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over 15,000 nautical miles without refueling if fully bunkered. The main engine operated perfect- ly during the trials. There was prac- tically no noise and no_ noticeable vibration either in the engine room or on deck with the exception of the sound made at the air intakes above the fidley which can easily be rem- edied by installing mufflers if it is considered worth while. Everyone was impressed with the simplicity of the engine which is of the 2-cycle, six cylinder, single act- ing, direct reversible, port scavenging, crosshead type. Its ease of operation and evident conservative power rat- ing was remarked upon. In power at revoltions from 90 to 95 per minute for a specified mean indicated pressure of from 85 to 90 and in fuel consump- tion it exceeded specifications. The weight of the engine as actually in- stalled was 869,000 pounds, or less by over 19 per cent than the limit speci- TABLE II Sawokla Conversion Costs $227,150 132,800 247,330 Installation Special alterations Main engine, including spares Deck machinery, including steer- ing gear, motors, control and cable Engine room auxiliaries, includ- ing engines, generators, pumps, coolers, switchboard, cable Repairs Equipment and outfit Engineering, purchasing, inspec- tion, traveling, freight, extras, « trial trip and _ incidentals 29.320 94,000 26,000 25,000 38,000 $819,600 fied. An _ illustrated description of this engine appeared in the Novem- ber 1926 MARINE REVIEW. It may be said that the main en- gine and the vessel as a whole per- formed all of its functions to the complete satisfaction of the official shipping board and Merchant Fleet representatives including Jefferson Myers, and Philip Teller, commis- sioners, W. T. Hayes, of the Fleet corporation, Capt. R. D. Gatewood, manager of maintenance and repair, and J. T. Welsh, chief of the techni- eal section. Accompanying’ illustrations were taken shortly before and during the trial. The SAWOKLA was built for the shipping board in 1920 at the Osear Daniels Co. shipyard in Tampa, Fla., as a three island, schooner rigged, single screw freighter on the Isherwood system of framing, and is 416 feet in length overall and of 9500 tons deadweight. Particulars of the converted ship, the main en- gine and auxiliaries appear in Tables 86 TABLE III Main Engine and Auxiliaries on M. S. Sawokla Main Engines Busch-Sulzer Bros. g Single acting; 2-cycle, air Make: Type: tion. Diameter of working cylinders, inches: 32. Stroke, inches: 52. Number of cylinders: 6. Brake horsepower: 3000. Revolutions per minutes: 90. Piston speed, feet per minute: 780. Two air starting tanks. Maximum ca- pacity 635 cubic feet each. Two air starting tanks. Maximum work- ing pressure 400 pounds. Cooling: Salt water throughout. Maxim silencer. Three Auxiliary Engines Make: Worthington Pump & Machinery. Type: Single acting; 2-cycle, air injec- tion. Diameter of working cylinders, 12%. Stroke, inches: 13844. Number of cylinders: 3. Brake horsepower: 115. Generator: 175-kilowatt, 240-v.; Ridgway. Cooling: Jackets, salt water; pistons, oil. Revolutions per minute: 265. Piston speed, feet per minute: 585. Excess air capacity, cubic feet each: 170. Maxim silencer. Emergency Light and Compressor Set Make: Mianus Diesel Engine Co. Type: Single acting; 2-cycle; solid injec- tion. a nds of working cylinders, 5 ys. Stroke, inches: 7%. Number of cylinders: 3. Brake horsepower: 22. Revolutions per minute: 550. Piston speed, feet per minutes: 653. Cooling: Salt water. Generator: 15-kilowatt, Diehl. Rix compressor. Maxim silencer. Pumps, Water Manufacturer: Nash Engineering Co. Salt water cooling: One 750 gallons per minute, self-priming, centrifugal, mo- tor drive, General Electric, 30 horse- power. General Service: One 750 gallons per minute, self-priming, centrifugal, motor drive, General Electric, 80 horsepower. Fire: One 200 gallons per minute, cen- trifugal, motor drive, General Electric, 20 horsepower. Engine room bilge: One 300 gallons per minute, self-priming, centrifugal, mo- tor drive, General Electric, 744 horse- power. Fresh Water: per minute, self-priming, motor drive, General Electric, 744 horse- power. Sanitary: One 70 gallons per minute, centrifugal, motor drive, General Elec- tric, 7144 horsepower. Fresh water: (portable), one 385 gallons per minute centrifugal, motor drive, General Electric, 114 horsepower. injec- inches: inches: (washing), one 70 gallons I and III while the cost of conver- gion is listed in Table II. All of the auxiliaries below and on deck are electrically driven. As in the case of the other converted ves- sels the winches have been located on raised platforms to expedite the handling of cargo. A complete de- scription of this arrangement and of the auxiliaries in general will be found in the story on the M. S. TAMPA in the December 1926 MARINE REVIEW. Accommodations in comfortable rooms have been provided for 15 pas- sengers. The crew permanently as- signed to the vessel was in charge dur- ing the trials under command of Capt. MARINE REVIEW—April, 1927 centrifugal, - Pumps Oil Manufacturer: Kinney Mfg. ~Co. Lubricating oil: One rotary plunger, 150 gallons per minute, motor drive, Gen- eral Electric 7144 horsepower. Fuel Oil Transfer: One rotary plunger, 150 gallons per minute, motor drive, General Electric, 744 horsepower. Boiler working pressure 110 173 square feet heating Vertical pounds, surface. Oil burner: izer. type, gage, Sunbeam centrifugal atom- Ice Machine York, 2-ton ,ammonia direct expansion type, direct driven by Diehl motor, 235 revolutions per minute. Propeller built up type, diameter inches, pitch 14 feet 0 Four-bladed Vi feet9 inches. Steering Control Sperry-telemotor, Westinghouse control panel—automatic, hand, with automatic follow-up, hand, non-follow-up. Winches 10 Cargo, 1 warping, Lidgerwood Mfg. Co., self-oiling, special design, electric- driven, Westinghouse motor and con- trol, improved cam-type controller. Winches fitted with Cutler-Hammer shoe brakes. Windlass Rebuilt for motor drive. Westinghouse 45- horsepower motor and control panel, Cutler-Hammer shoe brake. Fire Extinguishing System Walter Kidde COz Lux system, eighty 50-pound cylinders for C0e, 24 hand COs containers, fire main (water). Radio Equipment installed by Independent Wire- less Co. Galley Range: New York French Range Co., oil-fired, fitted with Ray burner. Coffee urn and water boiler, electric: Au- tomatic Electric -Heater Co., radiant type, specially designed, 4.5 kilowatts. Capacities: coffee, 5 gallons, water 14 gallons. Hot water heaters: Electric Heater Co., gallons. Crew, Automatic Electric 1.5 kilowatts, 15 gallons. Radiator in carpenter shop, kilowatt. Whistle visible type. Searchlight. Sperry Incandescent—1000 watts. Oil Separators Manufactured by De Laval Separator Co.: Two for fuel oil, 300 gallons per hour, of pressure type. One for lubricating oil, 150 gallons per hour, of open type. Main, Automatic 4.5 kilowatts—100 Heater Co., electric, 1 Sperry, W. H. Lee and Chief Engineer C. Carageorge. Capt. E. E. O’Donnel, vice president and general manager of C. H. Sprague & Son, Inc., Boston, was an especially interested observer, as the M. S. SAWOKLA, immediately after her trial, being assigned to his company for one trip, made preparations to begin a voyage to South America. Order Lake Freighters N. M. Paterson, head of the Pater- son Steamship lines recently ordered in England from the firm of Swan, Hunter and Wigham _ Richardson, Wallsend-On-Tyne five new lake freighters of Welland canal size.