The THALASSA was formerly used as a cargo ship and was rebuilt into a represetive tall ship in 1994.
| Length | 50 m |
| Beam | 8 m |
| Draft | 3.20 m |
| Sail area | 700 |
| Day trip | 120 Personen |
| Multi-day trip | 36 Personen in 18 Doppelkabinen. |
| Equipment | 2 Salons (1 Salon an Deck, 1 Salon unter Deck). |
| Home port | Harlingen |