 As second in command of the "Belle Poule" he accompanied François d'Orléans, Prince of Joinville to Saint Helena to bring back the remains of Napoleon to France in 1840 (the Retour des cendres).He was appointed "capitaine de vaisseau" (ship-of-the-line captain) in April 1841, and served in various naval commands during the remainder of the July Monarchy.In 1843 Charner was part of the fleet sent to the Pacific Ocean by the French Foreign Minister François Guizot under Admiral Jean-Baptiste Cécille with the diplomat Marie Melchior Joseph Théodore de Lagrené.