 Jachmann was one of those studying at the school recruited into the navy; Jachmann came aboard the ship in 1844 while it was made available to the school for training purposes.During a training cruise that lasted from June to October 1845, Jachmann held one of the officer positions aboard the vessel, but he had not been officially promoted to officer rank.The cruise went into the Atlantic Ocean and into the Mediterranean Sea, and included stops in London, Genoa, Algiers, Madiera, and Portsmouth.