In response to increasing concerns over accidents caused by misdeclared container weights, the International Maritime Organization (IMO) established the Verified Gross Mass (VGM) requirement as a global standard for safer shipping.
Safety at sea has always been a priority – for crews onboard and for those entrusting their valuable cargo to ocean freight.
One regulation that has reshaped global shipping since 2016 is the Verified Gross Mass (VGM). Introduced to protect vessels, cargo, and human lives, this requirement remains a core obligation in maritime logistics today.
What Is VGM In Shipping?
VGM (Verified Gross Mass) refers to the documented weight of a packed container. It includes the weight of all goods, packaging, and the container itself. The International Maritime Organization (IMO), under the Safety of Life at Sea (SOLAS) Convention, made VGM mandatory worldwide on July 1, 2016. From then on, no container can be loaded on a vessel without a verified weight declaration.
Why Verified Gross Mass Is So Important
Before VGM became law, container weight misdeclarations were a serious hazard. Ships faced instability, stacks of containers collapsed, equipment broke, and tragically, lives were lost.
Every year, roughly 1,500 containers are lost at sea, and in many cases, inaccurate weight reporting plays a part.
Why Do You Need To Report Verified Gross Mass?
Reporting VGM is not only a legal obligation – it is a safeguard for smoother and safer transport.
- Higher Safety Onboard: Knowing the real weight prevents overloading, ensures stability in rough seas, and reduces the risk of accidents during loading or unloading.
- Operational Efficiency: Accurate declarations help carriers and terminal operators plan and execute loading operations more efficiently, minimizing delays, optimizing vessel capacity, and reducing the risk of cargo damage.
- Regulatory Compliance: Submitting VGM ensures you remain compliant with international rules, avoiding fines or the refusal of your container.
- Preventing Delays: Carriers simply won’t load containers without VGM.
When VGM Miscalculations Lead To Costly Consequences – A Real Life Example
In early 2024, the U.S.-flagged vessel President Eisenhower experienced a serious incident caused by incorrect VGM declarations. What happened was that a booking agent entered weights of 2.5 tonnes instead of the actual 25–29 tonnes for several containers.
The wrong data led to faulty loading, and the result was severe: 23 containers overboard, 10 damaged, and losses exceeding $700,000. Costly incidents like this highlight exactly why VGM accuracy is non-negotiable.
Who Is Responsible For Submitting Verified Gross Mass?
Under SOLAS rules, the shipper identified on the Bill of Lading is legally responsible for providing the Verified Gross Mass for a loaded container.
This responsibility can extend to the exporter, importer, freight forwarder, or Non-Vessel Operating Common Carrier (NVOCC) listed as the shipper who is not necessarily the party physically packing or weighing the container, but rather the entity named in the shipping documentation.
However, in practice, identifying the exact responsible party can be complex due to the varied nature of shipping contracts and cargo ownership. As a result, all parties involved must coordinate closely to ensure accurate VGM submission.
How Do You Calculate The Verified Gross Mass?
SOLAS provides two approved methods:
Method 1: Weighing The Packed Container
The entire sealed container is weighed on certified equipment such as a weighbridge or lifting scale. If weighed on a truck, the vehicle’s own weight and fuel are subtracted.
Some freight forwarders or agents charge a fee – usually $50 to $100 – for handling this service.
Method 2: Adding Up All Individual Weights
Every item for the container is weighed separately: cargo, pallets, packaging, and dunnage. Then, the tare weight of the empty container (stated on its door or CSC plate) is added.
This method is only valid when performed by a certified and approved party in the country of packing.
For bulk goods, Method 1 is generally simpler and more precise. Regardless of method, certified equipment, detailed records, and careful checks are key to reliable results.
When And How Do You Report Verified Gross Mass?
Once calculated, the VGM must be submitted before loading. Carriers and port terminals provide strict deadlines, and missing them means your cargo will not be shipped.
There are different ways you can report your shipment’s VGM:
- As part of the regular shipping instructions
- Directly to the carrier through online platforms or EDI systems
- Via a freight forwarder or 3PL
- Through specialized digital shipping platforms
What Happens If You Don’t Report Verified Gross Mass?
Containers without a submitted VGM are not allowed onboard. Missing the deadline leads to delays, storage and demurrage fees, possible re-packing costs, and even cancelled shipments.
What Happens If You Report It Inaccurately?
Submitting a wrong VGM is a breach of maritime law – and a major risk. Inaccurate weights can destabilize ships, cause collapses, damage cargo, and endanger lives. Overloaded or falsely declared containers are often rejected outright.
Furthermore, inaccurate reporting can lead to regulatory fines and penalties. In the United States, the Coast Guard enforces compliance, showing the seriousness of the requirement worldwide.
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