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Motor Yacht Fuel & CO₂

Private and commercial motor yachts. Not subject to IMO CII unless engaged in commerce ≥ 5,000 GT. Operators use CO₂ per charter-day for sustainability reporting.

Ship typeYachtMotor yacht
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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(Charterdays/year)Bench (Charter days / year)operational benchmarkd
dopd_\text{op}Operating daysd

Source: SYBAss - Superyacht Builders Association sustainability report; IMO MEPC.364(79) - Cf conversion factors