Hercules
| Vessel type | Tug |
| Building year | 1960 |
| Identification | IMO 5044520 |
| Length | 25,35 m |
| Breadth | 7,85 m |
| Draught | 3,90 m |
| Tonnage | 161 gt, 49 nt |
| Ice class | 1 A (Finnish-Swedish) |
| Main engine | 1 x Nohab-Polar MN24S/1020 |
| Total power | 759 kw, 1020 bhp |
| Speed | 12.00 kn |