SSW 900A-920D
The SSW operated the only examples of FT's on the entire system. The first three sets delivered in mid 1944 were setup as two pairs of locos to each set with a pair consisting of an A and a B unit connected with a drawbar. The drawbars were removed fairly early separating them into individual units. The two sets delivered in mid 1945 were built without drawbars, but still numbered with alpha suffixes until the enire SSW FT fleet was renumbered without the alpha suffixes in April 1949.
SSW FT's:
| 4/1949 number | Original number | model |
| SSW 901 | SSW 900A | FT-A |
| SSW 902 | SSW 900B | FT-B |
| SSW 903 | SSW 900D | FT-A |
| SSW 904 | SSW 900C | FT-B |
| SSW 906 | SSW 905B | FT-B |
| SSW 907 | SSW 905A | FT-A |
| SSW 908 | SSW 905C | FT-B |
| SSW 909 | SSW 905D | FT-A |
| SSW 911 | SSW 910A | FT-A |
| SSW 912 | SSW 910B | FT-B |
| SSW 913 | SSW 910D | FT-A |
| SSW 914 | SSW 910C | FT-B |
| SSW 916 | SSW 915B | FT-B |
| SSW 917 | SSW 915A | FT-A |
| SSW 918 | SSW 915C | FT-B |
| SSW 919 | SSW 915D | FT-A |
| SSW 921 | SSW 920A | FT-A |
| SSW 922 | SSW 920B | FT-B |
| SSW 923 | SSW 920D | FT-A |
| SSW 924 | SSW 920C | FT-B |