Baldwin DR-4-4-1500

The Baldwin DR-4-4-1500 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-4-4-1500
Missouri Pacific Railroad (MP) Baldwin DR-4-4-1500 "Babyface" units at Jefferson City, Missouri in 1953
Type and origin Power type Diesel-electric Builder Baldwin Locomotive Works Model DR-4-4-1500 Build date November 1947 – June 1950 Total produced 105
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Trucks AAR Type B Prime mover 608SC Engine type Four-stroke diesel Aspiration Turbocharged Generator Westinghouse 471A Traction motors Westinghouse 370F (4) Cylinders 8 Gear ratio 15:63 Couplers AAR type E knuckle
Performance figures Power output 1,500 hp (1.12 MW)
Career Operators Missouri Pacific, New York Central, Central Railroad of New Jersey, Pennsylvania Railroad, Elgin, Joliet and Eastern, Baltimore and Ohio Class PRR- BF15/BF15a, NYC- DFA-4a, CNJ- FD-43 Nicknames Babyface / Sharknose Locale North America Scrapped 1962 (B&O, NYC, MP) 1963 (CNJ) 1966 (PRR) Disposition All scrapped

Original buyers

"Babyface" units produced (1947–1948)

Railroad	Quantity A units	Quantity 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)
Totals	22	11

"Sharknose" units produced (1949–1950)

Pennsylvania Railroad DR-4-4-15 "Sharknose" units at Cincinnati, Ohio. Note the prominent side fuel fill, a signature feature.

Railroad	Quantity A units	Quantity 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,B–9707A,B were equipped with Baldwin RF-16 bodies and Westinghouse 370G generator, and are therefore referred to by some as "RF-15s." 9583B repowered with an Alco 251B V12 prime mover in December 1959, renumbered 9632B. converted to mobile power unit by Sullian Trail Colliery in 1991, scrapped in 1992.
Totals	36	36