|Born||15 February 1825|
|Died||26 April 1891 (aged 66)|
By 1863 he was chief engineer in charge of ship-building under the direction of Henri Dupuy de Lôme, and under his leadership Zédé helped design and build Gymnote, the first practicable submarine, which was launched in 1880, In 1877 Zédé had become Director of Naval Construction, but in 1880 he left to be a director of the Société Nouvelle des Forges et Chantiers de la Méditerranée, a shipyard at Toulon.
In 1880 he started planning the construction of Sirene, a larger version of the Gymnote and France's (and one of the world's) earliest commissioned naval submarines. Sirene was ordered by the French Navy in 1890, and launched in 1893. After Zédé's death she was renamed in his honour.
Gustave Zédé died in April 1891, aged 66 years.
- In 1866 Zédé was made an Officier ("Officer") of the Legion of Honour
- The French Navy has named for four ships after Zédé; two submarines and two surface ships
- There are streets named for Zédé in Paris, Brest and Lanester, in Brittany