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THE DIAMOND SOOT BLOWERS ON FOSTER MARINE WATER TUBE BOILERS MARINE REVIEW “PIL Say They Do!” declared Warner, the Fleet Engineer to Captain Richmond, the “Old Man”. The two were in warm argument over the trip log of the S.S. Arethusa, the document having, as readers of this paper will remember the Chief Engineer predicted, caused them to ‘“‘sit up and take notice’. “Now let me get this straight,”’ the veteran vessel owner re- plied. “We have owned the Arethusa four years. The best speed she is able to maintain is an average of eleven knots, which is a trifle faster than either of her sister ships is able to make, due probably to the fact that MacGregor is the better engineer. Then, all of a sudden, we find her arriving in port eighteen hours ahead of schedule. Her log shows she has been making nearly twelve knots an hour and when I ask you for an expla- nation, you answer that you have equipped her boilers with Diamond Soot Blowers! That right?” The fleet engineer nodded. “Now Mr. Warner,” the captain continued with asperity. ‘“‘Will you kindly tell me what effect a device for blowing the soot out of a boiler has on a vessel’s speed>”’ His dis-belief was evident. ‘The result is simply explained.’’ Warner smiled. ‘First your soot is not merely blown out of the boilers. It is blown off the fire surfaces where its presence prevents heat transfer- ence. The less resistance there is to the entrance of the heat units into the water in the boiler, the easier it is to make steam. The more steam, the more work from the engines. In this instance the Arethusa not only made a quicker voyage, but she burned five per cent less fuel than usual!’’ he finished. BLOWERS to 8% FUEL April, 1919 DIAMOND POWER SPECIALTY COMPANY Detroit, Michigan “Then your soot blowers increase operating efficiency all down the line, from reducing overhead per ton in the office, to increasing tonnage handled per year, and so on clear down to a saving of several thousand dollars in fuel?’ the Captain demanded. “T’ll say they do!’ Warner repeated. “Hmmm! The Old Man’s fingers drummed the table for a long minute. He was doing some rapid thinking. ‘Mr. Warner’’, he announced finally, ‘‘I don’t know whether to fire you or raise your salary. Man and boy you have been with the Red Star Navigation Company eighteen years. You know our policy regarding increasing operating efficiencies by all practical means and methods and | should like to have you tell me why I ought not to discharge you for not. putting in Diamond Soot Blowers on all our boats years ago.’ He paused a moment and the smile which made his men swear by him began to light his face. ‘‘On the other hand, Frank, I admit that a great deal of our present efficiency is due to your suggestions and the improvements which you have inaugurated, so I guess I’ll have to give you a raise provided you have all our boats equipped within 90 days.” -< Important Notice to Marine Men: For further information on Diamond Soot Blowers ask fof Bulletin 122 “How Some Ship-owners Have Increased Their Profits.” Please mention ‘THE MARINE REVIEW when writing to Advertisers 35 A 4 3