False Declaration of Container Weights (VGM Issue) and Accident Risks
Interlink編集部What is False Declaration of Container Weight (VGM Issue)?
VGM (Verified Gross Mass) refers to the confirmed total weight of a container for international maritime export, finalized before shipment.
The container's total weight includes not only the weight of the cargo itself but also the weight of packing materials, pallets, lashing materials, dunnage, securing materials, and the container's own tare weight.
The VGM issue arises when the declared container weight differs from the actual weight, causing problems with shipment, cargo handling, stowage, transportation safety, and accident response.
False or inaccurate weight declarations are not merely paperwork errors. They represent significant risks affecting vessel stowage planning, terminal operations, container stability, cargo handling safety, liability determination in incidents, and practical operations of cargo insurance and liability insurance.
Scope Covered in This Article
| Scope | Contents Covered in This Article | Contents to Verify Separately |
|---|---|---|
| Basics of VGM | Organized as the confirmed total container weight before shipment of international maritime export containers. | Check official sources for SOLAS Convention texts, detailed domestic regulations, and the latest reporting and registration procedures. |
| What is Included in Weight | Explanation of total weight including cargo weight, packing materials, pallets, lashing materials, dunnage, and container tare weight. | Individual cargo weight calculation methods, accuracy of weighing equipment, and internal weighing procedures should be checked case by case. |
| Methods to Confirm Weight | Outline of methods: weighing the entire container or aggregating cargo, packing materials, and container tare weight. | Which methods are accepted, and who confirms the weight should be checked based on regulations, contracts, and outsourcing conditions. |
| Risks of False or Incorrect Declarations | Summary of shipment rejection, cargo handling accidents, disrupted stowage planning, container loss, and post-accident claims. | Specific accident causes, allocation of responsibility, and damage compensation amounts require individual accident investigations. |
| Relation to Insurance | Clarifies cargo insurance, liability insurance, subrogation, and scenarios where weight misdeclaration becomes an issue in insurance practice. | Payment eligibility, deductibles, and subrogation policies should be confirmed with insurance companies and agents. |
| Freight Forwarders and NVOCC Involvement | Differentiates whether they are the weight definitive party or merely transmitting shipper information, emphasizing the importance of record keeping. | Scope of entrusted weight confirmation services, necessity of registration/reporting, and contractual liability must be confirmed individually. |
| Post-Accident Response | Addresses handling of VGM declaration records, basis for weight, transmission history to shipping companies, insurance notifications, and liability allocation. | Definitive conclusions on accident causes or legal liability should be confirmed with shipping companies, insurers, lawyers, and surveyors. |
What is VGM?
VGM is information used to confirm and submit the total weight of a container to the shipping company or terminal before loading.
Shipping companies use VGM to plan vessel stowage. If the weight is inconsistent with reality, it may negatively affect ship weight balance, container stacking, lashing, and vessel stability.
Therefore, VGM is not just a customs or logistics document; it directly relates to vessel safety and prevention of cargo accidents.
To handle VGM accurately, it is important to distinguish between cargo weight and total container weight. Simply looking at the cargo weight on the packing list may overlook container tare weight or packing material weight.
Legal Basis
The VGM system was introduced as an international safety rule through amendments to the SOLAS Convention.
This followed concerns about cargo shifts, container losses, vessel accidents, and cargo handling incidents likely caused by container weight misdeclaration.
In Japan, a system is in place requiring reporting or registration with the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) to confirm total container weight for international maritime export containers.
If the shipper confirms the container weight themselves, notification to the MLIT Minister is required. Conversely, if the container weight confirmation is conducted as a business entrusted by the shipper, registration with the MLIT Minister is required.
Therefore, when dealing with VGM, it is important to clarify who confirms the weight, whether it is merely providing information, or whether weight confirmation services are being contracted.
Weights Confirmed by VGM
VGM confirms not only the cargo weight but the container's entire total weight.
| Weight Item | Meaning | Reference Documents | Practical Notes |
|---|---|---|---|
| Cargo Body Weight | The weight of the product itself. | Packing list, weight details, shipping instructions | Do not mistake cargo weight alone for VGM. |
| Packing Material Weight | Weight of wooden boxes, cartons, films, cushioning materials, etc. | Packing specifications, packing company data, on-site records | In the case of heavy cargo or wooden crate packing, weight differences can be significant. |
| Weight of Pallets/Skids | Weight of pallets, skids, wooden frames used to support cargo. | Packing details, photos of actual items, warehouse records | Wooden pallets and skids often cause weight differences. |
| Weight of Lashing Materials and Dunnage | Weight of cargo securing materials such as blocking, bracing, dunnage boards, belts, and fasteners. | Vanning records, lashing details, work photos | Additional securing materials added on-site are easily overlooked. |
| Container Tare Weight | The weight of the container itself. | Container markings, EIR (Equipment Interchange Receipt), container information | When using the aggregation method, this must always be included. |
| Total Container Weight | Weight including cargo, packing materials, securing materials, and container tare weight. | Weighing records, VGM declaration forms, VGM submission records | The VGM submitted to the shipping company is this total weight. |
Methods to Confirm VGM
There are two main methods for determining VGM: weighing the entire container as a whole, or calculating the total by summing the weights of cargo, packing materials, and the container’s tare weight.
In either method, the weight must be established based on verifiable grounds that can be explained in actual logistics practice—not on estimates or rough approximations.
Comparison Table: Differences Between Container Weighing and Calculation Methods
| Category | Method Overview | Advantages | Common Issues | Practical Measures |
|---|---|---|---|---|
| Weighing the entire container | Measure the container loaded with cargo using a scale and confirm the total weight. | Allows direct confirmation of total container weight, making it easier to grasp an accurate weight close to actual conditions. | Requires securing location, scales, handling routes, and timing for weighing. | Keep weighing records, weighing date/time, and container number on file. |
| Calculation method | Add the weights of cargo, packing materials, pallets, securing materials, etc., plus the container tare weight to calculate the total. | Can be calculated based on documented data even when the entire container cannot be weighed. | Risk of omissions such as packing materials, dunnage, and container tare weight in the total. | Record the calculation basis, weight data used, and container tare weight. |
| Using packing list weight directly | Use the cargo weight listed on the packing list as the VGM without adjustment. | Appears simpler for administrative processing. | Does not include container tare or packing materials, potentially causing inaccurate VGM. | Check for differences between cargo weight and VGM, and avoid simple reuse. |
| On-site estimate | Declare weight based on past experience or rough approximations. | May seem quicker to process. | Lacks basis and carries risk of being unable to explain in the event of an accident. | Use weighing records or calculation basis instead of estimates. |
Why False Weight Declaration Causes Problems
False weight declarations for containers cause issues not only in pre-shipment administrative processing but also increase actual accident risks.
If a container declared lighter than actual is stacked in upper tiers, it may affect the shipboard stowage balance and lashing.
Additionally, containers exceeding expected weight limits for handling equipment, chassis, trailers, and cranes may cause handling accidents or incidents during land transportation.
Weight inaccuracies complicate responsibility relationships among shipping companies, terminals, freight forwarders, NVOCCs, shippers, and carriers.
Main Situations Where Weight Misdeclaration Impacts
| Situation | Possible Problems | Stakeholders | Checks to Be Made |
|---|---|---|---|
| Before shipment | Shipment may be held or not allowed due to VGM non-submission or deficiencies. | Shippers, freight forwarders, NVOCC, shipping companies, terminals | Confirm VGM submission deadlines, submission formats, container numbers, and booking numbers. |
| At CY (Container Yard) delivery | Large discrepancies between declared and actual weights require verification or re-weighing. | Terminals, drayage companies, shipping companies, shippers | Cross-check weighing records, delivery records, and submitted VGM values. |
| Ship stowage planning | Affects weight balance, stacking plans, and lashing designs. | Shipping companies, terminals, vessel operators | Verify that accurate VGM has been submitted to the shipping company. |
| Handling operations | Risk of exceeding allowable weights for cranes, chassis, and trailers. | Terminals, port workers, drayage companies | Check for overweight, uneven load distribution, and presence of dangerous goods. |
| During voyage | Misstowage risks such as cargo shift, stack collapse, container loss, and damage to other cargo. | Shipping companies, shippers, NVOCC, insurers | Post-incident comparison of VGM declaration and actual container weights may be conducted. |
| Post-accident | Weight misdeclaration may be a cause of the accident, contribute to damage extent, cause claims, or become an insurance issue. | Insurers, lawyers, surveyors, shipping companies, shippers | Confirm through records who determined the weight and who submitted it. |
Relationship With Insurance
False or inaccurate VGM declarations affect the practical handling of both marine cargo insurance and liability insurance.
In marine cargo insurance, if the accident is an unforeseen external event, damages may be covered. However, if an investigation reveals that the shipper’s false or inaccurate weight declaration contributed to the cause, damage escalation, or claims, questions arise in liability and coverage.
For example, if the shipper declares a weight lighter than actual and that information affects stowage, cargo handling, or land transportation decisions which lead to an accident, the insurer, carrier, shipping company, or terminal operator may make claims against the shipper.
Whether the freight forwarder or NVOCC merely passed on weight information received from the shipper or was contracted to determine the weight significantly affects liability.
If the freight forwarder was engaged to determine the weight and an incorrect VGM affected shipment or caused an accident, this may become a liability insurance issue for the forwarder. Therefore, clearly defining scope of work, contract terms, and preserving records is important.
In other words, VGM issues are not just about “who made the weight mistake,” but also about who confirmed the weight, who submitted the data to the shipping company, and based on which documents these actions were taken—these factors are critical in the insurance response.
Freight Forwarder and NVOCC Involvement Scope
| Scenario | What Support Can Be Provided | What Should Not Be Conclusively Determined | Practical Measures |
|---|---|---|---|
| When receiving weight information from the shipper | Can verify the consistency of the packing list, VGM declared value, container number, and Booking number. | The authenticity of the shipper's declared weight should not be unconditionally guaranteed. | Record receipt date and time, received documents, and transmission history. |
| When sending VGM to the shipping company | Can convey the VGM received from the shipper in the shipping company's specified format. | If not contracted to finalize the weight, one should not represent oneself as the entity confirming the weight. | Clearly define whether your role is that of information transmitter or weight confirmer. |
| When there is an unnatural weight discrepancy | Can prompt the shipper to confirm whether cargo weight, packaging materials, or container tare weight have been omitted. | Should not revise and submit figures based on independent judgment. | Confirm with the shipper and keep a record of any correction instructions. |
| When entrusted with weight confirmation tasks | May perform weight confirmation tasks based on system registration and management framework. | Should not operate as the weight confirmer without registration, framework, or contractual terms. | Confirm registration, outsourcing contracts, weighing records, and internal procedures. |
| When shipment rejection or hold occurs | Can coordinate the details of deficiencies, re-weighing, correction submissions, and arrangements for the next vessel. | Should not rush to decide on additional charges or liability for delays. | Confirm the cause of deficiencies, responsibility scope, and cost allocation among involved parties. |
| When weight misdeclaration is suspected after an incident | Can organize the weight information from the shipper, records of VGM submission, and transmission history to the shipping company. | Should not immediately conclude that weight misdeclaration caused the incident. | Share the documentation with insurance companies, the shipping company, and surveyors. |
Risks on the NVOCC and Shipping Company Side
NVOCCs and shipping companies decide on shipment approval and stowage plans based on the submitted VGM.
If weight information is inaccurate, it may cause shipment delays, changes to stowage plans, impacts on other cargo, cargo handling accidents, or vessel accidents.
When the NVOCC issues House B/L, there are instances where they bear contractual transport responsibility towards the shipper.
Therefore, it is important for the NVOCC to retain the weight information received from the shipper, records of VGM submission, and transmission logs to the shipping company.
Practical Workflow
- The shipper verifies cargo weight, packaging type, and container loading conditions.
- Confirm weights of container tare, packaging materials, pallets, lashing materials, and dunnage.
- Determine the total container weight by either full container weighing or calculation method.
- Confirm who the weight confirmer is—shipper or registered weight confirmer.
- Verify VGM declared value, container number, Booking number, vessel name, and voyage number.
- Submit the VGM within the deadline to the shipping company, NVOCC, freight forwarder, terminal, or other relevant parties.
- Preserve records of VGM submission, transmission logs, weighing records, and calculation basis.
- If corrections are needed after submission, promptly make corrections using the shipping company’s designated method.
- If shipment hold or weight discrepancies occur, clarify deficiency causes, additional costs, and arrangements for the next vessel.
- In case of an incident, prepare to provide VGM declaration records, weight basis, and submission logs to insurance companies and related parties.
Common Practical Issues
| Case | What Becomes an Issue | Documents to Check | Practical Response |
|---|---|---|---|
| Only cargo weight was submitted as VGM | Container tare weight, packing materials, pallets, and securing materials are excluded, resulting in a declaration lighter than the actual weight. | Packing List, VGM Declaration Form, Container Tare Weight, Packing Details | Confirm that VGM is the total container weight and recalculate accordingly. |
| Packing material weight was overlooked in cumulative calculation | Weight of wooden crates, pallets, dunnage, and lashing materials is not reflected. | Packing Specification Sheet, Vanning Photos, Work Records | Obtain weight basis from packing company or warehouse. |
| Container tare weight was not added | VGM is not the total container weight, but only the cargo and packing weight. | Container Markings, EIR, VGM Calculation Sheet | Correct to the total weight including container tare weight. |
| Weight discrepancy discovered after CY delivery | Shipment hold, re-weighing, additional costs, and schedule delays may occur. | CY delivery records, terminal weighing records, VGM submission records | Check with the shipping company whether correction is allowed and confirm cost liability with the shipper. |
| Incorrect weight declaration discovered after an accident | Causality with cargo collapse, stack failure, container loss, or damage to other cargo becomes an issue. | VGM declaration records, weight certificates, accident investigation documents, Survey Report | Do not definitively conclude accident causes; share evidence with the insurance company and shipping company. |
| Freight forwarder misunderstood as the party confirming weight | Whether the forwarder was merely an information transmitter or formally commissioned for weight confirmation becomes a point of dispute. | Service Agreement, Email History, VGM Submission Records, Internal Processing Records | Clearly define the scope of work and responsibility in writing. |
| Declaration was inaccurate for heavy or unevenly loaded cargo | Affects cargo handling safety, lashing, chassis transport, and stowage planning. | Weight Details, Center of Gravity Information, Stowage Plan, Lashing Instructions | Confirm not only weight but also uneven loading and securing methods. |
| VGM submission deadline was missed | Shipment may be refused, moved to the next vessel, storage fees, Demurrage, and Detention could be incurred. | Cut-off Date, VGM Deadline, Shipping Company Notices, Transmission Records | Confirm submission deadlines at booking and set internal deadlines earlier than official ones. |
Documents to Check
| Document / Record | Contents to Confirm | Purpose in Practice |
|---|---|---|
| Packing List | Cargo weight, packing quantity, total weight, NET/GROSS distinction | Ensure cargo weight and VGM are not confused. |
| Commercial Invoice | Cargo description, quantity, value, presence of weight details | Confirm consistency between cargo details and weight information. |
| Booking Confirmation | Booking number, vessel name, voyage number, VGM submission deadline | Check submission deadline and applicable containers. |
| VGM Declaration Form or Submission Record | Declared weight, submitter, submission date/time, target container number | Keep evidence of who submitted what. |
| Container Number Record | Container number linked to VGM | Prevent incorrect transmission or mix-up with other containers. |
| B/L or Sea Waybill | Cargo details, container number, presence of weight, shipper/consignee | Check relationship between transport document weight and VGM. |
| CY Delivery Records | Delivery date/time, container number, handling at terminal | Confirm shipment eligibility and timing of weight discrepancy discovery. |
| Weighing Records or Weight Calculation Basis | Weighing date/time, location, calculation breakdown, container tare weight | To explain VGM basis after an accident. |
| Cargo Insurance Policy & Liability Insurance Documents | Policy conditions, accident notification contacts, deductibles, recourse handling | Check insurance coverage and response at the time of accidents. |
4-Column Decision Checklist
| Checkpoint | Party to Confirm With | Items to Confirm | Actions If Issues Arise |
|---|---|---|---|
| At Booking | Shipping Line, NVOCC, Shipper | VGM submission deadline, submission method, applicable containers, cut-off date | Advise advancing internal deadlines to prevent late submission. |
| At receipt of weight info | Shipper, Packing Company, Warehouse | Cargo weight, packing material weight, container tare weight, distinctions of gross weight | Do not use cargo weight alone as VGM; request confirmation. |
| When VGM is finalized | Shipper, Authorized Registration Entity, Weighing Personnel | Weighing method, calculation method, basis of calculation, weighing records | Confirm unclear grounds before submission. |
| When submitting to shipping line | Freight Forwarder, NVOCC, Shipping Line | Container number, Booking number, vessel name, declared weight | Check for mistaken transmission to wrong container or digit errors. |
| When weight discrepancy is suspected | Shipper, Warehouse, Terminal, Shipping Line | Measured weight, declared weight, reason for difference, need for re-weighing | Confirm correction submission, reweighing, and ship loading feasibility. |
| When shipment is on hold | Shipping Line, Terminal, Shipper | Reason for hold, resubmission deadline, additional costs, feasibility for next vessel | Sort out cost responsibility and schedule impact. |
| When accident occurs | Insurance Company, Shipping Line, Shipper, Surveyor | VGM submission records, basis of weight, actual weight, relation to accident cause | Preserve evidence without assigning responsibility prematurely. |
| When confirming forwarder involvement | Shipper, Freight Forwarder, NVOCC | Whether they transmitted info, whether they finalized weight, scope of commission | Clarify roles through contracts, emails, submission records. |
Practical Scenario 1: Case where only cargo weight was submitted as VGM
A shipper submitted only the cargo weight from the packing list as the VGM, excluding the container tare weight and packaging materials.
In this case, the actual total container weight is heavier than the declared value. The shipping line creates the stowage plan based on incorrect weight information, which could affect weight balance onboard and cargo handling safety.
Here, the shipper should have understood that VGM means the container gross weight, not just cargo weight, and confirmed the basis of weighing or calculation before submission. Freight forwarders and NVOCCs are encouraged to prompt shippers for confirmation if the container tare weight is clearly missing from the declared weight.
Practical Scenario 2: Shipment halted due to weight misdeclaration
After CY delivery, a significant discrepancy between the submitted VGM and actual measured weight is discovered, leading the shipping line or terminal to withhold loading.
This can cause shipment delays, schedule changes, additional storage fees, reweighing costs, and delivery delays to customers.
In this case, shippers and freight forwarders should have confirmed VGM submission deadlines, weighing methods, and weighing records before CY delivery. After shipment is withheld, avoid immediately assigning responsibility and clarify who submitted what weight data, the possibility of correction, and which party incurred additional costs.
Practical Scenario 3: Weight misdeclaration becomes an issue after an accident
During maritime transport, container cargo shifting or damage to other goods occurs, and accident investigation reveals a notable difference between declared and actual weights.
In this case, the issue is not just a cargo accident, but false or inaccurate weight declaration could be a contributing factor to the accident.
In insurance claims, declared weight details, weighing basis, forwarder involvement, and shipper explanations may be reviewed. In this scenario, shippers should have submitted accurate weight information, and forwarders should have retained records of received and transmitted weight data.
Practical Scenario 4: Forwarder misunderstood as the party finalizing the weight
A forwarder merely transmitted VGM information received from the shipper to the shipping line, but after an incident they are mistakenly regarded as having finalized the weight.
Here, the dispute centers on whether the forwarder was only an information transmitter or had been contracted to finalize the weight. Email texts, applications, service contracts, VGM submission screens, and invoices are checked.
In practice, it is important for forwarders not in the position of guaranteeing weight accuracy to clearly state this position. Conversely, if accepting contracts for weight finalization services as a business, necessary registrations, internal control systems, weighing records, and contract terms must be established.
Common Misunderstandings
| Misconception | Correct Understanding | Practical Considerations |
|---|---|---|
| VGM refers to cargo weight | VGM is not just cargo weight, but the total container weight including tare weight and packing materials. | Do not directly use packing list weights as VGM. |
| Packing list Gross Weight and VGM are always the same | Packing list Gross Weight often reflects cargo packing weight and may not include container tare weight. | Confirm the meaning of Gross Weight on the documents. |
| Small weight differences are not a safety issue | Weight differences can affect stowage planning, cargo handling safety, lashing, and vessel stability. | Be especially careful with heavy or unevenly loaded cargo. |
| If sent to the forwarder, the forwarder guarantees the weight | Forwarders often act as information transmitters and may not be the party confirming the weight. | Clearly define the scope of work and keep records of receipt and transmission. |
| VGM is just a pre-shipment administrative procedure | After an accident, false weight declarations may become a cause or point of dispute in claims. | Keep records even after submission. |
| Container tare weight is automatically added by the shipping company | If using the combination method to calculate VGM, total weight must include container tare weight clearly. | Confirm who calculates this and by which method. |
| Incorrect weight declarations have no relation to insurance | If related to cause of an accident or loss extension, insurers and carriers may seek reimbursement. | Retain basis for weight data to explain after incidents. |
| VGM cannot be corrected after submission | Depending on deadlines and carrier policies, corrections may be possible; prompt confirmation is needed if required. | Check with the shipping company about correction possibilities, deadlines, and shipment impacts. |
Important Notes
It is crucial not to confuse cargo weight and total container weight when dealing with VGM.
The weight shown on the packing list does not necessarily equal the VGM. The total weight must include packing materials, pallets, lashing equipment, dunnage, and container tare weight.
Errors in weight information can cause not only shipment delays but also affect responsibility determinations if an accident occurs.
When discrepancies in weight declarations come to light after an accident, it often becomes an issue who among the shipper, forwarder, NVOCC, carrier, or terminal provided incorrect information.
Extra caution is needed when confirming weights for heavy cargo, machinery, metal products, liquid cargo, large items, or cargo prone to uneven loading.
Summary
VGM is essential as total container weight information needed for the safe loading and transport of internationally exported maritime containers.
VGM issues are not simple data entry errors but practical risks impacting shipment, cargo handling, stowage, accident response, and insurance procedures.
Shippers need to distinguish between cargo weight and total container weight, and submit accurate VGM.
Forwarders and NVOCCs should clarify whether they act as the weight confirmer or merely as information transmitters, and keep records of VGM submissions, shipper instructions, and transmissions to carriers.
False or inaccurate weight declarations can lead to shipment refusals, additional costs, liability claims in accidents, and insurance disputes, so establishing a verification system before shipment is essential.
