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TOM SAWYER—Towboat—Rivers—Twin Screw—Diesel Name—Tom SAWYER Owner—Federal Barge Line Builder—Midland Barge Co., Midland, Pa. Naval Architect—Owner’s Engineering Staff Launched—F'eb 27, ’33; Comp. May 15, ’33 Sister Ship—FRANKLIN D. ROOSEVELT. Com- pleted July 13, 1933 and entered service Classification—American Bureau of Shipping HULL PARTICULARS Length over all, 160 feet, 914 inches; length between perpendiculars, 160 feet; breadth molded, 40 feet; depth molded, 8 feet; draft, 4 feet, 51% inches; displacement loaded, 646 tons; gross tonnage, 603.68; net tonnage, 495; bunker diesel fuel capacity in tons, 100; speed, with tow, 6 miles per hour; without tow, 8 miles per hour. MACHINERY PARTICULARS Main Engines—Two, 4-cycle, 8-cylinder, single acting, mechanical injection, direct reversing, marine diesel engines, of 12%4-inch bore and 22 inches stroke; built by McIntosh & Seymour Corp. Each engine develops 590 brake horse- power at 300 revolutions per minute, and 675 brake horsepower at 330 revolutions per minute, making a total of 1350 b.h.p., at overload rat- ing. Each engine is direct connected to a pro- peller working in a partial tunnel. Auxiliary Generators—Three, General Elec- tric, direct current; two of these generators = Seen a es hey _/| ED BEA 0 y ‘came SS HR es eo 1S ORS ET ES SG bene imal 4 STAY LAY weit al LO DESCRIPTION The Tom SAWYER and sister vessel FRANKLIN D. ROOSE- VELT are twin screw, tunnel type, direct diesel drive towboats, built for the Inland Water- ways Corp., for service on the up- per Mississippi riv- er and its. tribu- taries. See MARINE Review for July, 1933. each of 30 k.w., 120 volts, are driven by vee belts from the main engines; one of these gen- erators, of 30 k.w., is driven by a 45 brake horsepower McIntosh & Seymour diesel engine. All three generators, or either one, will operate on the main bus while a 56-cell storage battery of Electric Storage Battery Co. make is ‘“‘float- ing’’ on the line. AUXILIARY EQUIPMENT Pumps—Goulds; Allis Chalmers; Nash; Worthington; Perfection, and Viking Capstans, Electric—American Engineering Gypsy, Electric—American Engineering Co. Electric Motors—G.E., Diehl; Westinghouse Steering Gears—Hyde; Waterbury; Diehl Thrust Bearings—Kingsbury Machine Works Cooling Units—Alco Products Co. Refrigeration—Baker Ice Machine Co. Heating Boiler—Kewanee; Ray Burner Winch, Electric—Lidgerwood Mfg. Co. Fire Extinguishers—Walter Kidde & &Co. Oil Purifiers—The Sharples Specialty Co. Deck Covering—Asbestolith Mfg. Co. Galley Equipment—Elisha Webb & Son Co. Marine Hardware—tThe Dayton Mfg. Co. Air Compressors—Two, Sullivan Mach. Co. Searchlights—Two, Carlisle & Finch Co. Radio Transmitting Set—Westinghouse Switchboard—General Electric Co. Tihs (a i} cre — a I (' tt if MARINE REVIEw—April, 1934