Casabianca was a nuclear attack submarine of the French Navy. Laid down in 1981, she was launched in 1984 and commissioned in 1987. She was withdrawn from service in September 2023.

Unlike her five sister ships, Casabianca was not named after a precious stone; she was named after the of the Second World War.

The boat was the third in the . Between 1993 and June 1994, the boat undertook a major refitting which upgraded the boat to the level of Améthyste, arming the latter for anti-submarine as well as anti-surface ship warfare.

See also

  • Luc-Julien-Joseph Casabianca
  • List of submarines of France

Notes and references