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MAINTAINING A PROGRESSIVE RECORD IN MARINE ENGINEERING THE S. 8S. PRESIDENT COOLIDGE (Sistership of the S$. S. President Hoover) i S. S. President Coolidge, sistership of the S. S. President Hoover, of the Dollar Steamship Lines, is a Westinghouse turbine- electric propelled ship of 26,500 shp. In addition to the propulsion equip- ment, consisting of the main turbine- generators, propelling motors for the twin screws and control for the pro- pelling machinery, Westinghouse also furnished motors and control for all electrified deck and underdeck auxiliaries, as well as the fans and heaters for the staterooms and living ++ ++ WESTINGHOUSE EQUIPPED spaces. The selection of this type of propulsion is a tribute to the confi- dence of the shipping industry in the reliability of turbine-electric drive. The S. S. President Coolidge and the S.S. President Hoover are the largest commercial ships ever built in America and the largest turbine-elec- tric merchant ships in the world. They soon will enter the round-the- world service of the Dollar Steam- ship Lines, one of the most prominent American shipowning companies. eee Maintain American Shipping by Patronizing American Ships 46 ESTINGHOUSE ELECTRIC : MARINE REVIEw—August, 1931