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March, 1925 SUPERHEATED STEAM |[\., 10,420 MILES 39.8 DAYS | 1512 TONS COAL SATURATED STEAM 8,857 MILES 33.8 DAYS 1512 TONS COAL MARINE REVIEW SUPERHEATED STEAM 11,8300 MILES 2 45 DAYS 1710 TONS COAL 4 . ¢ D Ne SATURATED STEAM \ 10,030 MILES 38.3 DAYS 1710 TONS COAL — More Miles Per Ton of Coal With Superheated Steam — Above is shown graphically the actual courses of two cargo vessels operating in the same trade and under practically the same conditions. In all respects the ships were identical; they were each 11,000 tons d. w. and had Scotch boilers and reciprocating engines. Speed 11 knots. But one of the ships, being equipped with Elesco Fire Tube Superheaters was operated on 200 deg. super- heat. She made a substantially better mileage as shown 600 HP TUG with LIDGERWOOD Towing engine for HARBOR service Send for particulars Towing with short hawser LIDGERW®D "co" 96 LIBERTY ST -NEW-YoRK Philadelphia - Pittsburgh - Chicago - Detroit ¢ Seattle «Tacoma « San Francisco * Los Angeles Portland, Ore. ° Columbus, O. Sales Agents: Woodward, Wight & Co., Ltd., New Orleans Canadian Allis Chalmers, Ltd., Toronto John D. Westbrook, Inc., Norfolk, Va. Hawser lengthens without slowing tug above—a striking demonstration of one of the advantages of superheated steam for marine service. THE SUPERHEATER COMPANY 17 East 42nd Street Peoples Gds Building NEW YORK CHICAGO Philadelphia Boston Pittsburgh Canada: The Superheater Company, Limited, Montreal or SAFE and FAST TOWING She. AUTOMATIC TENSION TOWING ENGINE. gives to light wire hawsers all the elasticity required to prevent rupture. This towing engine governsthelength as well as the tension of hawser. The hawser pull is steady not alternately slack and tight. Hawser never drags on bottom of sea in shallow water. Light hawsers handle easy. . HAWSER NEVER SLACKENS HAWSER NEVER JERKS HAWSER NEVER BROKEN This towing engine is a cheap insur-- ance against the consequences of broken hawsers. Foreign Offices: London, England Sao Paulo, Brazil Rio de Janeiro, Brazil Please mention Marine Review when writing to Advertisers