M/F Spirit of Tasmania IV
| Route | Geelong – Devonport (From 2024) |
| IMO | 9936587 |
| Building year | 2024 |
| Building yard | Rauma Marine Constructions Oy, Finland (#6009) |
| Owner | TT Line Co. Pty. Ltd. |
| Operator | TT-Line (Spirit of Tasmania) |
| Length | 212 m |
| Breadth | 31 m |
| Draft | 7 m |
| GT | 48.000 |
| Machinery | 4 * Wärtsilä 46DF |
| Speed | 26 kn. |
| Number of passengers | 1.800 |
| Number of beds | ? (301 cabins) |
| Number of cars | ? |
| Lanemetres | 2.500 |
| Port of registry | Devonport |
| Flag | Australia |
| Former names | |
| Former owners | - |
| Sister ships | Spirit of Tasmania V, |
| Notes | Delivery in August 2024. |
