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BURGESS—Dredge—Rivers—Twin Screw—Steam DESCRIPTION The dredge BURGESS and sister vessel JApD- WIN are of the dust-pan suction head type and were built for the United States war de- partment for the dis- trict office of the Engi- neer Corps. at Memphis, Tenn. They were built for river dredging serv- ice. A powerful impel- ler type of pump is used for dredging. Name—BuURGESS Owner—United States Engineers, Memphis Builder—Marietta Mfg. Co. Naval Architect—U. S. Engineers, Memphis Launched—Noy. 25, ’33; Comp. Feb. 28, ’34 Sister Ship—Japwin;Launched, Oct. 28, ’33 Completed, Feb. 5, 1934. Classification—Owner’s requirements HULL PARTICULARS Length over all, 249 feet, 8 inches; length between perpendiculars, 244 feet; breadth mold- ed, 52 feet; depth molded, 9 feet; draft, 6 feet; displacement loaded, 1880; gross tonnage, 1052; net tonnage, 1341; bunker fuel oil capacity, in tons, 180; speed, 10 miles per hour. MACHINERY PARTICULARS Main Engines—Two, vertical, triple expansion steam engines, 12 x 20 x 33 inches by 24 inches stroke, Each engine has a rating of 1000 horse- power at 190 revolutions per minute. Built by Nordberg Mfg. Co. Each engine is direct con- nected to a propeller which operates in a par- tial tunnel, Boilers—Four, watertube marine boilers, of cross-drum type, with a total heating surface of 12,600 square feet. These boilers were built by Hedges-Walsh-Weidner. A_ total of 60,000 pounds of steam is generated per hour, at 250 pounds working pressure per square inch, and 150 degrees Fahr. superheat; fuel, oil. Super- heaters supplied by The Superheater Co.; and soot blowers by the Diamond Power Specialty Corp. Oil burning equipment by Todd Combus- tion Equipment Inc. Generating Sets—-Two, turbine driven, 25 kilowatts, supplied by General Electric Co. Dredging Pump—One, impeller type, de- signed by the U. S. Engineers, having 32-inch suction and discharge, and an 80-inch diameter impeller. Built by Hardie-Tynes; driven by a Moore mixed pressure multi-stage steam turbine, developing 1800 horsepower at 3600 r.p.m. through a Falk Corp. double reduction gear. AUXILIARY EQUIPMENT Pumps—Worthington Pump & Mach. Corp. Steam Capstans—American Engineering Co. Winches—J. S. Mundy; Clyde Iron Works Oil Purifier—The De Laval Separator Co. Steering. Engine— Marietta.-Mfg. Co. Thrust Bearings—Kingsbury Machine Works Propellers—Erie Forge Co. Safety Valves—Ashton Valve Co. Refrigeration—yYork Ice Machinery Corp. Gages—Ashton Valve Co. Wrought Iron Pipe—A. M. Byers Co. Compressor Engine—Troy Eng. Mach, Co. Galley Equipment—Elisha Webb. & Son Co. Marine Hardware—The Dayton Mfg. Co. Valves and Fittings—Crane Co. REMARKS These two dredges, of substantial steel con- struction, cost approximately $1,000,000. Hach dredge has accommodations for a crew of 60 officers and men. When using 600 feet of 32-inch diameter dis- charge pipe, these dredges are capable of mov- ing 3600 yards of material an hour. In handling water, they have a capacity of 94,000,000 gal- lons per day. Each dredge is outfitted with a complete machine and repair shop. Water dis- tilling plant, electric refrigeration, oil burning stoves, laundry, and radio apparatus are includ- ed in the equipment. MARINE REvIEw—April, 1934 23: