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16 MARINE REVIEW Diesel-Electric Drive in STEEL ELECTRICIAN Three Engines—Each 320 B. H. P. Engine Name of Engine—Nelseco 4-MI-22; Year—1926 Builder—The New London Ship & Engine Co. Cycle—4; No. of Cylinders—4; I. H. P.—400 B. H. P.—320; Action—Single | Injection — Mechanical; Piston Cooling — None Bore—15 in.; Stroke—22 in.; R. P. M.—225 Piston Speed—825 ft. p. m.; Press. Ind.—90.5 Pressure Brake—72.5; B. H. P. Per Cyl.—80 I. H. P. Per Cyl.—100; Mechanical Eff.—80% Stroke to Bore—1.47; Wkg. Strokes Per Rev.—2 Leth. O. A.—13 ft. 4in.; Hght. O. A.—10 ft. 4% in. Width Over All—4 ft. 2 in. Weight—One engine, 55,550 lbs. ine. flywheel Reversing—Non-reversing; Air Comp.—Non fitted DESCRIPTION Three engines of this size and type, each direct-connected to a generator, were in- stalled in the STEEL ELECTRICIAN. The en- gine operates on the four-stroke cycle with mechanical injection and has four single- acting cylinders work- ing on the full diesel principle. A compact, fully accessible unit, it is rigid without excess weight, simple in oper- ation and _ easy to maintain. Vessel Name — Steel Electrician, Builder — Federal Shipbuilding & Dry Dock Co. Type—Special lake freighter ‘Main Drive—Diesel electric Length B.P.P.—250 ft.; Beam—42 ft. 9 in. Depth—20 ft.; Draft—14 ft.; No. Propellers—One Fuel Consumption—Lbs. per B.H.P. per hr.—40 Lbs. per I. H. P. per hr.—.828; Tons per day—4 Generators—Three of 205 kilowatts each at 220 r.p.m.; Built by Westinghouse Electric & Mfg. Co.; Each genetator is driven by a diesel engine of size and type illustrated and described above. Other Standard Sizes of Engines Built Single Action Height Approx. i-HoP. B. H. P. R. P.M. No. Cyl. Length O. A. Above Shaft Width Weight 188/209 150/175 260/280 4-cycle 3 8 ft. 5% in. 6 ft. 91% in. 6 ft. 7 in. 19,600 250/294 200/235 260/280 4-cycle 4 10 ft. 414 in. 6 ft. 9% in. 6 ft. 7 in. 24,500 375/437 300/350 260/280 4-cycle 6 14 ft. 2% in. 6 ft. 9% in. Getta ctv ine 36,500 281/331 225/265 225/250 4-cycle 3 10 ft. 1048 in. 8 ft. 41% in. 4° ft. 8 in. 32,700 875/844 300/355 225/250 4-cycle 4 18 ft. 348 in. 8 ft. 4% in. 4 ft. 8 in. 42,000 562/670 450/535 225/250 4-cycle 6 18 ft. 148 in. 8 ft. 4% ft. 4 ft. 8 in. 68,200 Also Double Acting with Attached Scavenging Pumps, from 2040 B.H.P. to 5520 B.H. P. Steel Electrician—Single Screw—Three 320 B. H. P. Engines each connected to a generator November, 1926 RA. Se eee Ln ay aoe eee eee Stal, aie ath ea SB E a