Voisin hired contractors Paul Borel and Alexandre Lavalley in December 1863 to engineer the dredging machines that would excavate the canal from 1864 to 1869 after the administrative ruler of Egypt, Ismail, outlawed the use of corvee labor.

The authority he acquired in marine engineering issues was such that the government appointed Voisin as chairman of the French delegation to the different Navigation Congresses that met across Europe from 1886 to 1890.

He is interred at the Montmartre Cemetery with his daughter Marie-Louise Voisin, (1855-1932), his son-in-law Jean-François-Nicolas Micard, (1852-1931), Chairman of the Industrial and Agricultural Society of Pointe a Pitre since its foundation in 1907, Chairman of the Audit Committee of the Suez Canal Company in 1895, his grandson, Gaston Micard, student of the Ecole Polytechnique, and his granddaughter Mathilde Micard and her spouse Tony-Louis-Octave Smet, named honorary master of requests to the Council of State in 1903.

Mathilde was the daughter of Jacques-Léon Aronssohn, an associate professor at the University of Strasbourg and the doctor for King Louis-Philippe and Caroline Levy.

[1] In 1866, the administration of Egypt under the authority of the Ottoman Empire granted Voisin the title of Bey (Voisin-Bey).