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34 MARINE REVIEW Oil Engine Direct Drive in Yacht Winona One Engine—120 B.H. P. Engine Name of Engine—Bolinder; Year 1925 Builder—J. & C. G. Bolinders Co., Ltd. American Distributors—Bolinders Co. Inc. Cycle—Two; No. of Cylinders—4; B. H. P.—120 Action—Single; Injection—Solid Scavenging—Crankcase; Piston Cooling—None Bore—9% in.; Stroke—9t% in.; R. P. M.—475 Pressure Indicated—42.5; Pressure Brake—35 B. H. P. per Cyl.—30; Mechanical Eff.—75% Stroke to Bore—1.04; Wkg. Strokes per Rev.—4 Leth. O. A.—11 ft. 2 in.; Hght. O. A.—5 ft. 16 in. Width Over All—3 ft. 4%4 in. Weight—One engine, 9600 lbs; One engine, 80 Ibs, per’ 5... ‘P: Reversing—Direct reversible (pre-ignition) Air Compressor—None (auxiliary) Starting—Electric ignition device DESCRIPTION One engine of this size and type was in- stalled in the yacht WINONA. The engine operates on the two- stroke cycle with solid injection. Electric ig- nition is used only in starting. The high temperature in the ig- nition bulb gasifies the injected fuel oil which with the compressed air in the cylinder forms an_ explosive mixture and_ ignites. Vessel Name—Winona, ex Maraya, ex Bostonian Type—Full powered yacht (wood) Main Drive—Direct marine oil engine Length— B. P. P.—89 ft.; Beam—13 ft. 6 in. Draft—4 ft. 6 in.; Speed—10 knots No. of Propellers—-One Fuel Consumption—Lbs. per B. H. P. per hr.—0.60 Remarks The yacht WINONA was built in 1906 by the New York Yacht, Launch & Engine Co. and was originally equipped with a gasoline engine. This engine was removed and the 120 horsepower Bolinder engine described was installed in 1925. The WINONA is used by A. C. Shumway of Lima, Peru, agent for the Ford Motor Co., in visiting the various ports on the coast of Peru where he maintains sales branches. Some of the Larger Sizes of Engines Built B. H. PP. R. P.M. Cycle No. Cyls. L. O. A. Heht. above shaft O. A. Width Weight November, 1926 180 400 2-cycle 14 ft. ‘ 240 3875 2-cycle 15 ft. in. 300 300 2-cycle aris a He in. 400 275 2-cycle 19 ft. in. 600 200 2-cycle 24 ft. in. 5 ft. 8 in. 4 ft. lve in. 5 ft. 71% in. 4 ft. 5% in. 6 ft. 6% in. 5 ft. 1% in. 7 ft. 41% in. 6 ft. 554 in. 10 ft. 6 in. 8 ft. 1043 in. 20,000 23,500 35,500 47,500 113,000 Yacht WINONA with one 120 brake horsepower Bolinder engine