SP, T&NO & SSW RSD15 Renumbering
The below chard details the renumbering history of the SP, T&NO & SSW's fleet of 13 RSD15 units.
SP, T&NO & SSW RSD15 Renumberings:
| orig. | T&NO | 1965 | 1973 |
| SP 4816 | T&NO 250 | SP 5160 | SP 3100 |
| SP 4817 | T&NO 251 | SP 5161 | SP 3101 |
| SP 4818 | T&NO 252 | SP 5162 | SP 3102 |
| SSW 850 | SSW 5150 | ||
| SSW 851 | SSW 5151 | ||
| SSW 852 | SSW 5152 | ||
| SSW 853 | SSW 5153 | ||
| SSW 854 | SSW 5154 | ||
| SSW 855 | SSW 5155 | ||
| SSW 856 | SSW 5156 | ||
| SSW 857 | SSW 5157 | ||
| SSW 858 | SSW 5158 | ||
| SSW 859 | SSW 5159 |