U-Series locomotives with 16-cyl diesel introduced by General Electric, rated successively at 2400, 2500, 2800, 3000 and 3300 hp, are new units powered by 12-cyl engine; U23 was designed specifically to meet requirements of contemporary freight and switching service where high tractive effort, rather than maximum horsepower, is criterion; ore hauling on Michigan's Upper Peninsula has been assignment of first two six-motor U23 units produced.
U23, 2250-hp unit, is introduced by GE
Ry Locomotives Cars
Railway Locomotives and Cars ; 142 , n 6
1968
Article (Journal)
English
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