These engines were ahead of their time, and surpassed by no other. It is not exactly known how many of them were built, but as of today 20 are still in existence.

In 1929, Ricardo SORIANO and Paul BONNEMAISON developed the

                              A True Marvel of Nautical Engineering

  Courtesy:   Bo Eklund,  M. Kerboeuf,  H.J. Pechdimaldjian,  G. Romani