M/S Rotna
| Route | - |
| IMO | ? |
| Building year | 1940 |
| Building yard | Burmeister & Wain, København, Denmark (#655) |
| Owner | A/S Dampskibsselsskabet på Bornholm af 1866 |
| Operator | - |
| Length | 84,7 m |
| Breadth | 12,3 m |
| Draft | 4,3 m |
| GT | 1.836 |
| Machinery | B&W 750-VF-90 |
| Speed | 15 kn. |
| Number of passengers | 900 |
| Number of beds | 231 |
| Number of cars | 20-25 |
| Lanemetres | 0 |
| Port of registry | Rønne |
| Flag | Denmark |
| Former names | Rotna (1965-1970) - A/S Dampskibsselsskabet på Bornholm af 1866 Hammershus (1964-1965) - A/S Dampskibsselsskabet på Bornholm af 1866 Rotna (1940-1964) - A/S Dampskibsselsskabet på Bornholm af 1866 |
| Former owners | - |
| Sister ships | - |
| Notes | Sold in 1969 to scrapping. Sink in 1970. |
- M/S Rotna
Photo: Bert Smit´s collection