Certifier : 
SCS Global Services
Certified status : 
In Assessment

Overview

Fisheries are composed of one or more parts, each of which is entitled to receive an MSC certificate. These parts or “units” are defined by their target stock(s), fishing gear type(s) and if relevant vessel type(s), and the fishing fleets or groups of vessels.

When the term “Unit of Certification” is used for fishing units that are in assessment, it refers to the “Unit of Assessment” or “Unit of potential certification”. Expand a status below to view the parts that form this fishery. To check the detailed scope, download the latest certificate or open the Assessments page to get the latest report. Find out more by visiting our page on Fisheries

Units of Certification & Certificate Information

  • In Assessment
    MSC UoC Number Species Gear Type Ocean Area
    UoC-3999 Albacore tuna (Thunnus alalunga) Hooks And Lines - Longlines 61 (Pacific, Northwest), 71 (Pacific, Western Central)
    UoC-4000 Albacore tuna (Thunnus alalunga) Hooks And Lines - Longlines 77 (Pacific, Eastern Central)
    UoC-4001 Albacore tuna (Thunnus alalunga) Hooks And Lines - Longlines 71 (Pacific, Western Central), 81 (Pacific, Southwest)
    UoC-4002 Albacore tuna (Thunnus alalunga) Hooks And Lines - Longlines 77 (Pacific, Eastern Central), 87 (Pacific, Southeast)
    UoC-4003 Yellowfin tuna (Thunnus albacares) Hooks And Lines - Longlines 61 (Pacific, Northwest), 71 (Pacific, Western Central), 81 (Pacific, Southwest)
    UoC-4004 Bigeye tuna (Thunnus obesus) Hooks And Lines - Longlines 61 (Pacific, Northwest), 71 (Pacific, Western Central), 81 (Pacific, Southwest)
    UoC-4005 Yellowfin tuna (Thunnus albacares) Hooks And Lines - Longlines 77 (Pacific, Eastern Central), 87 (Pacific, Southeast)
    UoC-4006 Bigeye tuna (Thunnus obesus) Hooks And Lines - Longlines 77 (Pacific, Eastern Central), 87 (Pacific, Southeast)

View glossary of terms

Catch by Species

Species Reported Catch Year Metric Tonnes
Albacore tuna (Thunnus alalunga) 2025 68.1
Bigeye tuna (Thunnus obesus) 2025 1,057.6
Yellowfin tuna (Thunnus albacares) 2025 1,091.7

Information is provided by an independent Conformity Assessment Body as live weight (the weight of species at the time of catch, before processing) and where a fishing season covers multiple years, the end year is given as the reported catch year. Additional information is available in the latest report, see the assessments page.