Transshipment

Transshipment—the transfer of catch between vessels—plays a vital role in the commercial fishing industry. Each year thousands of fishing vessels offload fresh catch like tuna, crab, and small pelagic fish onto refrigerated cargo vessels called carriers, commonly referred to as “reefers,” which then take it to shore for processing. This allows fishers to avoid a costly and time-consuming trip back to port, increasing the freshness and value of their catch.

The challenge

While transferring catch from one vessel to another may seem innocuous, it often takes place at sea, out of sight and reach of authorities. Limitations in effective monitoring and controls allows unscrupulous operators to manipulate or omit data pertaining to their fishing practices in an effort to gain financial advantage. This lack of transparency enables conditions that can lead to illegal, unreported and unregulated fishing and also opens the door for other maritime crimes to take place, such as the trafficking of weapons, drugs, and even people. 

Insufficient data and inaccurate reporting of catch can lead to skewed stock assessments, which can impact conservation and management efforts across valuable fisheries. It can also impede traceability efforts, since illegally caught fish is often mixed with legal catch. Without adequate regulatory management, transshipment will remain the last frontier in legal fishing. 

How Global Fishing Watch is transforming transshipment

Global Fishing Watch is harnessing technology to create innovative tools that can help bring transparency to one of the most secretive practices in the fishing industry. Through publicly sharing map visualizations and creating data and analysis tools, we seek to inform management and policy efforts and provide a more complete picture of activities taking place at sea. 

Recent Work
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Spotting Transshipment with an Ocean of AIS Data

Find out how Global Fishing Watch’s carrier vessel portal promotes ocean sustainability by tracking transshipment with the help of AIS data This article was produced and first published by our data partner, Spire Global. Global Fishing Watch

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