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This report analyzed the movements of carrier vessels operating in the Western and Central Pacific Fisheries Commission (WCPFC) Convention area in 2016. Through analysis of AIS data, the report identified carrier vessel voyage patterns and quantity, carrier vessels' flag state patterns, the spatial distribution of potential transshipment on the high seas, and the port visit locations by carrier and flag states. The report also found that many carrier vessels did not transponder on AIS, leading to significant gaps in data on unreported transshipment events. Ultimately, the WCPFC’s management of transshipment in its Convention area is compromised by a lack of reported information on transshipment, coupled with non-compliance with reporting requirements and non-standardized reporting responses by CCMs on carrier vessels and their activities.

In this research study, Global Fishing Watch uses AIS information to identify where transshipment can be happening and who is doing it. About 42 percent of potential rendezvous (what is identified through AIS data to track transshipments) occur on the high seas, with the rest happening within the EEZs of different nations–especially Russia. It is concerning, however, that those areas with higher levels of reported IUU fishing correlate with areas of high potential rendezvous. With such a high level of transshipments occurring on high seas, the global community could not only benefit from using AIS data to identify illegal transshipments but must also cooperate to address lax oversight and control. This revised report improves on the methodology of the earlier finding in February 2017.

The Committee on Fisheries (COFI) undertook a global report on transshipment activities including the state of transshipment regulations and practices, guidance on specific control mechanisms for transshipment, and the state of independent monitoring and control over transshipment. The COFI held a workshop to overlook their report and the Global Stakeholder Survey responses they received from 91 States. The workshop concluded, among various other findings, that transshipment threatens the marine environment and human rights abuses without effective monitoring and control. However, the practice is an important cost-effective fishing operation and does not in itself pose a threat to what was previously discussed–further research must be done to see the extent of illicit transshipment operations.

Transshipment at high seas is very difficult to monitor, allowing the possibility of illegally caught fish to enter the legitimate seafood market, or enabling human rights abuses. This paper uses AIS data to track global transshipment behavior. They find that a majority of transshipment occurs at high seas outside of EEZ boundaries–areas that may lack national jurisdiction or where regulations are difficult to enforce. Additionally, possible transshipment encounters are happening with vessels flying flags of convenience. Together, these findings paint a scene of large transparency issues in global transshipment behaviors that will need to be addressed by governing bodies.

In this research study, Global Fishing Watch uses AIS information to identify where transshipment can be happening and who is doing it. About 42 percent of potential rendezvous (what is identified through AIS data to track transshipments) occur on the high seas, with the rest happening within the EEZs of different nations–especially Russia. It is concerning, however, that those areas with higher levels of reported IUU fishing correlate with areas of high potential rendezvous. With such a high level of transshipments occurring on high seas, the global community could not only benefit from using AIS data to identify illegal transshipments but must also cooperate to address lax oversight and control.

This study begins by identifying the trends in usage of flags of convenience (FOC). Using the Lloyd's Register database, they compile a list of fourteen countries that consistently top lists of FOC countries or are of particular concern to IUU fishing. Despite the adoption of enforcement pieces like the UN FAO IPOA, registration to these fourteen countries has only slightly declined and new vessel constructions are largely registering with FOC countries. Next, the database helps determine the role and character of the at-sea transshipment, refueling, and resupply fleets in supporting the operations of high-value tuna longline fleets and other fishing fleets on the high seas. Many of these vessels engage in a combination of participating in IUU transshipment as well as legal vessels fishing for tuna.

Greenpeace undertook a research project to understand the extent of misuse of AIS by the global reefer industry. Greenpeace identified and studied 416 reefers that make up the majority of vessels that have transshipped at sea in the period 2017-2019. From these vessels, Greenpeace found multiple instances of violations of AIS, with proof in adopting 'flags of convenience' (most commonly, Panama), the behavior of vessel interactions with 'encounter' and 'loitering,' and transshipment in areas that are unregulated or pose a threat to marine habitats. The continued violations of AIS by reefers, according to Greenpeace, calls for a robust Global Ocean Treaty that will stop these harmful activities and protect our oceans.

To combat IUU fishing facilitated by at-sea transshipment, the Indonesian government banned the activity in 2014. Enforcing the ban, however, has been difficult due to the challenges of detecting and monitoring transshipment activities at sea. This study provides a suite of indicators for longline and purse seine fisheries in Indonesian waters as a useful tool to underpin monitoring, control, and surveillance activities to reduce IUU fishing. Through this analysis, the extent of increased enforcement and legislation managing transshipment puts Indonesia at the forefront of nations addressing IUU fishing.

The number of reported high-seas transshipment events in the Indian Ocean Tuna Commission (IOTC) Convention Area has increased by over 94% between 2014 and 2018. This growth in transshipment activity has not been met with equal management and monitoring regulations. The Commission implemented Resolution 18-06 requiring that all transshipments occur in port but allows large-scale tuna fishing vessels (LSTVs) to transship at sea if they are authorized by their flag CPC and comply with other specific requirements. However, this paper analyzes transshipment operations reported to have occurred within the IOTC Convention Area and finds that the resolution has flaws and that high-seas transshipment is increasing with insufficient monitoring and compliance. All of these problems are given a recommendation on how to address them.

The Western and Central Pacific Fisheries Commission (WCPFC) has seen a staggering growth in transshipment activity within its Convention Area. Using publicly available information on transshipment
operations within the WCPFC, the WCPFC provides an analysis of transshipment and recognizes the need for additional management rules on transshipment within its Convention Area. Their analysis shows flaws in managing transshipment events and sharing and reporting data between other RFMOs and within their own carrier observers. Implementation of the best practices developed by the Pew Charitable Trusts could be a solution to this issue.

In an extensive one-year research on Thailand's overseas fishing fleets, Greenpeace finds that many of Thailand's distant water fishing fleets participate in illegal, unregulated, and unreported fishing. Despite the Thai government passing regulation in 2015 to control distant fishing fleets, Greenpeace uncovers multiple enduring human rights violations. Many of Thailand's companies, aided by large refrigerated vessels known as "reefers", are once again sailing at sea, continuing practices that lead to trafficking, fatalities, disease, and countless other human rights violations.