the date/time and screen of the reservation operation. |
| Detention is always the importer’s responsibility | The cause could be the delivery destination, freight forwarder, drayage company, or return conditions. | Identify the party that had control over the cause. |
| Returning the empty container means any contamination or damage is not a problem | Rejection of receipt, cleaning fees, or repair costs may still occur. | Document the container condition after devanning. |
| If there are doubts about the invoice, payment can be withheld | The dispute deadline, payment deadline, and prescribed claim procedures should be confirmed. | Promptly inquire with supporting documents. |
Situations Requiring Confirmation with Experts or Relevant Parties
| Situation | Main Parties to Confirm With | Reason for Confirmation | Documents to Prepare |
|---|---|---|---|
| Applicable Free Time or Tariff is unclear | shipping line, NVOCC | To finalize contract terms for the case in question | B/L, booking, quotation, invoice |
| Billing relationship between House and Master side is unclear | NVOCC, Master Carrier, contract manager | To clarify billing period and basis for charges | House B/L, Master B/L, both invoices |
| Return record or return location is unclear | return depot, drayage company, shipping line | To confirm actual return date/time and designated return location | EIR, daily vehicle report, return instructions |
| Return conditions for special containers are unclear | shipping line, return depot, specialized drayage company | To verify cleaning, equipment, dangerous goods, and return facilities | container specifications, dangerous goods information, photos |
| High-value claim or dispute over contractual responsibility | contract manager, maritime lawyer, involved parties | To organize contractual billing and final cost liability | transport contract, clause, timeline, emails, billing documents |
| Cargo damage occurs simultaneously | cargo insurance company, insurance agent, surveyor, carrier | To separate cargo damage from detention and other additional charges | insurance policy, photos, EIR, damage documentation, invoices |
Summary
When receiving a Detention charge, it is necessary to verify not only the amount charged but also the relevant container, applicable Free Time, Last Free Date, CY gate-out date, and empty container return date.
- Detention primarily covers excess charges from CY gate-out until the return of the empty container.
- First, confirm whether Demurrage and Detention are separate or combined under the applicable terms.
- Check the individual Free Time applied to the specific case rather than the general tariff.
- The chargeable days should be recalculated based on the Last Free Date, actual return date, and handling of holidays.
- Verify the charge amount by matching the container size, type, and the applicable tiered rate classification.
- The confirmed return completion date should be based on recorded receipt at the designated return location, not on the departure date for return.
- Causes of return delays should be checked separately by delivery destination, devanning, return reservation, return location, drayage, and container condition.
- Separate the named invoice recipient from the final party responsible for bearing the costs.
- If there are disputes, inquiries should be made within the objection deadline, attaching Free Time documents, EIR, reservation records, etc.
- For dangerous goods, Reefers, and special containers, confirm Free Time or return conditions that may differ from standard containers.
- It is important for freight forwarders to keep records from before CY gate-out through delivery, devanning, return reservation, and completion of return.
