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Sailing Yacht Fuel & CO₂

Cruising / racing sailing yachts. Power-plant used for aux and manoeuvring rather than primary propulsion. Per-running-hour intensity and sail-assist fraction tell the story.

Ship typeYachtSailing
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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(Enginerunhours/year)Bench (Engine-run hours / year)operational benchmarkh
dopd_\text{op}Operating daysd

Source: ISS - International Superyacht Society sustainability guide; IMO MEPC.364(79) - Cf conversion factors