Published: May 30, 2026
By: Adam Burns
The Atlantic Coast Line was an early pioneer in dieselization, acquiring its first diesel locomotives in 1939 and completing the transition from steam by the mid-1950s. Its diesel roster reflected a strong preference for Electro-Motive Division (EMD) products, supplemented by Alco, Baldwin, and later GE units for switching, freight, and passenger service.
Passenger service led the way. In November 1939, the ACL received two EMD E3A locomotives (Nos. 500 and 501) to power the flagship Champion streamliner. These were followed by substantial fleets of E-units: E6A/B (1940–1942), E7A/B (1945–1948), and E8A/B (1949–1950). These elegant, purple-and-silver streamlined units became icons of ACL passenger service on routes to Florida. The railroad also operated F-units in passenger and dual-service roles, including FT A/B sets (1943–1944), F2A/B (1946), F3A/B (1948), and large numbers of F7A/B (1950–1951) plus FP7s (1951–1952).
Atlantic Coast Line FP7 #885 is ahead of train #38, a Jacksonville-St. Petersburg connection for the "Havana Special" and "The Seminole", stopped at the ACL station in St. Petersburg, Florida in 1958. Howard Robins photo.Freight operations relied heavily on EMD road-switchers. The ACL purchased 185 GP7s (1950–1951, numbered 100–279 and some in the 1100 series), followed by later models like GP30s (900–908, 1963), GP35s (909–914, 1963), and GP40s (915–928, 1966). For heavier freight, it acquired SD35s (1000–1023, 1964–1965), SD45s (1024–1033, 1966), and one SDP35. Switchers included NW2s, SW7s, SW8s (50–59, 1952), and SW9s.
While EMD dominated, the ACL sampled other builders. Baldwin supplied nine VO-1000 switchers (10–18, 1942–1944), many later re-engined with EMD power. Alco provided an HH1000, dozens of S2 switchers (26–46, 1942–1944, also re-engined), and later six-axle road power in the form of eleven C628s (2000–2010, 1963–1964) and three C630s (2011–2013, 1965). In its final years before the 1967 merger with the Seaboard Air Line, the ACL added GE Universal-series locomotives, including U25Cs (3000–3020), U30Cs, and U30Bs.
The ACL’s distinctive purple-and-silver livery, introduced with the early E-units, gave way in 1957 to a simpler black scheme with yellow and silver accents under President W. Thomas Rice to reduce maintenance costs. By the early 1950s the railroad already operated over 100 diesels, growing to hundreds as steam was retired. Full dieselization brought faster schedules, lower operating costs, and improved reliability.
ACL's heavy investment in EMD power, combined with selective purchases from other builders, created a versatile fleet that served efficiently until the Seaboard Coast Line merger. Many ACL diesels continued in service under SCL and later CSX, with some preserved examples still reminding railfans of the purple-and-silver era.
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| NW2 | 20 | - | 929 | 1/1940 | Sold to W. R. Grace Chemical Company as 102. Was numbered 606 (2nd) at time of sale. |
| NW2 | 21-22, 24 | 21, 22, 24 | 1926-1928 | 8/1942, 9/1942 | ex-601 (2nd), 602 (2nd), 604 (2nd) |
| NW2 | 23, 25 (2nd) | 23, 25 | 1630-1631 | 4/1942, 5/1942 | ex-603, 605 |
| NW2 | 600 (2nd) | - | 929 | 1/1940 | Renumbered 20; built as 601. |
| NW2 | 601 (2nd) | - | 1926 | 8/1942 | ex-21; built as 611. |
| NW2 | 602 (2nd), 604 (2nd) | - | 1927, 1928 | 10/1942 | Renumbered 22,24; built as 613, 615. |
| NW2 | 601 | - | 929 | 1/1940 | Renumbered 600 (2nd). |
| NW2 | 603, 605 | - | 1630, 1631 | 5/1942 | Renumbered 23, 25 (2nd). |
| NW2 | 611, 613, 615 | - | 1926-1928 | 8/1942, 10/1942 | Renumbered 601 (2nd), 602 (2nd), 604 (2nd) |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| SW8 | 50-54 | 10-14 | 15949-15953 | 3/1952 | - |
| SW8 | 55-59 | 15-19 | 15954-15958 | 3/1952 | - |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| GP7 | 100-103 | 785-788 | 10217-10220 | 5/1950 | - |
| GP7 | 104-105 | 789-790 | 11129-11130 | 5/1950 | - |
| GP7 | 106-114 | 791-796, 700-702 | 11131-11139 | 5/1950 | - |
| GP7 | 115-116 | 703-704 | 11140-11141 | 5/50 | #116 sold to Indian Rail Road as 157. |
| GP7 | 117-122 | 705-710 | 11142-11147 | 5/1950 | - |
| GP7 | 123-128 | 711-716 | 11914-11919 | 9/1950 | - |
| GP7 | 129-132 | 717-720 | 11920-11923 | 9/1950 | - |
| GP7 | 133-135 | 721-723 | 13918-13920 | 2/1951 | - |
| GP7 | 136-140 | 724-728 | 13921-13925 | 2/1951 | - |
| GP7 | 141-142 | 729-730 | 13926-13927 | 2/1951 | - |
| GP7 | 143-147 | 731-735 | 13928-13932 | 2/1951 | - |
| GP7 | 148-152 | 736-740 | 13933-13937 | 2/1951 | - |
| GP7 | 153-154 | 741-742 | 13898-13899 | 2/1951 | Sold to the Aberdeen, Carolina & Western as 1755. |
| GP7 | 155-159 | 743-747 | 13900-13904 | 2/1951 | - |
| GP7 | 160-162 | 748-750 | 13905-13907 | 2/1951 | - |
| GP7 | 163-168 | 751-756 | 13908-13913 | 2/1951 | - |
| GP7 | 169-172 | 757-760 | 13914-13917 | 2/1951 | - |
| GP7 | 173 | 761 | 13948 | 5/1951 | - |
| GP7 | 174-176 | 762-764 | 13949-13951 | 5/1951 | - |
| GP7 | 177-186 | 797-806 | 13938-13947 | 7/1951 | - |
| GP7 | 187-192 | 807-812 | 13867-13872 | 6/1951 | - |
| GP7 | 193-194 | 813-814 | 13873-13874 | 6/1951 | - |
| GP7 | 195-196 | 815-816 | 13875-13876 | 5/1951 | - |
| GP7 | 197 | 817 | 13877 | 6/1951 | -- |
| GP7 | 198-199 | 818-819 | 13878-13879 | 6/1951 | - |
| GP7 | 200-205 | 820-825 | 13880-13885 | 6/1951 | - |
| GP7 | 206 | 826 | 13886 | 6/1951 | - |
| GP7 | 207-213, 216-217 | 827-833, 836-837 | 13887-13893, 13896-13897 | 6/1951 | - |
| GP7 | 214-215 | 834-835 | 13894-13895 | 6/1951 | - |
| GP7 | 218-220 | 838-840 | 14978-14980 | 12/1951 | - |
| GP7 | 221 | 841 | 14981 | 12/1951 | - |
| GP7 | 222-225 | 842-845 | 14982-14969 | 11/1951 | - |
| GP7 | 226-230 | 846-850 | 14970-14974 | 11/1951 | - |
| GP7 | 231, 233 | 851, 853 | 14975, 14977 | 11/1951 | - |
| GP7 | 232 | 852 | 14976 | 11/1951 | - |
| GP7 | 234, 236-238 | 765, 767-769 | 14952, 14954-14956 | 8/1951 | - |
| GP7 | 235 | 766 | 14953 | 8/1951-9/1951 | - |
| GP7 | 239-241 | 770-772 | 14957-14959 | 9/1951-10/1951 | - |
| GP7 | 242 | 773 | 14960 | 9/1951 | - |
| GP7 | 243-245 | 774-776 | 14961-14963 | 10/1951 | - |
| GP7 | 246-247 | 777-778 | 14964-14965 | 10/1951 | - |
| GP7 | 248-249 | 779-780 | 14966-14967 | 10/1951 | - |
| GP7 | 250-253 | 781-784 | 15945-15948 | 12/1951 | - |
| GP7 | 254, 256 | 854, 856 | 12897, 12899 | 10/51 | Built as Charleston & Western Carolina 200, 202. |
| GP7 | 255 | 855 | 12898 | 10/1950 | Built as Charleston & Western Carolina 201. |
| GP7 | 257-258 | 857-858 | 12900-12901 | 10/1950 | Built as Charleston & Western Carolina 203-204. |
| GP7 | 259-260 | 859-860 | 12902-12903 | 10/1950 | Built as Charleston & Western Carolina 205-206. |
| GP7 | 261, 263-264 | 861, 863-864 | 12904, 12906-12907 | 10/1950 | Built as Charleston & Western Carolina 207, 209-210. |
| GP7 | 262 | 862 | 12905 | 10/1950 | Built as Charleston & Western Carolina 208. |
| GP7 | 265, 267 | 865, 867 | 14943-14945 | 12/1951 | Built as Charleston & Western Carolina 211, 213. |
| GP7 | 266 | 866 | 14944 | 12/1951 | Built as Charleston & Western Carolina 212. |
| GP7 | 268 | 868 | 14946 | 12/1951 | Built as Charleston & Western Carolina 214. |
| GP7 | 269-273 | 869-873 | 14947-14951 | 12/1951 | Built as Charleston & Western Carolina 215-219. |
| GP7 | 274 | 874 | 15599 | 12/1951 | Built as Charleston & Western Carolina 220. |
| GP7 | 275 | 875 | 11968 | 11/1950 | ex-ACL 1100; built as Columbia, Newberry & Laurens 100. |
| GP7 | 276-277 | 876-877 | 12002-12003 | 11/1950 | ex-ACL 1101-1102; built as Columbia, Newberry & Laurens (CN&L) 101-102. |
| GP7 | 278-279 | 878-879 | 15600-15601 | 10/1951, 12/1951 | ex-ACL 1103-1104; built as CN&L 103-104. |
| GP9 | 900-908 | 1300-1308 | 27989-27997 | 1/1963 | Constructed on GP30 frames. |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| E3A | 500 (1st) | 50 | 958 | 11/1939 | Wrecked at Fleming, Georgia in 1953. |
| E8Am | 500 (2nd) | 574 | 958 (2nd) | 3/1953 | Rebuilt from E3A #500 (1st). |
| E3A | 501 | - | 959 | 11/1939 | Wrecked at Milan, North Carolina on July 24, 1943; rebuilt by EMD as an E6A. |
| E6A | 502-515 | - | 1142-1155 | 11/1940-1/1941 | - |
| E6A | 516-523 | - | 1554-1561 | 1/1942-4/1942 | - |
| E7A | 524 | - | 3185 | 3/1945 | Wrecked at Coward, South Carolina in 1962. |
| E7A | 525-528 | - | 3186-3189 | 3/1945-4/1945 | - |
| E7A | 529-531 | - | 2827-2829 | 6/1945-8/1945 | - |
| E7A | 533 | - | 3409 | 6/1946 | - |
| E7A | 534-537 | - | 3410-3412 | 6/1946 | - |
| E7A | 538-543 | - | 5677-5682 | 7/1948 | - |
| E8A | 532 (2nd) | 575 | 3408 (2nd) | 6/1946 | - |
| E8A | 544-548 | 576-579 | 9182-9186 | 1/1950 | 547 retired in 1967. |
| E8A | 549-550 (2nd) | 580-581 | 11223-11224 | 3/1950 | ex-MKT 52A, 52C; built as MKT 106A, 106C. |
| E8A | 551-552 | 582-583 | 11225-11226 | 3/50 | ex-MKT 53A, 53C; built as MKT 107A, 107C. |
| E8A | 553-554 | 584-585 | 14283, 14285 | 5/51 | ex-MKT 54A, 55A; built as MKT 131, 133. |
| E8A | 555-556 | 586-587 | 14286-14287 | 5/51 | ex-MKT 55B, 56A; built as MKT 134-135. |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| F9A | 317 | - | 23465 | 5/1957 | - |
| F3A/F3B | 336-347 / 336B-347B | 336 (1st)-347 (1st) | 5683-5694, 5908-5919 | 12/1948 | - |
| F7A | 348-371 | 348 (1st)-371 (1st) | 9191-9214 | 3/1950 | - |
| F7A | 372-383 | 372-383 | 10193-10204 | 3-4/1950 | - |
| F7A | 384-388 | 384-388 | 11909-11913 | 10/1950 | - |
| F7A | 389-391 | 389-391 | 12392-12394 | 10/1950 | - |
| F7A | 392-403 | 392-407 | 14859-14870 | 9/1951-10/1951 | - |
| F7B | 392B-403B | 392B-403B | 14886-14897 | 9/1951-10/1951 | - |
| F7A | 404-407 | 300-308, 310 | 14871-14874 | 10/1951 | - |
| F7A | 408-418 | 300-308, 310 | 14875-14885 | 11/1951 | #417 wrecked in Floral City FL - 1956 |
| F9A | 417 (2nd) | 309 | 23466 | 5/1957 | - |
| FP7 | 430-444 | 316-331 | 14844-14858 | 9/1951-10/1951 | Built as ACL 875-889. |
| FP7 | 445-448 | 332-335 | 17256-17259 | 8/1952-9/1952 | Built as ACL 890-893. |
| FP7 | 850-859 | 675-683 | 13051-13060 | 4/1951 | 855 retired. |
| FP7 | 860-869 | 684-693 | 13971-13980 | 5/1951 | -- |
| FP7 | 870-874 | 694-698 | 14839-14843 | 8/1951-9/1951 | -- |
| FP7 | 875-889 | 316-331 | 14844-14858 | 9/1951-10/1951 | Renumbered 430-444. |
| FP7 | 890-893 | 332-335 | 17256-17259 | 8/1952 | Renumbered 445-448. |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| SDP35 | 550 | 1099 | 30531 | 9/1965 | Renumbered 1099. |
| SD35 | 1000 | 1900 | 29035 | 6/1964 | Built as demonstrator 7715. |
| SD35 | 1001-1003 | 1901-1903 | 29036-29038 | 6/1964 | - |
| SD35 | 1004-1006 | 1904-1906 | 29594-29596 | 12/1964 | - |
| SD35 | 1007, 1009 | 1907, 1909 | 29597, 29599 | 12/1964 | - |
| SD35 | 1008, 1010 | 1908, 1910 | 29598, 29600 | 12/1964 | - |
| SD35 | 1011 | 1911 | 30518 | 9/1965 | - |
| SD35 | 1012-1018 | 1912-1918 | 30519-30525 | 9/1965 | - |
| SD35 | 1019-1020 | 1919-1920 | 30526-30527 | 9/1965 | - |
| SD35 | 1021-1022 | 1921-1922 | 30528-30529 | 9/1965 | - |
| SD35 | 1023 | 1923 | 30530 | 9/1965 | - |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| VO-1000 | 606-607 | 99-100 | 64266-67 | 1/1942 | Renumbered 10-11 and re-engined with a 1200 hp EMD 12-567. |
| VO-1000 | 608-609 | 101-102 | 64415, 64417 | 8/1942 | Renumbered 12-13 and re-engined with a 1200 hp EMD 12-567. |
| VO-1000 | 616-617 | 103-104 | 64667-68 | 10/1943 | Renumbered 14-15 and re-engined with a 1200 hp EMD 12-567. |
| VO-1000 | 619, 621, 623 | 105, (621 not retained), 106 | 70156, 70158, 70168 | 10/1943 | Renumbered 16-18 and re-engined with a 1200 hp EMD 12-567. |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| HH1000 | 600 | (Not retained) | 69150 | 1/1940 | Renumbered 25. |
| HH660 | 1900 | (Not retained) | 69078 | 3/1939 | Sold to Lehigh Valley as 116. |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| S2 | 602, 604 26-27 | 107, 108 | 69667-69668 | 2/1942 | Renumbered 26-27 and re-engined with a 1200 hp EMD 12-567C. |
| S2 | 610, 612, 614 | 109-111 | 69971-69973 | 2/1942, 6/1942 | Renumbered 28-30 and re-engined with a 1200 hp EMD 12-567C. |
| S2 | 618, 620, 622 | 112-114 | 70200, 72024, 72055 | 1/1944-5/1944 | Renumbered 31-33 and re-engined with a 1200 hp EMD 12-567C. |
| S2 | 34-43 | 624-642 (Evens) | 72879-72888 | 12/1944 | Renumbered 115-124 and re-engined with a 1200 hp EMD 12-567C. |
| S2 | 44 | 98 | 70256 | 8/1943 | Ex-RF&P #54, acquired in May, 1966. Re-engined with a 1200 hp EMD 12-567C and hood. |
| S2 | 45-46 | 96-97 | 72834, 72850 | 9/1944 | Ex-RF&P 45-46, acquired in May, 1966. |
| S2 | 624, 628, 630, 632, 634 | (Not retained.) | 72880-72884 | 12/44 | Renumbered 34-39. |
| S2 | 636, 638, 640 & 642 | (Not retained.) | 72887-72890 | 12/44 | Renumbered 40-43. |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| C628 | 2000-2003 | 2200-2203 | 84899-84902 | 12/1963 | - |
| C628 | 2004-2010 | 2204-2210 | 3393-01 thru 3393-07 | 12/1964 | - |
| C630 | 2011-2013 | 2211-2213 | 3408-01 thru 3408-03 | 7/1965, 12/1965 | - |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| 65DE19A | 70 | (Not retained.) | 60406 | 12/1944 | ex-Franklin & Carolina 100; built as US Army 8400. |
| 65DE19A | 71 | (Not retained.) | 60515 | 12/1944 | ex-Franklin & Carolina 110; built as US Army 8800. |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| U25C | 3000-3003 | 2100-2103 | 34969-34972 | 12/1963 | - |
| U25C | 3004-3010 | 2104-2110 | 35064-35070 | 11/1964 | - |
| U25C | 3011-3020 | 2111-2120 | 35609-35618 | 10/1965-11/1965 | - |
| U25C | 3021-3024 | 2121-2124 | 36140-36143 | 11/1965 | - |
| Model | ACL Road Number(s) | SCL Merger Number(s) | Builder Serial Number(s) | Builder Date | Notes |
|---|---|---|---|---|---|
| U30B | 975-978 | 1700-1703 | 36144-36147 | 2/1967 | - |
AC&W - Aberdeen Carolina & Western
CN&L - Columbia, Newberry & Laurens
C&WC - Charleston & Western Carolina
INRD - Indiana Railroad
LIRC - Louisville & Indiana
LV - Lehigh Valley
MKT - Missouri Kansas Texas
N&W - Norfolk & Western
NREX - National Railway Equipment
PREX - Pioneer Railway Equipment
RF&P - Richmond, Fredericksburg & Potomac
RLIX - Railink
SBD - Seaboard System
SCL - Seaboard Coast Line
USA - US Army
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