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12 THE MARINE REVIEW October, 1920 fh iL PE h\ FY \\f HH me = nH | ia a emg 11> | 3 So, Hy) Reducing Vessel Operating Costs The savings effected by Diamond Soot Blowers“are tangible and constant. Let us take the case of a fairly large ocean steamship—which we may call the ‘‘Princess Anne.” This vessel on its regular run consumed an average of 130 tons of coal each 24 hours, before Diamond Soot Blowers were installed. After the blowers were put in operation, the coal consumption of the steamship decreased between 5 and 6 per cent. This amount was large enough to be readily noticeable from the start. Eventually it was measured with accuracy. In addition to the decreased fuel consumption—which alone was equivalent to a saving of $11.00 per hundred miles of operation—the boilers were found to make steam with greater facility, and the firemen gen- erally had an easier time and were better satisfied with their work. ~ It is axiomatic that cleanliness and efficiency always and everywhere go hand in hand. You cannot get the best results out of a boiler, the heating surfaces of which are coated with soot and ash. And remember this: the formation of soot is a condition of combustion. You will always have soot, whether you burn coal or oil, and its removal is just as essential—just as profitable—in one case as the other. Thousands of steamships are today equipped with Diamond Soot Blowers. If your vessel is not one of these, ane details of your boilers and ask for your copy of Bulletin 144, ‘“‘How Some Ship Owners Have Increased Their rofits.”” FUEL | @ DIAMOND POWER SPECIALTY COMPANY Detroit, Michigan cn.ee es Veet s. Please mention THE Marine Review when writing to. Advertisers