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October, 1926 MARINE REV i EW 55 iesel-electric—the logical drive for the converted Sandmaster Once more electric power has been applied where its flexibility can be fully capitalized. The Sandmaster, operated by the Construction Materials Company for dredging and transporting construction materials, is demonstrating how well Diesel-electric drive fits the needs of a ship which, in addition to propulsion, has work to do that requires power in considerable quan- tity and applied at several points. The Sandmaster is the first Diesel-electric dredge on the Great Lakes. Her entire electrical equipment was furnished by the General Electric Company. The main machinery consists of two take power from either or both of Diesel-engine generator sets (with the main generators, can be oper- direct-connected generators for fur- ated when the propulsion motors nishing excitation, lighting, and f¢ also in operation. power for auxiliaries) and two pro- ayy of the auxiliaries are electric. Each year more ship operators pulsion motors, which arecontrolled These include the steering gear, are learning by experience the independently from either the pilot pumps, anchor windlasses, mooring economic advantages of specify- house or the engine room. The winches, suction hoists, jet pumps, ing G-E Equipment throughout. motor-driven dredge pumps, which and motor-generators for lighting. 2-10 GENERAL ELECTRIC GENERAL ELECTRIC COMPANY, SCHENECTADY, N. Y., SALES OFFICES IN PRINCIPAL NCIPAL CITIES Please mention MARINE REVIEW when writing to Advertisers