- Ships
- Oil and Gas
- Harbour facilities
- Renewable energies
- Multisector engineering expertise consultancy




French Navy : DGA, CTSN
Main Shipyards for war ships and large ships: DCNS, STX, CMN, CNIM, OCEA
Other shipyards: PIRIOU (fish ships)…
Ship owners : GDF SUEZ, TOTAL SHIPPING, CMA-CGM, BOURBON
Engineering industries and suppliers : WARTSILA, CONVERTEAM, SAIPEM, BE MAURIC, GTT, ACERGY…
Administrative and other institutions: Ville de PARIS, IFREMER, …
Sample of projects Principia worked for:
Cruise and Ferries : Queen Mary 2, Renaissance, Millenium, MSC Musica, MSC Magnifica, NGV Corsaire, …
Fish and specific ships : Senneur Piriou, Pourquoi-Pas, LCAT, EDA-R Catamaran, ...
War ships : Charles de Gaulle aircraft carrier, Sawari, Delta, Horizon, Fremm, BPC, M51, CETACE, Vigilant, Scorpène, Barracuda
Far-east: Drill-ships, pipe installation vessels, …