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August, 1925 MARINE REVIEW 13 1. Main driving motor, 2300 s.hp. 2. Drip-proof ventilated marine motors for auxiliaries. Largest American Diesel Electric Drive Now in Regular Service E 7500 ton tanker, J. W. VanDyke, owned by the Atlantic Refining Company, is the largest ship in point of tonnage, yet converted to Diesel Electric Drive in the United States. This ship has completed several voyages to the com- plete satisfaction of her owners and has confirmed their judgment of the superiority of electric propulsion. The main drive consists of a Westinghouse 2300 s.hp., 100 rpm., double armature motor, and power is supplied by three 840 b.hp., Ingersoll-Rand Diesel engines driving West- inghouse generators. The exciters, switchboard, auxiliary motors and control were also furnished by Westinghouse. Electrically propelled ships now in service have demon- strated their unquestionable reliability, flexibility, and their ability to withstand the most rigorous climatic and sea conditions. Pope Ea For conversion and construction, consult Westinghouse marine engineers about the application of efficient electrical equipment. Westinghouse Electric & Manufacturing Company East Pittsburgh Pennsylvania Sales Offices in All Principal American Cities Service Stations in All Principal American Ports Special Pacific Coast Representatives Hunt, Mirk & Company, San Francisco Westinghouse X 81770 Please mention MARINE REVIEW when writing to Advertisers