In 1945 he launched his first trimaran , of 24 ft ( 7.3 m ) length .
In 1923 Tchetchet emigrated to New York City and further experimented with catamarans and trimarans .
In 1945 Tchetchet launched Tchetchet 's first trimaran , of 24 ft ( 7.3 m ) length .
In 1923 Tchetchet emigrated to New York City and further experimented with catamarans and trimarans .