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April, 1925 MARINE REVIEW 127 Wueeee Seer ss be) Oil Engine—Electric Driven Tanker “J. W. Van Dyke.”’ A Result of Modern Engineering. HE power plant for the Atlantic Refining Company’s con- verted Tanker ‘“‘J. W. Van Dyke’’, consists of three 840 BHP Ingersoll-Rand oil engines direct-connected to generators. The full power output may be used at sea for ship propulsion and in port for cargo pumping. This type of power plant eliminates overhead on unpro- ductive direct-connected propelling engines while in port and on unproductive pumping engines while at sea. It also conserves valuable cargo space and permits of a smaller operating force peesseea ic: and lower maintenance cost. : Three oil engines—generator units and a double armature driving motor combine the propelling efficiency of a single-screw with twin-screw reliability. The results are a lower cost per ton mile of cargo carried,— the measure of marine operating efficiency. For conversion work, the oil engine — electric drive power plant can be installed with minimum changes in the hull. Specify I-R oil engines for marine-electric drive. INGERSOLL-~ RAND COMPANY~-11 BROADWAY NEW YVORK:ClTr y, Offices in: principal erties the world over FOR CANADA REFER-CANADIAN INGERSOLL RAND CO LIMITED. 200 ST JAMES 5ST REET MONTREAL QUEBEC Shin hotiemn ea aa racapes Sarena SE Ingersoll- R Please mention MARINE REVIEW when writing to Advertisers