NOₓ emissions arise from high combustion temperatures and vary based on engine tier, typically from 15 to 87 g/kWh. SOₓ emissions result from burning sulfur in marine fuels and are calculated as:
SOₓ (kg) = Fuel (kg) × Sulfur (%) × 2
Newer engines (Tier 3) and Emission Control Areas (ECAs) help reduce pollutants. This tool estimates emissions based on typical marine fuel data and operating parameters.