SMS Moltke was a Bismarck-class corvette built for the German Imperial Navy (Kaiserliche Marine) in the late 1870s. The ship was named after Prussian Field Marshal Helmuth von Moltke the Elder and served as training vessel for cadets and midshipmen and made numerous voyages abroad. On 28 October 1911, Moltke was renamed Acheron. A new battlecruiser had been commissioned on 30 September 1911 to carry the distinguished name Moltke in the Imperial Navy. Acheron was reclassified and converted to serve as hulk for U-boat crews at the Kiel naval base. The hulk Acheron was broken up in 1920.