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SEK (Sidirodromoi Ellinikou Kratous, Hellenic State Railways) Class Θγ (or Class Thg; Theta-gamma) was a class of 2-8-0 steam locomotives ex-United States Army Transportation CorpsS160 type. 27 locomotives were acquired in 1947; Θγ521–537 were coal burners, while Θγ551–560 were oil burners. In 1959, Italian Railways (Ferrovie dello Stato, FS) sold another 25, formerly Class 736, Nos 736.011/23/40/55/73/90/101/2/126/7/131/5/51/8/60/4/6/78/88/90/9/203/7/9/17 to SEK. These were renumbered Θγ571-95 in the same order.
Stock list
SEK stock list
SEK No.
Former USATC No.
Former FS No.
Builder
Date Built
Works No.
Θγ521
2050
-
ALCo
1943
70532
Θγ522
2112
-
ALCo
1943
70594
Θγ523
2127
-
ALCo
1943
70609
Θγ524
2154
-
Lima
1943
8160
Θγ525
2206
-
Lima
1943
8212
Θγ526
2428
-
ALCo
1943
70777
Θγ527
2443
-
ALCo
1943
70792
Θγ528
2229
-
Lima
1943
8235
Θγ529
2456
-
ALCo
1943
70805
Θγ530
2573
-
Lima
1943
8275
Θγ531
3398
-
Baldwin
1944
70355
Θγ532
3524
-
Baldwin
1944
70481
Θγ533
1781
-
Baldwin
1942
67615
Θγ534
2166
-
Lima
1943
8172
Θγ535
2226
-
Lima
1943
8232
Θγ536
2365
-
Baldwin
1943
69622
Θγ537
2537
-
Lima
1943
8354
Θγ551
3338
-
ALCo
1944
71593
Θγ552
3352
-
ALCo
1944
71607
Θγ553
3364
-
ALCo
1944
71619
Θγ554
3374
-
ALCo
1944
71629
Θγ555
3375
-
ALCo
1944
71630
Θγ556
3327
-
ALCo
1944
71582
Θγ557
3347
-
ALCo
1944
71602
Θγ558
3357
-
ALCo
1944
71612
Θγ559
3360
-
ALCo
1944
71615
Θγ560
3372
-
ALCo
1944
71627
Θγ571
1740
736.011
Baldwin
1942
67574
Θγ572
1785
736.023
Baldwin
1942
67619
Θγ573
2070
736.040
ALCo
1943
70552
Θγ574
2746
736.055
Baldwin
1943
70009
Θγ575
3278
736.073
ALCo
1944
71533
Θγ576
3299
736.090
ALCo
1944
71554
Θγ577
3310
736.101
ALCo
1944
71565
Θγ578
3311
736.102
ALCo
1944
71566
Θγ579
3348
736.126
ALCo
1944
71603
Θγ580
3350
736.127
ALCo
1944
71605
Θγ581
3383
736.131
Baldwin
1944
70340
Θγ582
3387
736.135
Baldwin
1944
70344
Θγ583
3413
736.151
Baldwin
1944
70370
Θγ584
3420
736.158
Baldwin
1944
70377
Θγ585
3422
736.160
Baldwin
1944
70379
Θγ586
3426
736.164
Baldwin
1944
70383
Θγ587
3428
736.166
Baldwin
1944
70385
Θγ588
3622
736.178
Lima
1944
8535
Θγ589
3666
736.188
Lima
1944
8579
Θγ590
3668
736.190
Lima
1944
8581
Θγ591
3690
736.199
Lima
1944
8603
Θγ592
3694
736.203
Lima
1944
8607
Θγ593
3698
736.207
Lima
1944
8611
Θγ594
4418
736.209
ALCo
1945
73410
Θγ595
5740
736.217
Lima
1944
8678
A few still survive in scrapyard condition. Four are at Thessaloniki Old Depot (Θγ 525, 532, 535, 584), one is outside Thessaloniki current depot (Θγ 593) whilst one more survives at Tithorea depot (Θγ 576). Θγ 575 is under overhaul at the Churnet Valley Railway in Great Britain.