Thalassa is a British Virgin Island ("BVI") international business company, incorporated and registered in the BVI on 26 September 2007. The Company was established as a holding company, and currently has one operating subsidiary, Thalassa Energy Services Ltd. ("TESL") and two investment companies, Thalassa Public Investments Ltd ("TPUIL") and Thalassa Private Investments Ltd ("TPRIL"). Thalassa Holdings Ltd also has a 27% holding in Bella Media plc.
TESL was established to acquire marine seismic equipment, specifically a Portable Modular Source System ("PMSS™"). The PMSS™ is equipment which can be installed on a vessel in order to provide the seismic (sound) source to allow E&P companies to perform reservoir monitoring.
PMSS™ is used in Life of Field Seismic ("LoFS"), a process using ocean bottom cables or fibre optic networks to produce 4-D (3-D time-lapsed) seismic data to define reservoir fluid-flow.
Thalassa Holdings Ltd. listed on the Alternative Investment Market of the London Stock Exchange on 29 July 2008, with symbol "THAL".