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Container Weighing: VGM and SOLAS Requirements Explained

By ANKPOST Operations Team · 2026-06-12

What is VGM and why is it required?

Verified Gross Mass (VGM) is the total weight of a packed container (cargo plus packing materials plus tare weight) that shippers must submit to the carrier before loading, under SOLAS amendments adopted to prevent vessel stability incidents caused by mis-declared container weights. Independent dispatch data indicates that VGM submission cutoffs at West Coast export terminals are typically set 24-48 hours before vessel cut-off, and containers without a verified VGM on file are routinely held off the load list — field-level tracking shows this is a recurring cause of last-minute rolled bookings during peak shipping weeks.

In this article

Cost structure / standard tiers

VGM can be obtained through two SOLAS-approved methods, each with different cost implications.

Method Description Typical Cost
Method 1 (weighbridge) Weigh the packed container on a certified scale $25-75 per container
Method 2 (calculated) Sum verified cargo weight + packaging + container tare weight No direct fee, but requires a certified weighing process for components
Late VGM submission fee Carrier-assessed for filings after cutoff $50-150 per container
VGM-related booking rollover Container missed load due to no VGM Full rollover delay (next available vessel, often 1-2 weeks)
Re-weighing after discrepancy flag Terminal-requested re-weigh $50-100

The container tare weight (stenciled on the door) must be added to cargo weight for Method 2 calculations and is a common source of error if omitted.

Risk mitigation / operational guidance

Submit VGM well ahead of the carrier's stated cutoff — same-day submissions are the most common cause of missed load lists, and the cost of a rolled booking (1-2 week delay) far exceeds any weighing fee. If using Method 2, maintain a documented weighing process for cargo and packaging components, since this method requires the shipper's process to meet the flag state's certification standard. Always confirm the container's tare weight from the door stencil rather than assuming a standard figure, as tare weights vary by container age and type. Build VGM submission into the booking checklist as a discrete step with its own deadline, separate from documentation cutoffs — overweight containers also may require special drayage permits depending on state highway weight regulations, so accurate weight communicated early helps drayage providers plan appropriately.

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