This fisheries research vessel was commissioned in 1996.
The primarily fisheries-based missions are :
- population ecology,
- assessment of fished species,
- study of resource distribution over time and space,
- fishery and product processing techniques.
The ship carries out other types of missions:
- physical oceanography,
- occasional deployment of the ROV Victor 6000.
The Thalassa was built at the "Manche Industrie Marine" shipyards (Dieppe) - LEROUX ET LOTZ NAVAL.