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November, 1926 companies have expended large sums of money and a great deal of labor and planning to perfect this type of propulsive power to lower operating cost on the chance and with the hope that by doing so the operator benefiting from this reduction would give them orders. Rea- lizing the necessity of encour- aging such development if the country is to be prepared to meet competition in foreign trade the shipping board two years ago ordered the conver- sion to diesel drive of 14 steam cargo ships of large size. The first completed vessel of this program will undergo sea trials about the end of October. And though the work has progressed very slowly the essential pur- pose of the project has been ac- complished. Twelve marine die- sel engines of considerable size (around 3000 brake horsepower) have been built or are under construction by five reputable and experienced engine builders. of these companies have had the practical ex- perience of building the comparatively new type 8. of double acting diesel engine making possible 9. as demonstrated abroad the utilization of larger When completed the government will powers. Name and Service Sawokla, LI MUTIIITHTETSITELLLLUUUMLLLCCLOUOLASOSSOUUEUUUUPLVLULUOOOOOUOUUUUCULUTULLOTHOOOHUO EU UOUOOOOOOccceaTUTUOODOQOQOCUEUUUUUTELUUUTTUL SUNTAN MARINE in what is being done abroad as long as his fel- low operator is content to continue in the usual way. With such conditions existing the remark- able development of diesel engines and _ diesel- electric units for ship propulsion, within a com- paratively short period, by a number of large and small companies is very creditable. Freighters Oscar Daniels Hull, Ocean.......... OCGAD cS Cede rere eeereeeeeeeeeteseseses Pee errr eee eeeserseseseses These UTTTUTUTIREVIVALELOAEEEADUOTOLOOCOLOCOVOROLOAVOV ORO EVUEVEAUGEAUATRLOTOTOTOOTOTOTT Sixteen Diesel Engines HE ship owner and his naval architect are not specialists in diesel engineering, but they have definite ideas about the re- quirements of efficient propul- sive and auxiliary machinery. The naval architect representing the owner is concerned about the overall propulsive and oper- ating efficiency of the vessel he is designing. The questions a thoroughly qualified naval archi- tect would ask of the engine builder are those which the own- er is primarily interested in. Within practical limitations of space there is presented in the following pages the answers to some of these questions for 16 different makes of diesel engines installed in as many different vessels. The informa- tion given is authoritative as it was received directly from each engine builder. ; HUUUUIVEOUIUUUUTUUSOGUUSUUTUOOEUUUULUGEGUL EU UUUHGLLULAIOLAE Four SUVA LUAU URE Diesel Ships—Where to Find Them : Tugs = Page Name and Service Page = aagewsssisicabieeasi nes 14 Hustler, Barge: Canalicgc.c crn oe = Lote: 18 Russell. 3, ‘ Harbor.snionedinunn ae ce = RG ela Pg Seat 15 Walnero. No: 4, Barge ‘Canel i anes 0 = eee re Ete eee 16 W. H.. Hoodless, Coastwis@ici ii ccccctcccutns s 2 OO = suecratehsisaetceacs, 36 Vichis : Arcadia; Ocean’ siis anisms oe 20 = Athero Ib, OceaninicSs hae 38 = Winona, . Coast wisn cic ccicusc ee cies es ater 34 = ee nN EEE 40 : = sr eegecretle sas: 42 Special 5 Dasiniceas ei ieancesscsss 22 Carmina, Pilot Boaticccs2eci ince E ie SSUUUNUTNTEROTTOOE TATTOO EOE TEO TEES REVIEW have 12 modern diesel cargo ships of a type par- ticularly suitable for liner service in foreign trade. The practical experience gained by the engine builders has materially advanced the art of build- ing large size engines. interested and the successful trials and operation of these ships will be of great value in establish- protected waters. 7. Tugboats, lighters, fire boats and smaller harbor craft of all types. Cargo and passenger boats on inland rivers. Special boats such as hydraulic dredges, sand suckers and snag boats. (Continued 'on Page 94) 13 The private operator is ing thorough confidence in the diesel engine for large cargo carriers. The several services of the American merchant marine in which the application of the diesel engine to marine propulsion should be consid- ered may be enumerated as follows: 1. Passenger and cargo ocean liners, in service trans- atlantic, transpacific, inter- coastal, to the West Indies, Mexico, Central America and to South America. 2. Cargo vessels in the same trade routes. 3. Tankers in trade routes. 4. Passenger and cargo ves- sels coastwise. 5. Cargo . vessels on Great Lakes. 6. Smaller vessels, such as tankers, freighters and ferries in rivers, bays, harbors and the same the