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August, 1916 THE MARINE REVIEW 63 FIRE TUBE MARINE SUPERHEATER EIGHT REASONS WHY 1. It is adaptable to either new or existing boilers of the fire tube type and can be applied with no change in design or construction. 2. It renders possible an increase in output of boiler horse power from a given boiler plant, 10% to 20%. 3. It will produce the same power output with fewer boilers. 4. It reduces the size of the bunkers, thereby reducing the draft of the vessel with a given cargo or making possible an increase in revenue cargo. GUUS} ELECTRIC WHISTLE OPERATOR The simplicity of installation is , one of the many advantages over all other electrically controlled ‘ Whistle Valves, saves time, material, weight, maintenance and cost. Eliminating instruments and wiring in wheelhouse. Eliminating the use ot Electric Motors for operating. Electric Control Co. 161 Washington St. NEW YORK RITCHIE Compasses, Binnacles, and NAUTICAL Instruments SOLD IN ALL PARTS OF THE WORLD Magnets for Adjusting Purposes. E. S. RITCHIE ¢® SONS BROOKLINE - MASS. NAVY STANDARD BINNACLE 5. It results in a saving of fuel over saturated plants, both operating on _ — | under the same draft conditions, of 10% to 20%. 6. It reduces the maintenance costs by the prevention of water hammer, leaky flanges and con- densation in the cylinders. 7. It does not prevent rapid, a WINS thorough and frequent cleaning of \N XY YY | the tubes. =A WW) é ° 2a | 8. Its construction provides easy Sas access to all screwed joints and the } easy removal of the parts. LOCOMOTIVE SUPERHEATER COMPANY 30 Church Street, NEW YORK, N. Y. Peoples Gas Bldg., CHICAGO, ILL. PROPELLER DESIGNS DYSON METHOD DYSON SUPERVISION BEST IN THE WORLD Write for our booklet AMERICAN SCREW PROPELLER COMPANY 1520 SANSOM STREET PHILADELPHIA Consulting Engineers Captain C. W. DYSON Director LUTHER D. LOVEKIN, M.E. RAYMOND E. LOVEKIN U. S. Metallic Packing FOR... Marine Engine Piston Rods and Valve Stems The U. S. Metallic Packing Co., PHILADELPHIA, PA. Write for Catalog Have You Read the Classified Advertisements? Real bargains in Passenger and Freight Boats, Dredges, Tugs, Dredging Machinery, Engines, Boilers, Cranes, and other opportunities are awaiting you. Take a Look No w—You May Find Something Interesting 202 Please mention THE MARINE Review when writing to Advertisers