It is inevitable that the exhaust gas emission from marine engines will be further regulated, and we expect that many new engines, and especially existing engines, will eventually have to be operated on low-sulphur fuel. This will be the case even though exhaust gas scrubbers and/or emission trading has become possible. On MAN B&W two-stroke engines, no difference in the engine performance is considered between DO/GO and HFO operation, where the HFO used today has a sulphur content of 2.7% on average. However, operators have to take the necessary precautions, and the marine industry has to consider what general application the new low-sulphur fuels are being designed for, especially with regard to the fuel compatibility between fuels, and ignition qualities.
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