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Purse Seine Guidebook

Vessels in Other Sustainability Initiatives (VOSI) is a transparency tool for the public, including seafood companies, that want to understand which tuna vessels have made public voluntary commitments to more sustainable fishing beyond the commitments reflected on the PVR.

For example, the VOSI is the only publicly available tool identifying tuna fishing vessels that are part of a Fishery Improvement Project or fishing in an MSC-certified fishery. Information about other voluntary efforts by fishing vessels — such as having Electronic Monitoring Systems (EMS) that meet ISSF minimum standards, participation in biodegradable and fully non-entangling FAD trials or FAD recovery programs, and provision of FAD position and biomass data — are also displayed.

VOSI is a tuna-sourcing tool for seafood companies. ISSF invites vessels to learn more about VOSI. Information about eligibility and the application process is available on the ISSF site.