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Purse Seiner Fuel & CO₂

Pelagic purse-seine fishing vessels. Outside CII scope; per-kg-catch intensity - much lower than trawlers (~0.3–1.0 kg CO₂/kg pelagic catch).

Ship typeFishingPurse seiner
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Formula, assumptions, and limits

CO2year=jFjCf,j\text{CO}_2^\text{year} = \sum_j F_j \cdot C_{f,j}
SymbolMeaningUnit
FjF_jMass of fuel jjt
Cf,jC_{f,j}CO₂ factort CO₂ / t fuel
Bench(Annualcatch)Bench (Annual catch)operational benchmarkt
dopd_\text{op}Operating daysd

Source: WCPFC - Western Central Pacific Fisheries Commission; IMO MEPC.364(79) - Cf conversion factors