Baldwin DR-4-4-15

The Baldwin DR-4-4-15 was a 1,500-horsepower (1,100 kW) cab unit-type diesel locomotive built for freight service by the Baldwin Locomotive Works between November 1947 and June 1950. It was produced in two different body types, nicknamed the "Babyface" and "Sharknose" styles by railfans, though Baldwin used the same model number for both. 22 "Babyface" cab-equipped A units were built, along with 11 cabless booster B units; 36 "Sharknose" A units and 36 B units were constructed, making a total for all models of 105 locomotives built.

Baldwin DR-4-4-15
Missouri Pacific Railroad (MP) Baldwin DR-4-4-15 "Babyface" units at Jefferson City, Missouri in 1953. MP and NYC units were constructed three feet longer than the earlier CNJ units, though the wheelbase of all units was the same. Despite some references stating the units had steam generators, there is no evidence of this.[1]
Type and origin
Power typeDiesel-electric
BuilderBaldwin Locomotive Works
Build dateNovember 1947 – June 1950
Total produced105
Gauge4 ft 8 12 in (1,435 mm) standard gauge
Prime mover608SC
Engine typeFour-stroke diesel
Performance figures
Power output1,500 hp (1.12 MW)
NicknamesBabyface / Sharknose
LocaleNorth America
DispositionAll scrapped

Original buyers

"Babyface" units produced (19471948)

Railroad Quantity
A units
B units
Road numbers A units Road numbers B units Notes
Central Railroad of New Jersey 10 5 70–79 K, L, M, R, S
Missouri Pacific Railroad 8 4 201–208 201B–204B
New York Central Railroad 4 2 3400–3403 3700–3701 Renumbered 3800–3803 (A)

"Sharknose" units produced (19491950)

Railroad Quantity
A units
B units
Road numbers A units Road numbers B units Notes
Baldwin Locomotive Works (demonstrators) 2 2 6001A, 6001A1 6001B, 6001B1 to Elgin, Joliet and Eastern Railroad #700A/#701A (A) #700B/#701B (B), then to Baltimore and Ohio Railroad 847, 849 (A) 847X, 849X (B), later 4200–4201 (A), 5200–5201 (B)
Pennsylvania Railroad 34 34 9568A–9593A, 9700A–9707A 9568B–9593B, 9700B–9707B 9700A,B9707A,B were equipped with Baldwin RF-16 bodies, and are therefore referred to by some as "RF-15s."


  1. MOPAC Yahoo group, 29 September 2013 "MoPac Baldwin DR4-4-15's" thread
  • Hayden, Bob, ed. (1980). Model Railroader Cyclopedia-Volume 2: Diesel Locomotives. Kalmbach Books. ISBN 0-89024-547-9.
  • Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Kalmbach Publishing Co., Milwaukee, WI. ISBN 0-89024-026-4.
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