In 1848 he constructed his first boat using the same system, which he tested on ponds on the estate. This boat was patented  on 30 January 1855 and presented at the 1855 World's Fair in Paris (Exposition Universelle - 1855). Unfortunately, his patents went no further and were superseded by patents of Joseph Monier.
In 1848, he fashioned his initial boat with a similar technique that he tested on ponds on the estate. This craft was patented on January 30, 1855, at the 1855 World's Fair in Paris (Exposition Universelle - 1855). However, his patents were not pursued further and were outpaced by Joseph Monier's patents.