Argonaute (S636) is an Aréthuse-class submarine, and the fourth ship of the French Navy to bear the name. Launched on 23 October 1958, she served as flagship within the Toulon submarine squadron, and spent over 2,000 days at sea and over 32,000 hours underwater. She was decommissioned on 31 July 1982. The Argonaute opened to the public in 1991, outside the Cité des sciences et de l'industrie, 30 Avenue Corentin Cariou, in the 19th arrondissement of Paris. The interior is open daily except Mondays and national holidays; an admission fee is charged.