SMS Erzherzog Ferdinand Max was the lead ship of the Erzherzog Ferdinand Max class of broadside ironclads built for the Austrian Navy in the 1860s. She was built by the Stabilimento Tecnico Triestino, with her keel laying in October 1863, launching in May 1865, and commissioning in June 1866 at the outbreak of the Third Italian War of Independence and the Austro-Prussian War, fought concurrently. The ship was armed with a main battery of sixteen 48-pounder guns, though the rifled guns originally intended, which had been ordered from Prussia, had to be replaced with old smoothbore guns until after the conflicts ended.