Tuna traceability is hard to get right because the supply chain spans multiple oceans, dozens of vessels, transshipment points, processing facilities, and regulatory jurisdictions before a product reaches a retailer’s shelf. Certifications help set standards, but they often verify a snapshot in time rather than continuous chain-of-custody data. Without first-mile digital verification, gaps in documentation could allow IUU catch or mislabeled product to enter even certified supply chains undetected. A digital product passport approach changes that by linking verifiable data to every batch from the moment of catch.
Relying on paper-based documentation is putting your brand at risk
Most seafood supply chains still depend heavily on manual documentation—paper catch certificates, PDF discharge records, and spreadsheets re-entered at every handoff. Each manual step introduces the risk of transcription errors, missing records, or outright fraud. The fix is not more paperwork but a shift to digital, source-level data capture that records events as they happen and automatically propagates that information downstream.
Starting traceability at processing is leaving your biggest risk unaddressed
Many companies invest in robust processing-stage traceability systems and assume they have the supply chain covered. But the highest-risk events happen before the fish ever reaches a processing plant: at sea, during transshipment, and at port discharge. If traceability only begins post-processing, everything before that point relies on documentation that may be incomplete, inaccurate, or unverifiable. Addressing this means moving data collection back to the first mile.
Why is tuna traceability so much harder than other food supply chains?
Tuna supply chains begin in remote ocean locations, involve multiple vessel transfers at sea, and cross many national jurisdictions before reaching port. A typical journey might involve a fishing vessel catching skipjack in the Western Pacific, transferring catch to a carrier vessel at sea, offloading in a third country, processing in a fourth, and reaching a retailer in Europe or the US. Each handoff is a potential data gap, and each jurisdiction adds its own documentation requirements that are rarely interoperable. Land-based food supply chains, by contrast, operate through fixed facilities with established audit trails and shorter geographic distances.
What do seafood certifications actually verify—and what do they miss?
Certifications such as MSC or ASC verify that a fishery or facility meets defined standards at the time of assessment. They are point-in-time evaluations—an MSC certificate confirms a fishery scored above a threshold during an audit cycle but does not verify that every vessel is operating compliantly on any given trip, or that a specific batch came from that certified source.
What certifications often miss: real-time vessel behavior between audits, transshipment events that could introduce non-certified catch, batch-level chain-of-custody verification, and crew social compliance conditions. These gaps are not a criticism—certifications serve an important purpose—but they are not designed to replace continuous digital traceability.
What is IUU fishing, and why does it keep entering certified supply chains?
IUU fishing refers to illegal, unreported, and unregulated fishing. It enters certified supply chains because mixing can occur at transshipment or processing stages where documentation is incomplete or unverified. IUU catch may be mixed with legitimate catch at sea or port, assigned documentation from a certified source, and processed alongside verified product. Without batch-level verification tied to vessel activity and satellite location data, this substitution can go undetected. Regulatory frameworks like the EU’s catch documentation scheme and US SIMP require documentation to address this, but manual systems still leave exploitable gaps.
How does first-mile traceability differ from processing-stage traceability?
First-mile traceability begins at the point of catch—capturing vessel identity, location, fishing method, and catch volume in real time. Processing-stage traceability begins when fish enters a facility, relying on upstream supplier documentation rather than independently verified source data.
Processing-stage traceability can confirm a facility received a shipment with certain documentation. It cannot verify that documentation accurately reflects what happened at sea. First-mile traceability uses satellite VMS and AIS systems to record vessel positions continuously. When a unique Raw Material ID is assigned at port discharge and linked to that vessel activity data, the processing facility receives a digitally verified record of origin—not just a document.
What data is needed to verify a tuna supply chain end to end?
End-to-end verification requires vessel identity and flag state, real-time location and fishing activity data, catch volume and species records, transshipment documentation, port discharge records, processing facility approvals, certification status, and social compliance evidence—each linked to a specific batch, not just a supplier relationship.
Social compliance data is increasingly part of this picture. The EU and US have introduced or are developing import requirements addressing forced labor risk. Verifying crew welfare may involve observer reports, electronic monitoring, or third-party audits such as SMETA or the FISH Standard for Crew. Linking that evidence to a specific batch—rather than holding it at a company level—is what makes a traceability claim genuinely verifiable.
How can digital traceability platforms fix what certifications can’t?
Digital traceability platforms provide continuous, batch-level verification rather than periodic assessment. They capture data at source using satellite monitoring, assign unique identifiers at discharge, automate checks against regulatory databases, and store all verification documents in a linked digital record that travels with the product.
Platforms built on interoperable standards such as GS1 EPCIS and the GDST framework enable consistent data sharing across supply chain partners. A DPP tuna implementation—where a digital product passport is accessible via traceability code—makes verified origin and sustainability data available at the consumer level. This addresses the three main failure modes of certification-only approaches: the time gap between audits, the lack of batch-level chain-of-custody, and the inability to independently verify upstream events.
What should seafood buyers look for in a credible traceability claim?
A credible traceability claim should be backed by independently verifiable data, not supplier declarations. Buyers should look for first-mile data capture, unique batch identifiers linked to vessel activity, automated regulatory database checks, and digitally stored documentation that is audit-ready without manual assembly.
Key questions to ask: Does traceability start at the vessel or processing facility? Is vessel activity verified via satellite VMS or AIS? Can batches be cross-referenced against RFMO registries and IUU blacklists? Are social compliance certifications linked to individual batches? GDST compatibility and GS1 EPCIS integration indicate data can be verified consistently across the supply chain. As EU and US import regulations tighten, buyers relying on supplier declarations without verified data face growing compliance exposure.
How SmarTuna helps verify tuna supply chains from the first mile
SmarTuna is a digital traceability and verification platform built to address the gaps described throughout this article. It captures data from the moment a fishing trip begins and links every batch to independently verified vessel activity, regulatory database checks, and social compliance evidence.
Here is what the platform delivers in practice:
- Real-time vessel monitoring via satellite VMS and AIS, with continuous location and activity records
- Unique Raw Material IDs assigned at port discharge, linking origin, composition, and verification criteria before processing begins
- Automated checks against 15+ regulatory and certification databases, including RFMO registries, IUU blacklists, MSC Chain of Custody, and EU-approved facility lists
- Social compliance evidence—including SMETA, BSCI, and FISH Standard for Crew records—linked directly to each batch’s digital record
- Support for digital product passports accessible via traceability code, enabling consumer-facing transparency
- Automated completion of EU CATCH forms, US SIMP, and FSMA documentation
- Audit-ready documentation available instantly, without manual assembly
SmarTuna was developed by Pacifical, the organization behind the traceability system used by the world’s largest MSC-certified purse-seine tuna fishery, and was the first seafood platform to pass the GDST Capability Test. If you want to see how the platform addresses your specific requirements, you can explore SmarTuna’s solutions or schedule a demonstration to evaluate it against your supply chain.