Initially rated as a corvette, the Sphinx was built in Rochefort on plans by Jean-Baptiste Hubert around a low-pressure Newcomen steam engine purchased from Fawcett, in Liverpool. Indret then used this engine as its template for the locally-produced engines that powered the subsequent Sphinx-class avisos. On 25 May 1830, Sphinx sailed with a French squadron under Admiral Guy-Victor Duperré for the Invasion of Algiers. On 13 June, along with Nageur, she silenced the coastal defences of Sidi Fredj. She then carried the news of the fall of Algiers back to France.