| Class | Max No. of class | Currently |
| 1969 - NSW 442/2200 Class (Diesel-Electric) | 1 | 1 |
| 2010 - XRN Class (Diesel-Electric) | 30 | 30 |
| 2011 - GWA/ORN Class (Diesel-Electric) | 4 | 4 |
| 2012 - GWU Class (Diesel-Electric) | 11 | 11 |
| Class | Max No. of class | Currently |
| 2012 - GWN Class (Diesel-Electric) | 5 | 5 |