|
What are the baselines for nitrogen and sulphur oxides according to MARPOL? IMO regulates nitrogen and sulphur oxides for sea-going ships through MARPOL Annexx VI. SOx global ceiling is set to 4.5% m/m of fuel oil with the exception of the SECAs, where the ceiling drops to 1.5% m/m. SECA (abbreviation for SOx Emission Control Areas) are currently the Baltic Sea, the North Sea and the English Channel. A mandatory NOx ceiling for ships rated above 130 kW is found below, with the majority of ships falling between 10 to 17 g/kWh: NOx emission limit in grams per kiloWatt hour | Engine speed (n) rpm | 17g/kw-hr | For n<130 rpm | 45.0 x n(-0.2) g/kW-hr | For 130 ≤ n < 2000 rpm | 9.8 g/Kw-hr | For n ≥ 2000 rpm |
|