In 1922, "France" was wrecked after striking an uncharted rock in Quiberon Bay at low tide and foundered with three deaths among her crew. "Jean Bart" received the first stage of her modernisation between 12 October 1923 and 29 January 1925. She underwent the second stage between 7 August 1929 and 28 September 1931. Her condition was poor, even after the earlier refits so she was demilitarised and became a training ship in Toulon in 1936. She was renamed "Océan" in 1937 to release her name for the new .