For long-term tuna sustainability, a growing number of tuna companies worldwide are choosing to partner with ISSF, follow responsible fishing practices, and implement science-based conservation measures.

As part of its commitment to transparency and accountability, ISSF engages a third-party auditor, MRAG Americas, to audit ISSF participating companies annually — assessing their compliance with ISSF’s Conservation Measures and Commitments. Visit our Audit Process page to download the MRAG audit policy documents for the current year, previous year, and next year.

The most recent MRAG compliance reports for each ISSF participating company appear here. Under the ISSA Compliance Policy, companies may be required to remediate non-conformances found during the annual audit, and MRAG will issue reports for those companies that do so. Those remediation reports, which have “Update of Compliance Status” in their titles below, appear alongside the companies’ final annual reports.

ISSF also publishes an Annual Conservation Measures & Commitments Compliance Report, and an update to that report, which tracks all companies’ compliance with each conservation measure. They show the level of conformance as well as compliance improvements over time. Download the most recent compliance report: April 2020 (annual). We also publish audit reports for ISSF Data Check Companies.

The Ideal Purse Seine Vessel: A Guide To Demonstrating Best Practices & Meeting ISSF Conservation Measures

Date Added: May 13, 2015
Downloaded: 436 times
Tags: Best Practices, Compliance, Conservation Measures, ProActive Vessel Register, Purse Seine
Language: English


About 63 percent of the worldwide tuna catch is made by purse seine vessels. That’s why since its inception in 2009, ISSF has dedicated considerable effort to better understand and define what the main issues of concern are in purse seine tuna fisheries. ISSF conducts at-sea research to investigate potential mitigation measures; leads workshops with purse seine skippers to share mitigation techniques and seek input about other potential mitigation measures; and advocates for RFMOs to adopt mandatory data-collection and mitigation measures as well as needed management measures for tuna stocks.

From observer coverage to unique vessel identifiers, this work has, in turn, informed a suite of conservation measures against which ISSF participating companies are audited annually and which impact how many purse seine vessels operate. It’s also led to the identification of further at-sea approaches for such vessels – from bycatch handling to species identification – aimed at improving the sustainability of global tuna fisheries.

In an infographic and supporting paper, ISSF presents these participating company commitments – many of which are also tracked on ISSF’s ProActive Vessel Register – and other best practices encouraged by ISSF and some tuna RFMOs as a guide to tuna sustainability best practices for purse seine vessels.