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August, 1912 THE MARINE REVIEW DasuL PATENT. OIL fires. If the oil is allewed to get too hot, over 200 F., gas will accumulate in the oil line causing the fires to burn unsteady and flicker. To over- come this, open the valve at the end of the oil line slightly for a few sec- cnds to allow the oil to circulate back to the suction and allow the gas to escape. The table accompanying this article shows the marine installations which the. Union Iron Works Co. has made of the Dahl system during 1911 and. 1912, od Dredger for Burma Wim Simons.' €° > Go., daXtenirew, launched from their yard last month the dredger Campbell, built to the order of the Indian government for the improvement of the waterways in Burma. This dredger, which is of the "Simons" suction reclamation type, has been specially designed and con- -structed under the direction of Prof. J. H. Biles, naval architect and con- sulting engineer to the India office. The Campbell is a twin-screw light- draught cutter dredger and will work in conjunction with a floating pipe line and terminal pontoon, arranged for delivering dredged material over river or canal banks for land reclama- tion. The dredging pump is driven by an independent set of triple-expansion engines and the suction pipe is car- ried on a frame fitted in well at for- ward part of vessel. The lower end of suction frame is fitted with a steel spiral rotary cutter, driven by cast steel machine cut gearing from a set of horizontal compound engines placed on deck. The gearing and cutter are of ample strength to stall the engines when working at full power. Independent steam hoist gear is provided for. controlling the suc- tion frame, and very powerful ma- neuvering winches are placed at each BURNER end of the vessel. An operating house is provided on upper deck containing all necessary levers and _ telegraphs to enable one man to have complete control of the dredging operations. The dredger is propelled by twin screws, each driven by a set of triple- expansion engines. Steam is supplied by two cylindrical multitubular boil- 261 ers, constructed to Lloyds require- ments for a working pressure of 160 lb. The boilers are fitted with How- den's forced draft for burning Indian fuel. A complete installation of con- densing plant capable of dealing with exhaust steam from all the engines in the vessel at one time, independent automatic feed pumps, bilge pumps, service pumps, pressure pumps, filters and all the other usual auxiliaries for a vessel of this tye, are provided in engine room. A <fepair (shop with electrically-driven machine tools cap- able of overtaking minor repairs, is fitted on board. Electric light instal- lation is provided both above and be- low deck. The vessel is provided with every accommodation necessary for a crew working in a hot climate. The contract for converting the six- masted steel schooner William L. Douglass, which was sold recently by the Coastwise Transportation Co. to the Sun Co., Philadelphia, into an oil- carrying barge, has been awarded to . Cramps, Philadelphia. STEAMERS FITTED WITH OIL BURNING SYSTEM No. No. Total Name. Boilers. Furnaces. . H. P. Size of Engine. Maverick (oo. es cae. 2 6 1,300 25a Is-6 7 Exo 1 City off sPara Wc ae cae 6 12 1,700 287-44"-707x48" Pennsylvania os eis. i 2 8 1,209 22"-36%4"-60"x36" AZEE Cece en eee ai eames en a geea nes 2 6 1,400 24"-40"-667x45" ~ Baree NO 95.4) oie ese ers 1 2 Senens ea fein ge obete ween ae eeclanaw. sh ee ee es 2 6 800 22"-35/"-58%x42" Pe etary seo re ce ete 6 18 2,800 2914%-48"-787%x54" Olletiny es Wake es ee ee rae aa 3 9 G625500 187-287 -45%x307CE.S:) Kulaged co eis see ie eee css 4 12 2 600 25"-417-48"-487x30" Mauna siod sass ae eo ce 2 4 1.000 1514/-26"-43"x33" Sonoma Nace Pan a ees 8. 24 8.009 28"-46"-75"x48"(T.S.) Veenitita ss i es ere ee S48 24 8,009 28"-46"-75"x48" (T.S.) Unione ue oo ee ee. ce fo 1 ees) TT Prince; -George ie ee. see "4 18 6,000 2314"-37""-41"-41"x33"(T.S.) Peince Rupert Gino we iae ace ke 4 18 * 6,000 2314-37" -41%-41"x33"(1.S.) Voukony oa eee ee ie, 2 4 SOO ey a ees tes cael Venetian yas hye eamen nator. 2 4 800 16/%-227-427x25347 Buckmantec 334). Woe Oe ete 3 6 1,500 2234-37 7%""-63" x40" Watson si ice eae aaa tears 5 6 1,500 2234-37 12-63" x40" Princess Beatines 2.7). vias ses 2 6 1,400 18%"-30"-50"x36" ALK ai ee as Haare aSpceitsie rg 8a 2 4 800 2234/-44"x36" Barantbace. oe ee GG 2 2 609 Locomotive boiler. Wilhelminae es foe ier aac ee 6 24 7,000° 35-58-69" -69" x60" © Britanhia.? 20 Ce ae 1 2 300 107-16"-25 14x16" Rose S City see ee) unin 6 12 1,900 28/-44"-70"x48" Beat ae ee oe ie a eine eee 6 18 3.700 31"-50"-847x54" Beavers eee ee ores ie eet es 6 18 3,700 317-50/-84"x54" Princess -Adelaide +. 0... 4 12 5000: io a ape es ASUNCION OS eee ee ees 2 6 1,400 B. & W.. boilers PACINe Gee Eee a ee ee 2 + 259 Risdon W.. T. California se ee. ae 2 6 3.0008 oe Re cea ee Wilson' Lumber Cos) ic csce a 2 6 Suse Scotch boilers. Caledonian Dredger tis 70 ta. 2 2 600 Springfield dryback boilers. Dredges ay oe ace ee aes 3 3 1.434 Parker boilers. Si SyeAtlas sy se ees 2 6 1,700 2154-34-56" x42" Dan. BoeErickson aw. ee 1 3 400 Scotch boilers. ABaree Non Olan eae wane 1 2 300: Scotch boilers. Olsen Mahoney No. 3......... 2 6 PeTOO Se ee eas tener Union Freight Steamer........ 2 6 mea COC eae coe S7VS. Ashtabula sey ea eecee 4 12 3,000 28347-4614"-77" x5 4" S: S. Princess . Victorias 2)... 6 18 6 000! ee CWA Oe Aen oe Whaler: Kodiak ............. xe 1 2 400) oe as ee ees Whaler Unimalk 0. ac io ess 1 2 400 See oO eas S) Ss-Grace Dollars... ce 1 2 350 101%4"-187-30"x24" S..SssCapt. Av ky lbucagee sos: 2 8 2,550 25"-4114"-68"" x42" S. 3S: SATCOW 8.6 cay at ee 1 1 Fc g A OS, OEIC TE scat Cea aaa Tus Point Grey soe oa 1 3 TOO ate ens es ea a eee ere : S:4S. "Princess: Patriciay). 3. s.u5 One O. E. 8 4,000 Parsons steam turbine, Sev S. Jemerson Seo ees ce 3 9 UA O08 oe ee See nes. S Sich Sepundos si. eoaae s 2 8 2,200 Scotch boilers. Sulphur Boat. Freda... 25.3 ...43 2 6 One Scotch boilers. Ss. ei eee. pager tt anes 2 g 1 GOO pe a ee ae S.. S: Princess. Sophias. 21.0. <3 SO eRe ale ig racat ava rapmr arent ect S90.) Cok EB: Loe Pee 2 8 2,350 25-41 14"-68"x42" : S.Se Richmond s..:.15 5 See as 3 9 3,190 23"-3234/-49"-7114"x51" S7 Se Venture se ies ee 2 6 1,500 Twin screw. Gov PRS Sa ieee ae as 1 2 ADO Be oes a cate pees SS: Portland. ss 2 4 1,000 Scotch boilers, _ WR: sGracev& Conc: orien re 3 6 2,500 Scotch boilers, triple expansion engine. S: So Princess May. .5 scree: OE Oa ois eee