Le programme de construction des trois sous-marins portait sur presque dix ans et le contrat total s’élevait à environ 350 milliards GRD (1 milliard EUR), dont les trois quarts, approximativement, revenaient à HDW qui devait fournir les moteurs, les pièces de pression et des systèmes électroniques sensibles.
The three submarines were planned to be constructed over nearly 10 years and the total contract was amounting to around GRD 350 billion (EUR 1 billion), of which around three quarters would go to HDW, which was due to supply the machinery, pressure components and sensitive electronics systems.