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Superheater Co., New York. The fur- nace is 9 feet 1% inches inside diame- ter with a heating surface of 2239 square feet. The ordinary tubes are 2% inches in diameter and the tubes for the superheater are 5 inches in diameter. The Washington Iron Works, Se- attle, which built the boiler, also had the contract for the propelling ma- chinery, consisting of two tandem, horizontal, compound steam engines. These engines are of the poppet valve type with reheater between the high and low pressure cylinders. The pro- pelling unit was designed especially for the unusual conditions of sery- ice. The high pressure cylinder is 17 inches in diameter, the low pres- sure is 28 inches in diameter, and the stroke is 72 inches. The engines op- erate at 16 revolutions per minute. The surface condenser and the 15 kilowatts. generator are of Westing- house make. Worthington Pump & Machinery Co. furnished the air, cir- culating, feed, fire, sanitary and steer- ing gear pumps. A York ice machine is a part of the equipment. The wa- ter filter with capacity of 7200 gal- lons per day was supplied by the Shib- ley Co., Seattle. The river water is so muddy and impregnated with vege- table matter that it is unfit either for boilers or cooking without treatment. The stern paddle wheel is 19 feet 6 inches in diameter and carries 16 floats, each 26 feet in length, of Doug- lag fir. The framing is built of iron. The wheel shaft is 15 inches diameter with a 6%-inch hole. Hydraulic and hand steering gears are installed. A horizontal duplex oil pump maintains hydraulic pressure. There are four main and two monkey rudders. All piping in excess of 2% inches was laid off by the architect and the flanges were fitted and pipes bent to shape in Seattle. Everything was so accurately done that there was no delay in assembling on the job. The derrick mast forward is equipped with a 5-ton cargo boom and double spur geared winch with drum for cargo hoist and four independent- ly operated gypsies for lining up, built by the Washingon Iron Works. The saloon and cabins are comfort- able and attractively finished. The windows are of teak trim and in the dining room mahogany pilasters add to the pleasing effect. The social hall is finished with mahogany paneling. In addition to furnishing engines and boiler, the Washington Iron Works built the stack, breeching and steer- ing gear. Isaacson Iron Works, Seat- tle, had the contract for hog chains, rudders, chocks, cleats and other deck fittings. Pacific Marine Supply Co., Seattle, supplied paint and equipment and the Seattle Plumbing Supply Co. had the contract for steam piping and valves. Diesel Towboat for Illinois, Chicago Rivers NER has been chartered by Major General T. Q. Ashburn, president of the Inland Waterways Corp. for use on the upper Illinois and Chicago rivers. The Wm. T. WARNER was built in Memphis, Tenn., this year by Capt. Russel Warner, secretary-treas- urer and general manager of the Wolf River Transportation Co., Mem- phis. The accompanying illustration shows the WARNER before she _ left Memphis on her maiden trip to Peoria, Till. ' It had been arranged to have the WARNER meet the newly built towboat Tom Sawyer (described on page 16) of the Inland Waterways Corp. at Peoria or Peru, Ill., and take from it the first “lakes to gulf” barges of the corporation and tow them into Chi- cago. This tow left New Orleans on May 31, 1933, and was scheduled to arrive in Chicago on or about June 22: T= diesel towboat, WM. T. War- Hull Is Built of Steel The WARNER has a gross tonnage of 104 and a net tonnage of 52 tons. Her length is 99 feet 6 inches, beam 17 feet 0 inch, and depth 7 feet 0 inch. The draft of hull is 5 feet 6 inches with a maximum draft of 7 feet at the rudder shoe. The hull is con- structed of steel 14-inch thick, divided by three thwartship bulkheads into four watertight compartments, while the cabin is constructed of wood. The propelling machinery consists of One 600 horsepower six-cylinder Winton, four-cycle, solid injection, ma- rine diesel engine, turning a_three- bladed 78-inch diameter, by 66-inch pitch, steel propeller at 250 revolutions per minute. The cylinder bore of the W. T.. Warner, diesel _towboat, built at Mem- phis, Tenn., this year. Chartered for upper Illi- nois and Chi- cago river serv- ice main engine is 15% inches and stroke is 22 inches. The fuel oil consump- tion is approximately 31 gallons per hour. A Kingsbury thrust bearing is pro- vided. Forced feed lubrication is used throughout the main engine. There is one air compressor on the main engine, along with three aux-° iliary air compressors. Six air stor- age tanks are provided, also one Win- ton 10 kilowatt light engine, one Delco light plant, ten fuel oil tanks (10,600 gallons total capacity), two fresh wa- ter storage tanks for drinking and cooking water only, (180 gallons ca- pacity), and water storage tank in fore peak for main engine cooling water. Deck guards are 42 inches wide and a steel coaming 14 inches high extends above the main deck, preventing wave- wash from entering the boat. Can Lower Pilot House An interesting feature of the boat is the pilot house which, by means of a hydraulic ram, can be raised or lowered vertically. When the pilot house is in its raised position, it has a clearance of approximately 19 feet 6 inches above the water line, and when lowered into its pit the pilot house roof is 13 feet 6 inches above MARINE REVIEW—July, 1933 the water line. This low height is required: because of the low vertical clearance afforded by the numerous bridges in the Chicago district, while when the pilot house is raised the pilot is able to see over the tops of the barges being pushed by the towboat while on the open river. The quarters consist of five state- rooms, dining room, galley, two toi- lets, wash room and a shower bath. The galley range operates with fuel oil. One 14 cubic feet Frigidaire re- frigerator is located in the galley: Accommodations are provided for a crew of 14 men. Five staterooms are available for passengers. One 16 Westinghouse aerial beacon incandescent searchlight is installed on the pilot house and four flood lights are provided, two on upper deck along- side pilot house and two on after end of cabin. The deck equipment consists of one gasoline driven capstan, one towing bitt, four towing straps, four cavels on both port and starboard sides, two towing cavels on bow, two towing knees on bow, and two hand operated capstans on stern. There are three all-stee] rudders, one steering and two backing, operated by a Gardner steer- ing gear equipped with oil brakes. 21