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July, 1925 , MARINE REVIEW 35 World’s Largest Plate Mill Lukens Can furnish plates up to 196! wide Boiler heads flanged in one piece up to 15! 6!" O. D. Use Wide Plates And Eliminate Seams and Leaks Save—Labor—Time—Rivets Results—Better Finished Job—Less Time for Repairs—More Service Hours Lukens Steel Company Coatesville, Penna. Corrugated Furnaces LIDGERWOOD ELECTRIC and STEAM STEERING GEAR We build a complete line of steering engines, power driven and combined hand and power driven types; screw gear and ram types. STEAM ELECTRIC SHIP WINCHES DOCK WINCHES Automatic Tension Towing Engine —made to your exact requirements—any size True to size — easily and quickly installed. Highest quality and therefore longest life. Conform to United States, American Bureau of Shipping, Lloyd’s Register of Shipping, Bureau Veritas and other standards and specifications. Prompt deliveries. For complete information write— American Spiral Pipe Works Main Office and Works: Box 485 Chicago, Illinois New York Office: 50 Church St. MR-7]-RTG LIDGERWOOD MFG. Co. 96 Liberty St., New York Philadelphia, Pittsburgh, Chicago, Seattle, Tacoma, San Francisco, Los Angeles, Portland, Ore., Columbus, O. Sales Agents: Woodward, Wight & Co., Ltd., New Orleans Cana- dian Allis-Chalmers, Eid eet John D. Westbrook, Inc., orfolk, Va. Foreign Offices: London, England Sao Paulo, Brazil Rio de Janeiro, Brazil Please mention MARINE REVIEW when writing to Advertisers