No-Smoking area for ships

摘要

The most stringent environmental protection regulations are now in effect in Alaska. To support cruise vessels slow-steaming in sensitive glacial waters, diesel engine producers introduced »smokeless« (Waertsilae) or »invisible smoke« (MAN B&W) engines. Generally spoken, diesel engines can not be smokeless. Where a combustion engine burns fuel (see HANSA 4/2000, S. 36-40) power, heat and exhaust gases are the consequences. Whether these exhaust gases can be realised as smoke, and what smoke is really, that has to be defined technically. In general, there is exhaust gas coming out of the engine and consequently out of a ship's funnel. Exhaust gas of diesel engines can be bright or dark.